./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/peterson.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/peterson.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-atomic/peterson.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/peterson.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 20:32:49,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:32:49,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:32:49,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:32:49,769 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:32:49,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:32:49,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:32:49,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:32:49,796 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:32:49,799 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:32:49,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:32:49,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:32:49,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:32:49,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:32:49,801 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:32:49,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:32:49,802 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:32:49,802 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:32:49,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:32:49,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:32:49,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:32:49,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:32:49,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:32:49,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:32:49,804 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:32:49,804 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:32:49,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:32:49,804 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:32:49,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:32:49,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:32:49,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:32:49,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:32:49,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:32:49,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:32:49,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:32:49,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:32:49,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:32:49,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:32:49,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:32:49,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:32:49,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:32:49,808 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:32:49,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:32:49,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:32:50,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:32:50,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:32:50,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:32:50,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:32:50,059 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:32:50,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2024-06-03 20:32:51,070 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:32:51,271 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:32:51,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2024-06-03 20:32:51,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfb7847f/593887a0401c4bde8d5ef34890b8df68/FLAG0753eb009 [2024-06-03 20:32:51,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dfb7847f/593887a0401c4bde8d5ef34890b8df68 [2024-06-03 20:32:51,300 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:32:51,300 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:32:51,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/peterson.yml/witness.yml [2024-06-03 20:32:51,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:32:51,410 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:32:51,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:32:51,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:32:51,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:32:51,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:32:51" (1/2) ... [2024-06-03 20:32:51,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ed7bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:32:51, skipping insertion in model container [2024-06-03 20:32:51,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:32:51" (1/2) ... [2024-06-03 20:32:51,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bfa2215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:32:51, skipping insertion in model container [2024-06-03 20:32:51,420 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:51" (2/2) ... [2024-06-03 20:32:51,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ed7bf0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51, skipping insertion in model container [2024-06-03 20:32:51,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:51" (2/2) ... [2024-06-03 20:32:51,421 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:32:51,452 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:32:51,454 INFO L97 edCorrectnessWitness]: Location invariant before [L762-L762] (((((! multithreaded || ((0 <= turn && turn <= 1) && (turn == 0 || turn == 1))) && (! multithreaded || ((0 <= flag2 && flag2 <= 1) && (flag2 == 0 || flag2 == 1)))) && (! multithreaded || ((((((((1LL - (long long )flag1) + (long long )flag2 >= 0LL && (1LL - (long long )flag1) + (long long )turn >= 0LL) && (long long )flag1 + (long long )flag2 >= 0LL) && (long long )flag1 + (long long )turn >= 0LL) && (long long )flag2 + (long long )turn >= 0LL) && (1LL + (long long )flag1) - (long long )turn >= 0LL) && (1LL + (long long )flag2) - (long long )turn >= 0LL) && (2LL - (long long )flag1) - (long long )turn >= 0LL))) && (! multithreaded || ((0 <= flag1 && flag1 <= 1) && (flag1 == 0 || flag1 == 1)))) && (! multithreaded || ((((((((0 <= flag1 && 0 <= flag2) && 0 <= turn) && flag1 <= 1) && flag2 <= 1) && turn <= 1) && (flag1 == 0 || flag1 == 1)) && (flag2 == 0 || flag2 == 1)) && (turn == 0 || turn == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) [2024-06-03 20:32:51,454 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((((! multithreaded || ((0 <= turn && turn <= 1) && (turn == 0 || turn == 1))) && (! multithreaded || ((0 <= flag2 && flag2 <= 1) && (flag2 == 0 || flag2 == 1)))) && (! multithreaded || ((((((((1LL - (long long )flag1) + (long long )flag2 >= 0LL && (1LL - (long long )flag1) + (long long )turn >= 0LL) && (long long )flag1 + (long long )flag2 >= 0LL) && (long long )flag1 + (long long )turn >= 0LL) && (long long )flag2 + (long long )turn >= 0LL) && (1LL + (long long )flag1) - (long long )turn >= 0LL) && (1LL + (long long )flag2) - (long long )turn >= 0LL) && (2LL - (long long )flag1) - (long long )turn >= 0LL))) && (! multithreaded || ((0 <= flag1 && flag1 <= 1) && (flag1 == 0 || flag1 == 1)))) && (! multithreaded || ((((((((0 <= flag1 && 0 <= flag2) && 0 <= turn) && flag1 <= 1) && flag2 <= 1) && turn <= 1) && (flag1 == 0 || flag1 == 1)) && (flag2 == 0 || flag2 == 1)) && (turn == 0 || turn == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) [2024-06-03 20:32:51,478 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:32:51,479 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-03 20:32:51,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:32:51,775 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:32:51,787 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:32:51,868 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:32:51,903 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:32:51,904 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51 WrapperNode [2024-06-03 20:32:51,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:32:51,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:32:51,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:32:51,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:32:51,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:51,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:51,951 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 103 [2024-06-03 20:32:51,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:32:51,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:32:51,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:32:51,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:32:51,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:51,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:51,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:51,991 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]. [2024-06-03 20:32:51,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:51,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:52,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:52,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:52,015 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:52,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:52,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:32:52,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:32:52,023 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:32:52,023 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:32:52,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (1/1) ... [2024-06-03 20:32:52,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:32:52,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:32:52,051 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) [2024-06-03 20:32:52,069 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 [2024-06-03 20:32:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-06-03 20:32:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-06-03 20:32:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-06-03 20:32:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-06-03 20:32:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 20:32:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:32:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:32:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 20:32:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:32:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:32:52,086 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:32:52,170 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:32:52,172 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:32:52,339 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:32:52,339 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:32:52,394 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:32:52,394 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-03 20:32:52,394 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:32:52 BoogieIcfgContainer [2024-06-03 20:32:52,395 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:32:52,396 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:32:52,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:32:52,399 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:32:52,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:32:51" (1/4) ... [2024-06-03 20:32:52,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c13d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:32:52, skipping insertion in model container [2024-06-03 20:32:52,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:32:51" (2/4) ... [2024-06-03 20:32:52,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c13d09 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:32:52, skipping insertion in model container [2024-06-03 20:32:52,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:32:51" (3/4) ... [2024-06-03 20:32:52,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c13d09 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:32:52, skipping insertion in model container [2024-06-03 20:32:52,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:32:52" (4/4) ... [2024-06-03 20:32:52,403 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2024-06-03 20:32:52,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:32:52,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:32:52,417 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:32:52,461 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 20:32:52,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 38 transitions, 90 flow [2024-06-03 20:32:52,517 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-06-03 20:32:52,518 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 20:32:52,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 2/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-06-03 20:32:52,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 38 transitions, 90 flow [2024-06-03 20:32:52,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 34 transitions, 77 flow [2024-06-03 20:32:52,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:32:52,546 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;@2851b42f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:32:52,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:32:52,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:32:52,549 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 20:32:52,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:32:52,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:52,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:32:52,551 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)] === [2024-06-03 20:32:52,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2026818422, now seen corresponding path program 1 times [2024-06-03 20:32:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:52,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267429700] [2024-06-03 20:32:52,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:52,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:52,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267429700] [2024-06-03 20:32:52,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267429700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:52,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:52,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:32:52,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778592460] [2024-06-03 20:32:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:52,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:32:52,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:32:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:32:53,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 38 [2024-06-03 20:32:53,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:53,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:53,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 38 [2024-06-03 20:32:53,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:53,126 INFO L124 PetriNetUnfolderBase]: 105/278 cut-off events. [2024-06-03 20:32:53,126 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-06-03 20:32:53,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 278 events. 105/278 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1295 event pairs, 50 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 441. Up to 168 conditions per place. [2024-06-03 20:32:53,130 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 21 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-06-03 20:32:53,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 140 flow [2024-06-03 20:32:53,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:32:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:32:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-03 20:32:53,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-03 20:32:53,139 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 77 flow. Second operand 3 states and 80 transitions. [2024-06-03 20:32:53,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 140 flow [2024-06-03 20:32:53,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 20:32:53,143 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 93 flow [2024-06-03 20:32:53,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-06-03 20:32:53,147 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-06-03 20:32:53,147 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 93 flow [2024-06-03 20:32:53,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:53,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:53,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:53,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:32:53,148 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)] === [2024-06-03 20:32:53,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:53,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2143230211, now seen corresponding path program 1 times [2024-06-03 20:32:53,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:53,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728178042] [2024-06-03 20:32:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:53,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:53,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:53,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728178042] [2024-06-03 20:32:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728178042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:53,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:32:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042039968] [2024-06-03 20:32:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:53,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:32:53,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:53,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:32:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:32:53,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-03 20:32:53,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2024-06-03 20:32:53,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:53,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-03 20:32:53,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:53,393 INFO L124 PetriNetUnfolderBase]: 121/291 cut-off events. [2024-06-03 20:32:53,393 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-06-03 20:32:53,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 291 events. 121/291 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1338 event pairs, 52 based on Foata normal form. 2/273 useless extension candidates. Maximal degree in co-relation 449. Up to 191 conditions per place. [2024-06-03 20:32:53,397 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/46 dead transitions. [2024-06-03 20:32:53,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 181 flow [2024-06-03 20:32:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:32:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:32:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-03 20:32:53,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6644736842105263 [2024-06-03 20:32:53,401 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 93 flow. Second operand 4 states and 101 transitions. [2024-06-03 20:32:53,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 181 flow [2024-06-03 20:32:53,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:32:53,404 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 117 flow [2024-06-03 20:32:53,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-06-03 20:32:53,405 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-03 20:32:53,405 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 117 flow [2024-06-03 20:32:53,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2024-06-03 20:32:53,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:53,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:53,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:32:53,406 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:32:53,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash 2015628212, now seen corresponding path program 1 times [2024-06-03 20:32:53,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:53,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299510447] [2024-06-03 20:32:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:53,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:53,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:53,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299510447] [2024-06-03 20:32:53,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299510447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:53,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:53,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:32:53,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324585932] [2024-06-03 20:32:53,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:32:53,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:32:53,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:32:53,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-06-03 20:32:53,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:53,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:53,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-06-03 20:32:53,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:53,699 INFO L124 PetriNetUnfolderBase]: 143/322 cut-off events. [2024-06-03 20:32:53,699 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-06-03 20:32:53,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 322 events. 143/322 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1470 event pairs, 51 based on Foata normal form. 4/314 useless extension candidates. Maximal degree in co-relation 537. Up to 185 conditions per place. [2024-06-03 20:32:53,702 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 31 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-03 20:32:53,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 238 flow [2024-06-03 20:32:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:32:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:32:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-03 20:32:53,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-03 20:32:53,707 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 117 flow. Second operand 5 states and 120 transitions. [2024-06-03 20:32:53,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 238 flow [2024-06-03 20:32:53,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 229 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:53,710 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 141 flow [2024-06-03 20:32:53,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-03 20:32:53,711 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2024-06-03 20:32:53,711 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 141 flow [2024-06-03 20:32:53,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:53,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:53,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:53,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:32:53,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:32:53,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash 88010942, now seen corresponding path program 1 times [2024-06-03 20:32:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806344642] [2024-06-03 20:32:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:53,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:53,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806344642] [2024-06-03 20:32:53,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806344642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:53,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:53,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:32:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470584658] [2024-06-03 20:32:53,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:53,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:32:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:32:53,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:32:53,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-03 20:32:53,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:53,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:53,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-03 20:32:53,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:53,893 INFO L124 PetriNetUnfolderBase]: 125/295 cut-off events. [2024-06-03 20:32:53,894 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-06-03 20:32:53,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 295 events. 125/295 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1320 event pairs, 46 based on Foata normal form. 1/284 useless extension candidates. Maximal degree in co-relation 580. Up to 200 conditions per place. [2024-06-03 20:32:53,896 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 26 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-06-03 20:32:53,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 221 flow [2024-06-03 20:32:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:32:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:32:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-06-03 20:32:53,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6381578947368421 [2024-06-03 20:32:53,899 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 141 flow. Second operand 4 states and 97 transitions. [2024-06-03 20:32:53,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 221 flow [2024-06-03 20:32:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 209 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:53,901 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 154 flow [2024-06-03 20:32:53,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-03 20:32:53,903 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2024-06-03 20:32:53,903 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 154 flow [2024-06-03 20:32:53,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:53,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:53,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:53,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:32:53,904 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)] === [2024-06-03 20:32:53,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:53,905 INFO L85 PathProgramCache]: Analyzing trace with hash -967459819, now seen corresponding path program 1 times [2024-06-03 20:32:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664182376] [2024-06-03 20:32:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664182376] [2024-06-03 20:32:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664182376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:54,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:54,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:32:54,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785245899] [2024-06-03 20:32:54,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:54,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:32:54,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:54,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:32:54,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:32:54,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-06-03 20:32:54,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:54,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:54,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-06-03 20:32:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:54,107 INFO L124 PetriNetUnfolderBase]: 143/317 cut-off events. [2024-06-03 20:32:54,107 INFO L125 PetriNetUnfolderBase]: For 370/385 co-relation queries the response was YES. [2024-06-03 20:32:54,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 317 events. 143/317 cut-off events. For 370/385 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1372 event pairs, 54 based on Foata normal form. 3/308 useless extension candidates. Maximal degree in co-relation 678. Up to 220 conditions per place. [2024-06-03 20:32:54,109 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 32 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-03 20:32:54,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 56 transitions, 286 flow [2024-06-03 20:32:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:32:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:32:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-03 20:32:54,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6263157894736842 [2024-06-03 20:32:54,110 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 154 flow. Second operand 5 states and 119 transitions. [2024-06-03 20:32:54,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 56 transitions, 286 flow [2024-06-03 20:32:54,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 277 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:54,112 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 190 flow [2024-06-03 20:32:54,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-06-03 20:32:54,113 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 11 predicate places. [2024-06-03 20:32:54,113 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 190 flow [2024-06-03 20:32:54,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:54,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:54,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:54,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:32:54,114 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)] === [2024-06-03 20:32:54,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1213753405, now seen corresponding path program 2 times [2024-06-03 20:32:54,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:54,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026197328] [2024-06-03 20:32:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:54,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:54,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026197328] [2024-06-03 20:32:54,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026197328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:54,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:54,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:32:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384428933] [2024-06-03 20:32:54,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:54,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:32:54,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:32:54,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:32:54,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2024-06-03 20:32:54,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:54,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:54,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2024-06-03 20:32:54,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:54,298 INFO L124 PetriNetUnfolderBase]: 142/321 cut-off events. [2024-06-03 20:32:54,298 INFO L125 PetriNetUnfolderBase]: For 555/568 co-relation queries the response was YES. [2024-06-03 20:32:54,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 321 events. 142/321 cut-off events. For 555/568 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1419 event pairs, 57 based on Foata normal form. 7/318 useless extension candidates. Maximal degree in co-relation 587. Up to 218 conditions per place. [2024-06-03 20:32:54,300 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 28 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2024-06-03 20:32:54,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 280 flow [2024-06-03 20:32:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:32:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:32:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-03 20:32:54,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-03 20:32:54,302 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 190 flow. Second operand 5 states and 115 transitions. [2024-06-03 20:32:54,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 280 flow [2024-06-03 20:32:54,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 270 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-03 20:32:54,304 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 205 flow [2024-06-03 20:32:54,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-03 20:32:54,305 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 15 predicate places. [2024-06-03 20:32:54,305 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 205 flow [2024-06-03 20:32:54,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:54,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:54,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:54,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:32:54,306 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:32:54,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1757601737, now seen corresponding path program 1 times [2024-06-03 20:32:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:54,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390217626] [2024-06-03 20:32:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:54,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390217626] [2024-06-03 20:32:54,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390217626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:54,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:54,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:54,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734868092] [2024-06-03 20:32:54,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:54,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:54,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:54,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:54,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:54,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:54,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:54,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:54,520 INFO L124 PetriNetUnfolderBase]: 195/457 cut-off events. [2024-06-03 20:32:54,521 INFO L125 PetriNetUnfolderBase]: For 900/914 co-relation queries the response was YES. [2024-06-03 20:32:54,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 457 events. 195/457 cut-off events. For 900/914 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2230 event pairs, 26 based on Foata normal form. 10/462 useless extension candidates. Maximal degree in co-relation 865. Up to 134 conditions per place. [2024-06-03 20:32:54,524 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 48 selfloop transitions, 12 changer transitions 2/75 dead transitions. [2024-06-03 20:32:54,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 439 flow [2024-06-03 20:32:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-03 20:32:54,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-03 20:32:54,525 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 205 flow. Second operand 6 states and 144 transitions. [2024-06-03 20:32:54,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 439 flow [2024-06-03 20:32:54,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 412 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 20:32:54,528 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 235 flow [2024-06-03 20:32:54,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-03 20:32:54,529 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2024-06-03 20:32:54,529 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 235 flow [2024-06-03 20:32:54,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:54,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:54,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:54,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:32:54,530 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)] === [2024-06-03 20:32:54,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:54,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1026875080, now seen corresponding path program 1 times [2024-06-03 20:32:54,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:54,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379000044] [2024-06-03 20:32:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:54,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:54,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:54,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379000044] [2024-06-03 20:32:54,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379000044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:54,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:54,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:54,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97807592] [2024-06-03 20:32:54,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:54,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:54,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:54,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:54,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:54,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:54,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:54,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:54,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:54,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:54,777 INFO L124 PetriNetUnfolderBase]: 241/548 cut-off events. [2024-06-03 20:32:54,777 INFO L125 PetriNetUnfolderBase]: For 1492/1511 co-relation queries the response was YES. [2024-06-03 20:32:54,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646 conditions, 548 events. 241/548 cut-off events. For 1492/1511 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2768 event pairs, 54 based on Foata normal form. 14/554 useless extension candidates. Maximal degree in co-relation 1213. Up to 178 conditions per place. [2024-06-03 20:32:54,781 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 43 selfloop transitions, 22 changer transitions 1/79 dead transitions. [2024-06-03 20:32:54,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 511 flow [2024-06-03 20:32:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-03 20:32:54,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-03 20:32:54,783 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 235 flow. Second operand 6 states and 144 transitions. [2024-06-03 20:32:54,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 511 flow [2024-06-03 20:32:54,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 501 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-03 20:32:54,786 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 356 flow [2024-06-03 20:32:54,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-06-03 20:32:54,787 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 26 predicate places. [2024-06-03 20:32:54,787 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 356 flow [2024-06-03 20:32:54,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:54,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:54,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:54,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:32:54,788 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)] === [2024-06-03 20:32:54,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1964784294, now seen corresponding path program 2 times [2024-06-03 20:32:54,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:54,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442590726] [2024-06-03 20:32:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:54,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:54,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:54,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442590726] [2024-06-03 20:32:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442590726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:54,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:54,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:54,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77063773] [2024-06-03 20:32:54,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:54,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:54,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:54,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:54,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:54,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:54,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:54,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:54,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:54,999 INFO L124 PetriNetUnfolderBase]: 271/624 cut-off events. [2024-06-03 20:32:55,000 INFO L125 PetriNetUnfolderBase]: For 2385/2412 co-relation queries the response was YES. [2024-06-03 20:32:55,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 624 events. 271/624 cut-off events. For 2385/2412 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3324 event pairs, 59 based on Foata normal form. 20/632 useless extension candidates. Maximal degree in co-relation 1609. Up to 185 conditions per place. [2024-06-03 20:32:55,005 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 44 selfloop transitions, 24 changer transitions 1/82 dead transitions. [2024-06-03 20:32:55,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 640 flow [2024-06-03 20:32:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:55,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-03 20:32:55,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-03 20:32:55,006 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 356 flow. Second operand 6 states and 142 transitions. [2024-06-03 20:32:55,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 640 flow [2024-06-03 20:32:55,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 626 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-03 20:32:55,011 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 439 flow [2024-06-03 20:32:55,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=439, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-03 20:32:55,012 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2024-06-03 20:32:55,012 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 439 flow [2024-06-03 20:32:55,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:55,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:55,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:55,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:32:55,013 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)] === [2024-06-03 20:32:55,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:55,014 INFO L85 PathProgramCache]: Analyzing trace with hash -192236666, now seen corresponding path program 3 times [2024-06-03 20:32:55,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:55,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618478905] [2024-06-03 20:32:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:55,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:55,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:55,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:55,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618478905] [2024-06-03 20:32:55,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618478905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:55,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:55,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:55,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940103785] [2024-06-03 20:32:55,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:55,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:55,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:55,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:55,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:55,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:55,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:55,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:55,225 INFO L124 PetriNetUnfolderBase]: 265/619 cut-off events. [2024-06-03 20:32:55,225 INFO L125 PetriNetUnfolderBase]: For 2930/2959 co-relation queries the response was YES. [2024-06-03 20:32:55,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 619 events. 265/619 cut-off events. For 2930/2959 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3280 event pairs, 46 based on Foata normal form. 12/623 useless extension candidates. Maximal degree in co-relation 1502. Up to 160 conditions per place. [2024-06-03 20:32:55,230 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 44 selfloop transitions, 21 changer transitions 2/80 dead transitions. [2024-06-03 20:32:55,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 80 transitions, 675 flow [2024-06-03 20:32:55,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:55,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-03 20:32:55,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-06-03 20:32:55,232 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 439 flow. Second operand 6 states and 141 transitions. [2024-06-03 20:32:55,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 80 transitions, 675 flow [2024-06-03 20:32:55,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 643 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:55,237 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 455 flow [2024-06-03 20:32:55,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2024-06-03 20:32:55,238 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2024-06-03 20:32:55,238 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 455 flow [2024-06-03 20:32:55,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:55,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:55,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:55,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 20:32:55,239 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)] === [2024-06-03 20:32:55,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1075714408, now seen corresponding path program 1 times [2024-06-03 20:32:55,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:55,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899730712] [2024-06-03 20:32:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:55,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:55,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899730712] [2024-06-03 20:32:55,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899730712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:55,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:55,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:55,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275314622] [2024-06-03 20:32:55,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:55,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:55,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:55,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:55,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:55,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:55,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:55,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:55,497 INFO L124 PetriNetUnfolderBase]: 259/606 cut-off events. [2024-06-03 20:32:55,497 INFO L125 PetriNetUnfolderBase]: For 3100/3123 co-relation queries the response was YES. [2024-06-03 20:32:55,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 606 events. 259/606 cut-off events. For 3100/3123 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3214 event pairs, 59 based on Foata normal form. 18/616 useless extension candidates. Maximal degree in co-relation 1616. Up to 182 conditions per place. [2024-06-03 20:32:55,502 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 42 selfloop transitions, 26 changer transitions 1/82 dead transitions. [2024-06-03 20:32:55,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 699 flow [2024-06-03 20:32:55,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-03 20:32:55,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618421052631579 [2024-06-03 20:32:55,504 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 455 flow. Second operand 6 states and 141 transitions. [2024-06-03 20:32:55,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 699 flow [2024-06-03 20:32:55,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 646 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-03 20:32:55,511 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 494 flow [2024-06-03 20:32:55,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=494, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-03 20:32:55,511 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2024-06-03 20:32:55,511 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 494 flow [2024-06-03 20:32:55,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:55,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:55,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:55,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 20:32:55,512 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)] === [2024-06-03 20:32:55,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:55,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1664368100, now seen corresponding path program 2 times [2024-06-03 20:32:55,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:55,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275214014] [2024-06-03 20:32:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:55,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:55,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:55,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275214014] [2024-06-03 20:32:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275214014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:55,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:55,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:55,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046155005] [2024-06-03 20:32:55,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:55,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:55,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:55,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:55,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:55,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:55,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:55,740 INFO L124 PetriNetUnfolderBase]: 260/612 cut-off events. [2024-06-03 20:32:55,741 INFO L125 PetriNetUnfolderBase]: For 3536/3557 co-relation queries the response was YES. [2024-06-03 20:32:55,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 612 events. 260/612 cut-off events. For 3536/3557 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3211 event pairs, 54 based on Foata normal form. 10/618 useless extension candidates. Maximal degree in co-relation 1567. Up to 160 conditions per place. [2024-06-03 20:32:55,745 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 45 selfloop transitions, 23 changer transitions 2/83 dead transitions. [2024-06-03 20:32:55,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 747 flow [2024-06-03 20:32:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:55,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-03 20:32:55,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-06-03 20:32:55,746 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 494 flow. Second operand 6 states and 140 transitions. [2024-06-03 20:32:55,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 747 flow [2024-06-03 20:32:55,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 83 transitions, 679 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:32:55,753 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 520 flow [2024-06-03 20:32:55,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=520, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-03 20:32:55,754 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2024-06-03 20:32:55,754 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 520 flow [2024-06-03 20:32:55,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:55,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:55,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:55,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 20:32:55,755 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)] === [2024-06-03 20:32:55,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash -590652925, now seen corresponding path program 1 times [2024-06-03 20:32:55,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:55,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183773087] [2024-06-03 20:32:55,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:55,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:55,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183773087] [2024-06-03 20:32:55,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183773087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:55,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:55,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:55,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856497391] [2024-06-03 20:32:55,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:55,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:55,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:55,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 520 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:55,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:55,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:55,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:55,993 INFO L124 PetriNetUnfolderBase]: 285/681 cut-off events. [2024-06-03 20:32:55,993 INFO L125 PetriNetUnfolderBase]: For 4345/4364 co-relation queries the response was YES. [2024-06-03 20:32:55,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 681 events. 285/681 cut-off events. For 4345/4364 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3858 event pairs, 83 based on Foata normal form. 11/688 useless extension candidates. Maximal degree in co-relation 1904. Up to 213 conditions per place. [2024-06-03 20:32:55,998 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 56 selfloop transitions, 21 changer transitions 2/92 dead transitions. [2024-06-03 20:32:55,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 92 transitions, 837 flow [2024-06-03 20:32:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-03 20:32:55,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-03 20:32:56,000 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 520 flow. Second operand 6 states and 138 transitions. [2024-06-03 20:32:56,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 92 transitions, 837 flow [2024-06-03 20:32:56,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 788 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 20:32:56,006 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 577 flow [2024-06-03 20:32:56,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=577, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-03 20:32:56,007 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 45 predicate places. [2024-06-03 20:32:56,007 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 577 flow [2024-06-03 20:32:56,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 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) [2024-06-03 20:32:56,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:56,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:56,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 20:32:56,008 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)] === [2024-06-03 20:32:56,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash 968445057, now seen corresponding path program 1 times [2024-06-03 20:32:56,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:56,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163072146] [2024-06-03 20:32:56,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:56,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163072146] [2024-06-03 20:32:56,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163072146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:56,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:32:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367514221] [2024-06-03 20:32:56,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:56,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:56,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:56,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:56,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:56,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:56,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:56,231 INFO L124 PetriNetUnfolderBase]: 306/735 cut-off events. [2024-06-03 20:32:56,231 INFO L125 PetriNetUnfolderBase]: For 5523/5543 co-relation queries the response was YES. [2024-06-03 20:32:56,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2731 conditions, 735 events. 306/735 cut-off events. For 5523/5543 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4258 event pairs, 39 based on Foata normal form. 16/744 useless extension candidates. Maximal degree in co-relation 2543. Up to 211 conditions per place. [2024-06-03 20:32:56,236 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 62 selfloop transitions, 22 changer transitions 2/99 dead transitions. [2024-06-03 20:32:56,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 99 transitions, 914 flow [2024-06-03 20:32:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-03 20:32:56,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-03 20:32:56,238 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 577 flow. Second operand 6 states and 142 transitions. [2024-06-03 20:32:56,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 99 transitions, 914 flow [2024-06-03 20:32:56,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 99 transitions, 883 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-03 20:32:56,246 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 659 flow [2024-06-03 20:32:56,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=659, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-03 20:32:56,247 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 53 predicate places. [2024-06-03 20:32:56,247 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 659 flow [2024-06-03 20:32:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:56,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:56,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:56,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 20:32:56,248 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)] === [2024-06-03 20:32:56,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash -207594140, now seen corresponding path program 1 times [2024-06-03 20:32:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:56,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445617385] [2024-06-03 20:32:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:56,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445617385] [2024-06-03 20:32:56,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445617385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:56,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:32:56,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015652107] [2024-06-03 20:32:56,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:56,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:56,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:56,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:56,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-03 20:32:56,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 659 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:56,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:56,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-03 20:32:56,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:56,557 INFO L124 PetriNetUnfolderBase]: 521/1095 cut-off events. [2024-06-03 20:32:56,557 INFO L125 PetriNetUnfolderBase]: For 5825/5831 co-relation queries the response was YES. [2024-06-03 20:32:56,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3832 conditions, 1095 events. 521/1095 cut-off events. For 5825/5831 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6468 event pairs, 153 based on Foata normal form. 34/1105 useless extension candidates. Maximal degree in co-relation 3275. Up to 357 conditions per place. [2024-06-03 20:32:56,564 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 63 selfloop transitions, 41 changer transitions 4/125 dead transitions. [2024-06-03 20:32:56,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 125 transitions, 1076 flow [2024-06-03 20:32:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:32:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:32:56,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 217 transitions. [2024-06-03 20:32:56,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5710526315789474 [2024-06-03 20:32:56,565 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 659 flow. Second operand 10 states and 217 transitions. [2024-06-03 20:32:56,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 125 transitions, 1076 flow [2024-06-03 20:32:56,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 125 transitions, 996 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 20:32:56,577 INFO L231 Difference]: Finished difference. Result has 105 places, 92 transitions, 869 flow [2024-06-03 20:32:56,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=869, PETRI_PLACES=105, PETRI_TRANSITIONS=92} [2024-06-03 20:32:56,578 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2024-06-03 20:32:56,578 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 92 transitions, 869 flow [2024-06-03 20:32:56,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:56,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:56,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:56,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 20:32:56,579 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)] === [2024-06-03 20:32:56,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash -273088864, now seen corresponding path program 2 times [2024-06-03 20:32:56,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:56,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539037921] [2024-06-03 20:32:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:56,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:56,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539037921] [2024-06-03 20:32:56,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539037921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:56,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:56,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616250662] [2024-06-03 20:32:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:56,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:56,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:56,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:56,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 92 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:56,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:56,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:56,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:56,831 INFO L124 PetriNetUnfolderBase]: 380/910 cut-off events. [2024-06-03 20:32:56,831 INFO L125 PetriNetUnfolderBase]: For 8827/8861 co-relation queries the response was YES. [2024-06-03 20:32:56,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 910 events. 380/910 cut-off events. For 8827/8861 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5658 event pairs, 103 based on Foata normal form. 9/904 useless extension candidates. Maximal degree in co-relation 3267. Up to 258 conditions per place. [2024-06-03 20:32:56,839 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 57 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-03 20:32:56,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 111 transitions, 1246 flow [2024-06-03 20:32:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-03 20:32:56,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-03 20:32:56,841 INFO L175 Difference]: Start difference. First operand has 105 places, 92 transitions, 869 flow. Second operand 6 states and 134 transitions. [2024-06-03 20:32:56,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 111 transitions, 1246 flow [2024-06-03 20:32:56,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 111 transitions, 1246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-03 20:32:56,856 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 989 flow [2024-06-03 20:32:56,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=989, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-03 20:32:56,857 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2024-06-03 20:32:56,857 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 989 flow [2024-06-03 20:32:56,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:56,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:56,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 20:32:56,858 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)] === [2024-06-03 20:32:56,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:56,858 INFO L85 PathProgramCache]: Analyzing trace with hash -681728894, now seen corresponding path program 3 times [2024-06-03 20:32:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:56,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312589364] [2024-06-03 20:32:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:56,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:56,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:56,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312589364] [2024-06-03 20:32:56,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312589364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:56,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:56,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:56,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624298495] [2024-06-03 20:32:56,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:56,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:56,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:56,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:56,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 989 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:56,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:56,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:56,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:57,091 INFO L124 PetriNetUnfolderBase]: 378/907 cut-off events. [2024-06-03 20:32:57,091 INFO L125 PetriNetUnfolderBase]: For 9944/9978 co-relation queries the response was YES. [2024-06-03 20:32:57,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4253 conditions, 907 events. 378/907 cut-off events. For 9944/9978 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5658 event pairs, 98 based on Foata normal form. 5/897 useless extension candidates. Maximal degree in co-relation 3430. Up to 257 conditions per place. [2024-06-03 20:32:57,099 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 56 selfloop transitions, 34 changer transitions 0/112 dead transitions. [2024-06-03 20:32:57,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 1334 flow [2024-06-03 20:32:57,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:57,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-03 20:32:57,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-03 20:32:57,100 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 989 flow. Second operand 6 states and 134 transitions. [2024-06-03 20:32:57,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 1334 flow [2024-06-03 20:32:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 1290 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:57,119 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 1056 flow [2024-06-03 20:32:57,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1056, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-03 20:32:57,120 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-06-03 20:32:57,120 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 1056 flow [2024-06-03 20:32:57,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:57,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:57,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:57,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 20:32:57,120 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)] === [2024-06-03 20:32:57,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1380998671, now seen corresponding path program 1 times [2024-06-03 20:32:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:57,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001691793] [2024-06-03 20:32:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:57,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:57,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:57,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001691793] [2024-06-03 20:32:57,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001691793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:57,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:57,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:57,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325402413] [2024-06-03 20:32:57,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:57,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:57,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:57,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:57,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:57,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:57,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 1056 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:57,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:57,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:57,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:57,384 INFO L124 PetriNetUnfolderBase]: 374/892 cut-off events. [2024-06-03 20:32:57,384 INFO L125 PetriNetUnfolderBase]: For 11645/11691 co-relation queries the response was YES. [2024-06-03 20:32:57,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4333 conditions, 892 events. 374/892 cut-off events. For 11645/11691 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5485 event pairs, 80 based on Foata normal form. 14/883 useless extension candidates. Maximal degree in co-relation 3742. Up to 255 conditions per place. [2024-06-03 20:32:57,392 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 69 selfloop transitions, 37 changer transitions 0/128 dead transitions. [2024-06-03 20:32:57,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 128 transitions, 1507 flow [2024-06-03 20:32:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-03 20:32:57,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6491228070175439 [2024-06-03 20:32:57,394 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 1056 flow. Second operand 6 states and 148 transitions. [2024-06-03 20:32:57,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 128 transitions, 1507 flow [2024-06-03 20:32:57,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 128 transitions, 1460 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:57,414 INFO L231 Difference]: Finished difference. Result has 122 places, 104 transitions, 1214 flow [2024-06-03 20:32:57,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1214, PETRI_PLACES=122, PETRI_TRANSITIONS=104} [2024-06-03 20:32:57,414 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 83 predicate places. [2024-06-03 20:32:57,415 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 104 transitions, 1214 flow [2024-06-03 20:32:57,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:57,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:57,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:57,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 20:32:57,415 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)] === [2024-06-03 20:32:57,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 956332567, now seen corresponding path program 2 times [2024-06-03 20:32:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:57,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346343042] [2024-06-03 20:32:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:57,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:57,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:57,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346343042] [2024-06-03 20:32:57,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346343042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:57,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:57,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:57,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228547811] [2024-06-03 20:32:57,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:57,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:57,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:57,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:57,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:57,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:57,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 104 transitions, 1214 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:57,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:57,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:57,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:57,676 INFO L124 PetriNetUnfolderBase]: 379/895 cut-off events. [2024-06-03 20:32:57,676 INFO L125 PetriNetUnfolderBase]: For 13571/13627 co-relation queries the response was YES. [2024-06-03 20:32:57,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4635 conditions, 895 events. 379/895 cut-off events. For 13571/13627 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5502 event pairs, 85 based on Foata normal form. 18/888 useless extension candidates. Maximal degree in co-relation 4059. Up to 261 conditions per place. [2024-06-03 20:32:57,684 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 71 selfloop transitions, 33 changer transitions 0/126 dead transitions. [2024-06-03 20:32:57,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 1585 flow [2024-06-03 20:32:57,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-03 20:32:57,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2024-06-03 20:32:57,686 INFO L175 Difference]: Start difference. First operand has 122 places, 104 transitions, 1214 flow. Second operand 6 states and 142 transitions. [2024-06-03 20:32:57,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 1585 flow [2024-06-03 20:32:57,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1499 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-03 20:32:57,710 INFO L231 Difference]: Finished difference. Result has 125 places, 107 transitions, 1254 flow [2024-06-03 20:32:57,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1254, PETRI_PLACES=125, PETRI_TRANSITIONS=107} [2024-06-03 20:32:57,711 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2024-06-03 20:32:57,711 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 107 transitions, 1254 flow [2024-06-03 20:32:57,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:57,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:57,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 20:32:57,712 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)] === [2024-06-03 20:32:57,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1515985425, now seen corresponding path program 3 times [2024-06-03 20:32:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:57,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207820801] [2024-06-03 20:32:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:57,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:57,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207820801] [2024-06-03 20:32:57,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207820801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:57,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:57,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:32:57,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403074899] [2024-06-03 20:32:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:57,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:57,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:57,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-03 20:32:57,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 107 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:57,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:57,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-03 20:32:57,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:57,975 INFO L124 PetriNetUnfolderBase]: 503/1121 cut-off events. [2024-06-03 20:32:57,976 INFO L125 PetriNetUnfolderBase]: For 12479/12503 co-relation queries the response was YES. [2024-06-03 20:32:57,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 1121 events. 503/1121 cut-off events. For 12479/12503 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7098 event pairs, 106 based on Foata normal form. 7/1071 useless extension candidates. Maximal degree in co-relation 5020. Up to 414 conditions per place. [2024-06-03 20:32:57,985 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 68 selfloop transitions, 40 changer transitions 0/148 dead transitions. [2024-06-03 20:32:57,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 148 transitions, 1678 flow [2024-06-03 20:32:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:32:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:32:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-03 20:32:57,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888157894736842 [2024-06-03 20:32:57,987 INFO L175 Difference]: Start difference. First operand has 125 places, 107 transitions, 1254 flow. Second operand 8 states and 179 transitions. [2024-06-03 20:32:57,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 148 transitions, 1678 flow [2024-06-03 20:32:58,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 148 transitions, 1620 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:58,015 INFO L231 Difference]: Finished difference. Result has 134 places, 122 transitions, 1434 flow [2024-06-03 20:32:58,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1434, PETRI_PLACES=134, PETRI_TRANSITIONS=122} [2024-06-03 20:32:58,015 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 95 predicate places. [2024-06-03 20:32:58,016 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 122 transitions, 1434 flow [2024-06-03 20:32:58,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:58,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:58,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:58,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 20:32:58,016 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)] === [2024-06-03 20:32:58,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:58,017 INFO L85 PathProgramCache]: Analyzing trace with hash 975585973, now seen corresponding path program 4 times [2024-06-03 20:32:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:58,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987833983] [2024-06-03 20:32:58,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:58,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:58,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:58,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:58,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987833983] [2024-06-03 20:32:58,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987833983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:58,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:58,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:58,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141228690] [2024-06-03 20:32:58,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:58,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:58,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:58,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:58,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 122 transitions, 1434 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:58,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:58,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:58,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:58,278 INFO L124 PetriNetUnfolderBase]: 423/1003 cut-off events. [2024-06-03 20:32:58,278 INFO L125 PetriNetUnfolderBase]: For 15134/15188 co-relation queries the response was YES. [2024-06-03 20:32:58,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5273 conditions, 1003 events. 423/1003 cut-off events. For 15134/15188 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6397 event pairs, 131 based on Foata normal form. 10/987 useless extension candidates. Maximal degree in co-relation 4875. Up to 339 conditions per place. [2024-06-03 20:32:58,287 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 70 selfloop transitions, 34 changer transitions 0/135 dead transitions. [2024-06-03 20:32:58,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 1717 flow [2024-06-03 20:32:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-03 20:32:58,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-03 20:32:58,288 INFO L175 Difference]: Start difference. First operand has 134 places, 122 transitions, 1434 flow. Second operand 6 states and 134 transitions. [2024-06-03 20:32:58,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 1717 flow [2024-06-03 20:32:58,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 135 transitions, 1717 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-03 20:32:58,317 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 1532 flow [2024-06-03 20:32:58,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1532, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2024-06-03 20:32:58,318 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 102 predicate places. [2024-06-03 20:32:58,318 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 1532 flow [2024-06-03 20:32:58,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:58,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:58,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:58,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 20:32:58,318 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)] === [2024-06-03 20:32:58,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash -356997899, now seen corresponding path program 5 times [2024-06-03 20:32:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:58,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564958974] [2024-06-03 20:32:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:58,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:58,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:58,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564958974] [2024-06-03 20:32:58,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564958974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:58,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:58,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:32:58,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292011755] [2024-06-03 20:32:58,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:58,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:58,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:58,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:58,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:58,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-03 20:32:58,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 1532 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:58,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:58,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-03 20:32:58,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:58,592 INFO L124 PetriNetUnfolderBase]: 436/1020 cut-off events. [2024-06-03 20:32:58,592 INFO L125 PetriNetUnfolderBase]: For 9602/9615 co-relation queries the response was YES. [2024-06-03 20:32:58,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 1020 events. 436/1020 cut-off events. For 9602/9615 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6424 event pairs, 112 based on Foata normal form. 27/1028 useless extension candidates. Maximal degree in co-relation 4303. Up to 245 conditions per place. [2024-06-03 20:32:58,600 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 71 selfloop transitions, 45 changer transitions 0/150 dead transitions. [2024-06-03 20:32:58,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 150 transitions, 1823 flow [2024-06-03 20:32:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:32:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:32:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-03 20:32:58,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2024-06-03 20:32:58,601 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 1532 flow. Second operand 10 states and 208 transitions. [2024-06-03 20:32:58,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 150 transitions, 1823 flow [2024-06-03 20:32:58,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 150 transitions, 1711 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-03 20:32:58,632 INFO L231 Difference]: Finished difference. Result has 152 places, 124 transitions, 1557 flow [2024-06-03 20:32:58,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1557, PETRI_PLACES=152, PETRI_TRANSITIONS=124} [2024-06-03 20:32:58,632 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 113 predicate places. [2024-06-03 20:32:58,632 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 124 transitions, 1557 flow [2024-06-03 20:32:58,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:58,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:58,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:58,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 20:32:58,633 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)] === [2024-06-03 20:32:58,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:58,634 INFO L85 PathProgramCache]: Analyzing trace with hash 746207533, now seen corresponding path program 1 times [2024-06-03 20:32:58,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:58,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197345048] [2024-06-03 20:32:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:58,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:58,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:58,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197345048] [2024-06-03 20:32:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197345048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:58,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:58,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:58,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329916267] [2024-06-03 20:32:58,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:58,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:58,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:58,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:58,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:58,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 124 transitions, 1557 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:58,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:58,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:58,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:58,867 INFO L124 PetriNetUnfolderBase]: 362/931 cut-off events. [2024-06-03 20:32:58,868 INFO L125 PetriNetUnfolderBase]: For 13695/13735 co-relation queries the response was YES. [2024-06-03 20:32:58,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4926 conditions, 931 events. 362/931 cut-off events. For 13695/13735 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6120 event pairs, 122 based on Foata normal form. 14/930 useless extension candidates. Maximal degree in co-relation 4505. Up to 271 conditions per place. [2024-06-03 20:32:58,875 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 66 selfloop transitions, 33 changer transitions 0/137 dead transitions. [2024-06-03 20:32:58,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 137 transitions, 1853 flow [2024-06-03 20:32:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-03 20:32:58,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-03 20:32:58,876 INFO L175 Difference]: Start difference. First operand has 152 places, 124 transitions, 1557 flow. Second operand 6 states and 130 transitions. [2024-06-03 20:32:58,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 137 transitions, 1853 flow [2024-06-03 20:32:58,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 137 transitions, 1796 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:58,911 INFO L231 Difference]: Finished difference. Result has 156 places, 127 transitions, 1608 flow [2024-06-03 20:32:58,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1608, PETRI_PLACES=156, PETRI_TRANSITIONS=127} [2024-06-03 20:32:58,912 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 117 predicate places. [2024-06-03 20:32:58,912 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 127 transitions, 1608 flow [2024-06-03 20:32:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:58,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:58,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:58,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 20:32:58,913 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)] === [2024-06-03 20:32:58,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash 955594087, now seen corresponding path program 2 times [2024-06-03 20:32:58,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:58,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786922096] [2024-06-03 20:32:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:58,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:58,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:58,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786922096] [2024-06-03 20:32:58,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786922096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:58,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:58,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:58,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186186692] [2024-06-03 20:32:58,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:58,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:58,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:58,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:58,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:59,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:59,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 127 transitions, 1608 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:59,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:59,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:59,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:59,160 INFO L124 PetriNetUnfolderBase]: 368/938 cut-off events. [2024-06-03 20:32:59,160 INFO L125 PetriNetUnfolderBase]: For 14679/14727 co-relation queries the response was YES. [2024-06-03 20:32:59,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 938 events. 368/938 cut-off events. For 14679/14727 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6124 event pairs, 121 based on Foata normal form. 15/933 useless extension candidates. Maximal degree in co-relation 4627. Up to 272 conditions per place. [2024-06-03 20:32:59,168 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 61 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-06-03 20:32:59,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 138 transitions, 1945 flow [2024-06-03 20:32:59,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-03 20:32:59,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-06-03 20:32:59,170 INFO L175 Difference]: Start difference. First operand has 156 places, 127 transitions, 1608 flow. Second operand 6 states and 131 transitions. [2024-06-03 20:32:59,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 138 transitions, 1945 flow [2024-06-03 20:32:59,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 138 transitions, 1896 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 20:32:59,209 INFO L231 Difference]: Finished difference. Result has 159 places, 130 transitions, 1676 flow [2024-06-03 20:32:59,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1676, PETRI_PLACES=159, PETRI_TRANSITIONS=130} [2024-06-03 20:32:59,210 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 120 predicate places. [2024-06-03 20:32:59,210 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 130 transitions, 1676 flow [2024-06-03 20:32:59,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:59,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:59,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:59,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 20:32:59,211 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)] === [2024-06-03 20:32:59,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1814789151, now seen corresponding path program 3 times [2024-06-03 20:32:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:59,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379122211] [2024-06-03 20:32:59,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:59,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:59,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:59,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379122211] [2024-06-03 20:32:59,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379122211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:59,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:59,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:32:59,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481352263] [2024-06-03 20:32:59,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:59,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-03 20:32:59,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 130 transitions, 1676 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:59,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:59,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-03 20:32:59,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:59,457 INFO L124 PetriNetUnfolderBase]: 526/1175 cut-off events. [2024-06-03 20:32:59,457 INFO L125 PetriNetUnfolderBase]: For 12850/12879 co-relation queries the response was YES. [2024-06-03 20:32:59,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5844 conditions, 1175 events. 526/1175 cut-off events. For 12850/12879 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7478 event pairs, 124 based on Foata normal form. 10/1159 useless extension candidates. Maximal degree in co-relation 5569. Up to 439 conditions per place. [2024-06-03 20:32:59,466 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 73 selfloop transitions, 51 changer transitions 0/170 dead transitions. [2024-06-03 20:32:59,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 170 transitions, 2137 flow [2024-06-03 20:32:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:32:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:32:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-03 20:32:59,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822368421052632 [2024-06-03 20:32:59,468 INFO L175 Difference]: Start difference. First operand has 159 places, 130 transitions, 1676 flow. Second operand 8 states and 177 transitions. [2024-06-03 20:32:59,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 170 transitions, 2137 flow [2024-06-03 20:32:59,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 170 transitions, 2082 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-03 20:32:59,514 INFO L231 Difference]: Finished difference. Result has 170 places, 142 transitions, 1941 flow [2024-06-03 20:32:59,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1624, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1941, PETRI_PLACES=170, PETRI_TRANSITIONS=142} [2024-06-03 20:32:59,514 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2024-06-03 20:32:59,515 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 142 transitions, 1941 flow [2024-06-03 20:32:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:59,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:59,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 20:32:59,515 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)] === [2024-06-03 20:32:59,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash 728752992, now seen corresponding path program 1 times [2024-06-03 20:32:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104840989] [2024-06-03 20:32:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:59,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:59,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:59,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104840989] [2024-06-03 20:32:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104840989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:59,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710030518] [2024-06-03 20:32:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:59,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:59,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:59,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:59,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 142 transitions, 1941 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:59,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:59,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:59,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:32:59,792 INFO L124 PetriNetUnfolderBase]: 387/980 cut-off events. [2024-06-03 20:32:59,792 INFO L125 PetriNetUnfolderBase]: For 18509/18559 co-relation queries the response was YES. [2024-06-03 20:32:59,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5760 conditions, 980 events. 387/980 cut-off events. For 18509/18559 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6527 event pairs, 90 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 5466. Up to 281 conditions per place. [2024-06-03 20:32:59,802 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 70 selfloop transitions, 41 changer transitions 0/159 dead transitions. [2024-06-03 20:32:59,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 159 transitions, 2300 flow [2024-06-03 20:32:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:32:59,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:32:59,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-03 20:32:59,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2024-06-03 20:32:59,803 INFO L175 Difference]: Start difference. First operand has 170 places, 142 transitions, 1941 flow. Second operand 6 states and 139 transitions. [2024-06-03 20:32:59,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 159 transitions, 2300 flow [2024-06-03 20:32:59,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 159 transitions, 2266 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-03 20:32:59,856 INFO L231 Difference]: Finished difference. Result has 175 places, 143 transitions, 2010 flow [2024-06-03 20:32:59,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2010, PETRI_PLACES=175, PETRI_TRANSITIONS=143} [2024-06-03 20:32:59,857 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2024-06-03 20:32:59,857 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 143 transitions, 2010 flow [2024-06-03 20:32:59,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:59,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:32:59,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:32:59,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 20:32:59,858 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)] === [2024-06-03 20:32:59,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:32:59,858 INFO L85 PathProgramCache]: Analyzing trace with hash 14369211, now seen corresponding path program 4 times [2024-06-03 20:32:59,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:32:59,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269940284] [2024-06-03 20:32:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:32:59,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:32:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:32:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:32:59,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:32:59,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269940284] [2024-06-03 20:32:59,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269940284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:32:59,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:32:59,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:32:59,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133537361] [2024-06-03 20:32:59,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:32:59,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:32:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:32:59,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:32:59,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:32:59,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:32:59,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 143 transitions, 2010 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:32:59,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:32:59,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:32:59,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:00,113 INFO L124 PetriNetUnfolderBase]: 403/1021 cut-off events. [2024-06-03 20:33:00,114 INFO L125 PetriNetUnfolderBase]: For 19824/19866 co-relation queries the response was YES. [2024-06-03 20:33:00,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6057 conditions, 1021 events. 403/1021 cut-off events. For 19824/19866 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6839 event pairs, 123 based on Foata normal form. 11/1012 useless extension candidates. Maximal degree in co-relation 5582. Up to 288 conditions per place. [2024-06-03 20:33:00,123 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 73 selfloop transitions, 33 changer transitions 0/154 dead transitions. [2024-06-03 20:33:00,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 154 transitions, 2370 flow [2024-06-03 20:33:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-03 20:33:00,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-03 20:33:00,124 INFO L175 Difference]: Start difference. First operand has 175 places, 143 transitions, 2010 flow. Second operand 6 states and 130 transitions. [2024-06-03 20:33:00,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 154 transitions, 2370 flow [2024-06-03 20:33:00,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 154 transitions, 2307 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-03 20:33:00,187 INFO L231 Difference]: Finished difference. Result has 178 places, 146 transitions, 2055 flow [2024-06-03 20:33:00,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2055, PETRI_PLACES=178, PETRI_TRANSITIONS=146} [2024-06-03 20:33:00,187 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 139 predicate places. [2024-06-03 20:33:00,188 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 146 transitions, 2055 flow [2024-06-03 20:33:00,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:00,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:00,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:00,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 20:33:00,188 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)] === [2024-06-03 20:33:00,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1332154496, now seen corresponding path program 2 times [2024-06-03 20:33:00,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:00,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473639649] [2024-06-03 20:33:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:00,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:00,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:00,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473639649] [2024-06-03 20:33:00,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473639649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927670881] [2024-06-03 20:33:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:00,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:00,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:00,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:00,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 146 transitions, 2055 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:00,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:00,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:00,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:00,472 INFO L124 PetriNetUnfolderBase]: 397/998 cut-off events. [2024-06-03 20:33:00,473 INFO L125 PetriNetUnfolderBase]: For 20997/21045 co-relation queries the response was YES. [2024-06-03 20:33:00,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6013 conditions, 998 events. 397/998 cut-off events. For 20997/21045 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6597 event pairs, 67 based on Foata normal form. 10/985 useless extension candidates. Maximal degree in co-relation 5608. Up to 291 conditions per place. [2024-06-03 20:33:00,481 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 69 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2024-06-03 20:33:00,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 162 transitions, 2470 flow [2024-06-03 20:33:00,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:00,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-03 20:33:00,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-03 20:33:00,482 INFO L175 Difference]: Start difference. First operand has 178 places, 146 transitions, 2055 flow. Second operand 6 states and 136 transitions. [2024-06-03 20:33:00,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 162 transitions, 2470 flow [2024-06-03 20:33:00,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 162 transitions, 2409 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 20:33:00,538 INFO L231 Difference]: Finished difference. Result has 181 places, 147 transitions, 2105 flow [2024-06-03 20:33:00,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2105, PETRI_PLACES=181, PETRI_TRANSITIONS=147} [2024-06-03 20:33:00,541 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 142 predicate places. [2024-06-03 20:33:00,541 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 147 transitions, 2105 flow [2024-06-03 20:33:00,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:00,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:00,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:00,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 20:33:00,542 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)] === [2024-06-03 20:33:00,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash -191361824, now seen corresponding path program 3 times [2024-06-03 20:33:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037928572] [2024-06-03 20:33:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:00,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:00,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037928572] [2024-06-03 20:33:00,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037928572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:00,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:00,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:00,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487003522] [2024-06-03 20:33:00,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:00,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:00,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:00,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:00,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:00,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 147 transitions, 2105 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:00,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:00,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:00,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:00,797 INFO L124 PetriNetUnfolderBase]: 399/1006 cut-off events. [2024-06-03 20:33:00,798 INFO L125 PetriNetUnfolderBase]: For 22082/22134 co-relation queries the response was YES. [2024-06-03 20:33:00,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6087 conditions, 1006 events. 399/1006 cut-off events. For 22082/22134 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6689 event pairs, 66 based on Foata normal form. 10/993 useless extension candidates. Maximal degree in co-relation 5671. Up to 292 conditions per place. [2024-06-03 20:33:00,806 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 71 selfloop transitions, 42 changer transitions 0/161 dead transitions. [2024-06-03 20:33:00,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 161 transitions, 2457 flow [2024-06-03 20:33:00,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-03 20:33:00,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2024-06-03 20:33:00,808 INFO L175 Difference]: Start difference. First operand has 181 places, 147 transitions, 2105 flow. Second operand 6 states and 135 transitions. [2024-06-03 20:33:00,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 161 transitions, 2457 flow [2024-06-03 20:33:00,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 161 transitions, 2347 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-03 20:33:00,866 INFO L231 Difference]: Finished difference. Result has 183 places, 147 transitions, 2083 flow [2024-06-03 20:33:00,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2083, PETRI_PLACES=183, PETRI_TRANSITIONS=147} [2024-06-03 20:33:00,867 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2024-06-03 20:33:00,867 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 147 transitions, 2083 flow [2024-06-03 20:33:00,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:00,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:00,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 20:33:00,868 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)] === [2024-06-03 20:33:00,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:00,870 INFO L85 PathProgramCache]: Analyzing trace with hash -191361669, now seen corresponding path program 5 times [2024-06-03 20:33:00,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:00,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014181588] [2024-06-03 20:33:00,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:00,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:00,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:00,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014181588] [2024-06-03 20:33:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014181588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:00,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:00,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:00,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260148564] [2024-06-03 20:33:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:00,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:00,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:00,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:01,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:01,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 147 transitions, 2083 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:01,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:01,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:01,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:01,159 INFO L124 PetriNetUnfolderBase]: 405/1033 cut-off events. [2024-06-03 20:33:01,160 INFO L125 PetriNetUnfolderBase]: For 22335/22373 co-relation queries the response was YES. [2024-06-03 20:33:01,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 1033 events. 405/1033 cut-off events. For 22335/22373 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6968 event pairs, 113 based on Foata normal form. 17/1032 useless extension candidates. Maximal degree in co-relation 5666. Up to 287 conditions per place. [2024-06-03 20:33:01,169 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 75 selfloop transitions, 32 changer transitions 0/155 dead transitions. [2024-06-03 20:33:01,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 155 transitions, 2413 flow [2024-06-03 20:33:01,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-03 20:33:01,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-06-03 20:33:01,170 INFO L175 Difference]: Start difference. First operand has 183 places, 147 transitions, 2083 flow. Second operand 6 states and 127 transitions. [2024-06-03 20:33:01,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 155 transitions, 2413 flow [2024-06-03 20:33:01,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 155 transitions, 2287 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-03 20:33:01,231 INFO L231 Difference]: Finished difference. Result has 183 places, 147 transitions, 2027 flow [2024-06-03 20:33:01,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1957, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2027, PETRI_PLACES=183, PETRI_TRANSITIONS=147} [2024-06-03 20:33:01,231 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2024-06-03 20:33:01,231 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 147 transitions, 2027 flow [2024-06-03 20:33:01,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:01,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:01,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:01,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 20:33:01,232 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)] === [2024-06-03 20:33:01,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash -138712909, now seen corresponding path program 1 times [2024-06-03 20:33:01,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:01,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418618123] [2024-06-03 20:33:01,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:01,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418618123] [2024-06-03 20:33:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418618123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781478613] [2024-06-03 20:33:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:01,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:01,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:01,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 147 transitions, 2027 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:01,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:01,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:01,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:01,487 INFO L124 PetriNetUnfolderBase]: 404/1036 cut-off events. [2024-06-03 20:33:01,487 INFO L125 PetriNetUnfolderBase]: For 21427/21449 co-relation queries the response was YES. [2024-06-03 20:33:01,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 1036 events. 404/1036 cut-off events. For 21427/21449 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6975 event pairs, 52 based on Foata normal form. 10/1034 useless extension candidates. Maximal degree in co-relation 5560. Up to 215 conditions per place. [2024-06-03 20:33:01,496 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 82 selfloop transitions, 25 changer transitions 6/161 dead transitions. [2024-06-03 20:33:01,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 161 transitions, 2387 flow [2024-06-03 20:33:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-03 20:33:01,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-03 20:33:01,497 INFO L175 Difference]: Start difference. First operand has 183 places, 147 transitions, 2027 flow. Second operand 6 states and 134 transitions. [2024-06-03 20:33:01,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 161 transitions, 2387 flow [2024-06-03 20:33:01,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 161 transitions, 2270 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-03 20:33:01,562 INFO L231 Difference]: Finished difference. Result has 182 places, 143 transitions, 1889 flow [2024-06-03 20:33:01,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1889, PETRI_PLACES=182, PETRI_TRANSITIONS=143} [2024-06-03 20:33:01,562 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2024-06-03 20:33:01,562 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 143 transitions, 1889 flow [2024-06-03 20:33:01,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:01,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:01,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:01,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 20:33:01,563 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)] === [2024-06-03 20:33:01,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:01,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1649750197, now seen corresponding path program 2 times [2024-06-03 20:33:01,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:01,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96873131] [2024-06-03 20:33:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:01,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:01,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96873131] [2024-06-03 20:33:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96873131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707808482] [2024-06-03 20:33:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:01,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:01,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:01,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:01,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:01,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 143 transitions, 1889 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:01,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:01,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:01,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:01,826 INFO L124 PetriNetUnfolderBase]: 373/957 cut-off events. [2024-06-03 20:33:01,826 INFO L125 PetriNetUnfolderBase]: For 21003/21022 co-relation queries the response was YES. [2024-06-03 20:33:01,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 957 events. 373/957 cut-off events. For 21003/21022 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6286 event pairs, 41 based on Foata normal form. 10/954 useless extension candidates. Maximal degree in co-relation 5103. Up to 201 conditions per place. [2024-06-03 20:33:01,834 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 81 selfloop transitions, 24 changer transitions 0/153 dead transitions. [2024-06-03 20:33:01,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 153 transitions, 2227 flow [2024-06-03 20:33:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-03 20:33:01,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-03 20:33:01,835 INFO L175 Difference]: Start difference. First operand has 182 places, 143 transitions, 1889 flow. Second operand 6 states and 130 transitions. [2024-06-03 20:33:01,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 153 transitions, 2227 flow [2024-06-03 20:33:01,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 153 transitions, 2152 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-03 20:33:01,889 INFO L231 Difference]: Finished difference. Result has 178 places, 143 transitions, 1875 flow [2024-06-03 20:33:01,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1875, PETRI_PLACES=178, PETRI_TRANSITIONS=143} [2024-06-03 20:33:01,890 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 139 predicate places. [2024-06-03 20:33:01,890 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 143 transitions, 1875 flow [2024-06-03 20:33:01,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:01,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:01,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:01,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-03 20:33:01,891 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)] === [2024-06-03 20:33:01,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:01,891 INFO L85 PathProgramCache]: Analyzing trace with hash 176239031, now seen corresponding path program 3 times [2024-06-03 20:33:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:01,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156412762] [2024-06-03 20:33:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:01,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:01,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156412762] [2024-06-03 20:33:01,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156412762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:01,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:01,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:01,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419099370] [2024-06-03 20:33:01,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:01,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:01,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:01,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:01,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:01,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 143 transitions, 1875 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:01,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:01,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:01,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:02,120 INFO L124 PetriNetUnfolderBase]: 367/943 cut-off events. [2024-06-03 20:33:02,120 INFO L125 PetriNetUnfolderBase]: For 19124/19140 co-relation queries the response was YES. [2024-06-03 20:33:02,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5281 conditions, 943 events. 367/943 cut-off events. For 19124/19140 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6180 event pairs, 41 based on Foata normal form. 16/947 useless extension candidates. Maximal degree in co-relation 4874. Up to 199 conditions per place. [2024-06-03 20:33:02,129 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 58 selfloop transitions, 47 changer transitions 0/153 dead transitions. [2024-06-03 20:33:02,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 153 transitions, 2157 flow [2024-06-03 20:33:02,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:02,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-03 20:33:02,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-03 20:33:02,130 INFO L175 Difference]: Start difference. First operand has 178 places, 143 transitions, 1875 flow. Second operand 6 states and 133 transitions. [2024-06-03 20:33:02,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 153 transitions, 2157 flow [2024-06-03 20:33:02,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 153 transitions, 2050 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 20:33:02,174 INFO L231 Difference]: Finished difference. Result has 176 places, 143 transitions, 1871 flow [2024-06-03 20:33:02,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1871, PETRI_PLACES=176, PETRI_TRANSITIONS=143} [2024-06-03 20:33:02,174 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 137 predicate places. [2024-06-03 20:33:02,174 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 143 transitions, 1871 flow [2024-06-03 20:33:02,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:02,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:02,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:02,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-03 20:33:02,175 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)] === [2024-06-03 20:33:02,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash -485946505, now seen corresponding path program 1 times [2024-06-03 20:33:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:02,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258179594] [2024-06-03 20:33:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258179594] [2024-06-03 20:33:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258179594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:02,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:02,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047422198] [2024-06-03 20:33:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:02,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:02,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:02,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:02,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:02,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 143 transitions, 1871 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:02,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:02,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:02,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:02,424 INFO L124 PetriNetUnfolderBase]: 377/982 cut-off events. [2024-06-03 20:33:02,424 INFO L125 PetriNetUnfolderBase]: For 20253/20268 co-relation queries the response was YES. [2024-06-03 20:33:02,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5397 conditions, 982 events. 377/982 cut-off events. For 20253/20268 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6621 event pairs, 79 based on Foata normal form. 16/987 useless extension candidates. Maximal degree in co-relation 5163. Up to 198 conditions per place. [2024-06-03 20:33:02,464 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 55 selfloop transitions, 55 changer transitions 0/158 dead transitions. [2024-06-03 20:33:02,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 158 transitions, 2193 flow [2024-06-03 20:33:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:02,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:02,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-03 20:33:02,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-03 20:33:02,466 INFO L175 Difference]: Start difference. First operand has 176 places, 143 transitions, 1871 flow. Second operand 6 states and 136 transitions. [2024-06-03 20:33:02,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 158 transitions, 2193 flow [2024-06-03 20:33:02,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 158 transitions, 2098 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 20:33:02,521 INFO L231 Difference]: Finished difference. Result has 177 places, 144 transitions, 1913 flow [2024-06-03 20:33:02,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1913, PETRI_PLACES=177, PETRI_TRANSITIONS=144} [2024-06-03 20:33:02,521 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-06-03 20:33:02,521 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 144 transitions, 1913 flow [2024-06-03 20:33:02,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:02,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:02,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:02,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-03 20:33:02,522 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)] === [2024-06-03 20:33:02,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:02,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1493352477, now seen corresponding path program 2 times [2024-06-03 20:33:02,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:02,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287984934] [2024-06-03 20:33:02,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:02,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:02,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287984934] [2024-06-03 20:33:02,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287984934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:02,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:02,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:02,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14574966] [2024-06-03 20:33:02,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:02,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:02,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:02,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:02,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:02,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 144 transitions, 1913 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:02,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:02,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:02,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:02,804 INFO L124 PetriNetUnfolderBase]: 398/1049 cut-off events. [2024-06-03 20:33:02,804 INFO L125 PetriNetUnfolderBase]: For 22268/22288 co-relation queries the response was YES. [2024-06-03 20:33:02,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5761 conditions, 1049 events. 398/1049 cut-off events. For 22268/22288 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7287 event pairs, 77 based on Foata normal form. 16/1050 useless extension candidates. Maximal degree in co-relation 5521. Up to 279 conditions per place. [2024-06-03 20:33:02,813 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 84 selfloop transitions, 27 changer transitions 0/159 dead transitions. [2024-06-03 20:33:02,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 159 transitions, 2303 flow [2024-06-03 20:33:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-03 20:33:02,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-03 20:33:02,814 INFO L175 Difference]: Start difference. First operand has 177 places, 144 transitions, 1913 flow. Second operand 6 states and 133 transitions. [2024-06-03 20:33:02,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 159 transitions, 2303 flow [2024-06-03 20:33:02,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 159 transitions, 2196 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-03 20:33:02,874 INFO L231 Difference]: Finished difference. Result has 180 places, 146 transitions, 1904 flow [2024-06-03 20:33:02,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1904, PETRI_PLACES=180, PETRI_TRANSITIONS=146} [2024-06-03 20:33:02,874 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 141 predicate places. [2024-06-03 20:33:02,874 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 146 transitions, 1904 flow [2024-06-03 20:33:02,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:02,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:02,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-03 20:33:02,875 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)] === [2024-06-03 20:33:02,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash -497747477, now seen corresponding path program 3 times [2024-06-03 20:33:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:02,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696686014] [2024-06-03 20:33:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:02,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:02,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:02,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696686014] [2024-06-03 20:33:02,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696686014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:02,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:02,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307833205] [2024-06-03 20:33:02,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:02,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:02,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:02,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:02,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 146 transitions, 1904 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:02,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:02,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:02,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:03,110 INFO L124 PetriNetUnfolderBase]: 390/1031 cut-off events. [2024-06-03 20:33:03,111 INFO L125 PetriNetUnfolderBase]: For 19409/19432 co-relation queries the response was YES. [2024-06-03 20:33:03,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5612 conditions, 1031 events. 390/1031 cut-off events. For 19409/19432 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7132 event pairs, 77 based on Foata normal form. 10/1028 useless extension candidates. Maximal degree in co-relation 5373. Up to 276 conditions per place. [2024-06-03 20:33:03,119 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 76 selfloop transitions, 33 changer transitions 0/157 dead transitions. [2024-06-03 20:33:03,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 157 transitions, 2204 flow [2024-06-03 20:33:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-03 20:33:03,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-03 20:33:03,121 INFO L175 Difference]: Start difference. First operand has 180 places, 146 transitions, 1904 flow. Second operand 6 states and 130 transitions. [2024-06-03 20:33:03,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 157 transitions, 2204 flow [2024-06-03 20:33:03,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 157 transitions, 2154 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 20:33:03,180 INFO L231 Difference]: Finished difference. Result has 183 places, 146 transitions, 1924 flow [2024-06-03 20:33:03,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=183, PETRI_TRANSITIONS=146} [2024-06-03 20:33:03,181 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2024-06-03 20:33:03,181 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 146 transitions, 1924 flow [2024-06-03 20:33:03,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:03,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:03,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:03,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-03 20:33:03,182 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)] === [2024-06-03 20:33:03,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1640044167, now seen corresponding path program 4 times [2024-06-03 20:33:03,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:03,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19892297] [2024-06-03 20:33:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:03,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:03,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:03,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19892297] [2024-06-03 20:33:03,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19892297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:03,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:03,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9452799] [2024-06-03 20:33:03,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:03,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:03,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:03,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 146 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:03,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:03,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:03,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:03,415 INFO L124 PetriNetUnfolderBase]: 395/1048 cut-off events. [2024-06-03 20:33:03,415 INFO L125 PetriNetUnfolderBase]: For 20483/20509 co-relation queries the response was YES. [2024-06-03 20:33:03,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5730 conditions, 1048 events. 395/1048 cut-off events. For 20483/20509 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7254 event pairs, 95 based on Foata normal form. 10/1040 useless extension candidates. Maximal degree in co-relation 5330. Up to 328 conditions per place. [2024-06-03 20:33:03,425 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 79 selfloop transitions, 31 changer transitions 0/158 dead transitions. [2024-06-03 20:33:03,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 158 transitions, 2300 flow [2024-06-03 20:33:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-03 20:33:03,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-03 20:33:03,426 INFO L175 Difference]: Start difference. First operand has 183 places, 146 transitions, 1924 flow. Second operand 6 states and 128 transitions. [2024-06-03 20:33:03,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 158 transitions, 2300 flow [2024-06-03 20:33:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 158 transitions, 2230 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 20:33:03,489 INFO L231 Difference]: Finished difference. Result has 184 places, 147 transitions, 1934 flow [2024-06-03 20:33:03,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1934, PETRI_PLACES=184, PETRI_TRANSITIONS=147} [2024-06-03 20:33:03,491 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 145 predicate places. [2024-06-03 20:33:03,491 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 147 transitions, 1934 flow [2024-06-03 20:33:03,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:03,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:03,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:03,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-03 20:33:03,491 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)] === [2024-06-03 20:33:03,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1637247657, now seen corresponding path program 5 times [2024-06-03 20:33:03,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:03,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581901696] [2024-06-03 20:33:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:03,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581901696] [2024-06-03 20:33:03,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581901696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:03,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:03,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:03,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282751848] [2024-06-03 20:33:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:03,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:03,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:03,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:03,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 147 transitions, 1934 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:03,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:03,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:03,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:03,716 INFO L124 PetriNetUnfolderBase]: 397/1056 cut-off events. [2024-06-03 20:33:03,716 INFO L125 PetriNetUnfolderBase]: For 20221/20245 co-relation queries the response was YES. [2024-06-03 20:33:03,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 1056 events. 397/1056 cut-off events. For 20221/20245 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7369 event pairs, 95 based on Foata normal form. 8/1048 useless extension candidates. Maximal degree in co-relation 5329. Up to 327 conditions per place. [2024-06-03 20:33:03,725 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 91 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2024-06-03 20:33:03,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 158 transitions, 2300 flow [2024-06-03 20:33:03,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-03 20:33:03,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-06-03 20:33:03,725 INFO L175 Difference]: Start difference. First operand has 184 places, 147 transitions, 1934 flow. Second operand 6 states and 130 transitions. [2024-06-03 20:33:03,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 158 transitions, 2300 flow [2024-06-03 20:33:03,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 158 transitions, 2237 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 20:33:03,791 INFO L231 Difference]: Finished difference. Result has 185 places, 147 transitions, 1913 flow [2024-06-03 20:33:03,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1913, PETRI_PLACES=185, PETRI_TRANSITIONS=147} [2024-06-03 20:33:03,791 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2024-06-03 20:33:03,791 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 147 transitions, 1913 flow [2024-06-03 20:33:03,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:03,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:03,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:03,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-03 20:33:03,792 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)] === [2024-06-03 20:33:03,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1637243007, now seen corresponding path program 6 times [2024-06-03 20:33:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97819341] [2024-06-03 20:33:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:03,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97819341] [2024-06-03 20:33:03,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97819341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:03,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:03,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:03,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388871563] [2024-06-03 20:33:03,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:03,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:03,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:03,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:03,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:03,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:03,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 147 transitions, 1913 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:03,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:03,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:03,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:04,034 INFO L124 PetriNetUnfolderBase]: 391/1042 cut-off events. [2024-06-03 20:33:04,034 INFO L125 PetriNetUnfolderBase]: For 19910/19928 co-relation queries the response was YES. [2024-06-03 20:33:04,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 1042 events. 391/1042 cut-off events. For 19910/19928 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7236 event pairs, 91 based on Foata normal form. 14/1041 useless extension candidates. Maximal degree in co-relation 5015. Up to 325 conditions per place. [2024-06-03 20:33:04,043 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 89 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2024-06-03 20:33:04,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 157 transitions, 2215 flow [2024-06-03 20:33:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-03 20:33:04,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-06-03 20:33:04,044 INFO L175 Difference]: Start difference. First operand has 185 places, 147 transitions, 1913 flow. Second operand 6 states and 128 transitions. [2024-06-03 20:33:04,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 157 transitions, 2215 flow [2024-06-03 20:33:04,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 157 transitions, 2138 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-03 20:33:04,100 INFO L231 Difference]: Finished difference. Result has 185 places, 147 transitions, 1882 flow [2024-06-03 20:33:04,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1882, PETRI_PLACES=185, PETRI_TRANSITIONS=147} [2024-06-03 20:33:04,101 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 146 predicate places. [2024-06-03 20:33:04,101 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 147 transitions, 1882 flow [2024-06-03 20:33:04,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:04,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:04,101 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, 1, 1] [2024-06-03 20:33:04,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-03 20:33:04,101 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)] === [2024-06-03 20:33:04,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2012710222, now seen corresponding path program 1 times [2024-06-03 20:33:04,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:04,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558618351] [2024-06-03 20:33:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:04,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:04,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558618351] [2024-06-03 20:33:04,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558618351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:04,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:04,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:04,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975111510] [2024-06-03 20:33:04,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:04,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:04,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:04,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:04,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:04,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 147 transitions, 1882 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:04,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:04,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:04,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:04,349 INFO L124 PetriNetUnfolderBase]: 382/1030 cut-off events. [2024-06-03 20:33:04,350 INFO L125 PetriNetUnfolderBase]: For 16001/16016 co-relation queries the response was YES. [2024-06-03 20:33:04,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5213 conditions, 1030 events. 382/1030 cut-off events. For 16001/16016 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7219 event pairs, 107 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 4816. Up to 294 conditions per place. [2024-06-03 20:33:04,359 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 70 selfloop transitions, 27 changer transitions 10/155 dead transitions. [2024-06-03 20:33:04,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 155 transitions, 2178 flow [2024-06-03 20:33:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-03 20:33:04,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-06-03 20:33:04,360 INFO L175 Difference]: Start difference. First operand has 185 places, 147 transitions, 1882 flow. Second operand 6 states and 127 transitions. [2024-06-03 20:33:04,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 155 transitions, 2178 flow [2024-06-03 20:33:04,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 155 transitions, 2136 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 20:33:04,414 INFO L231 Difference]: Finished difference. Result has 186 places, 141 transitions, 1814 flow [2024-06-03 20:33:04,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1814, PETRI_PLACES=186, PETRI_TRANSITIONS=141} [2024-06-03 20:33:04,414 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 147 predicate places. [2024-06-03 20:33:04,415 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 141 transitions, 1814 flow [2024-06-03 20:33:04,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:04,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:04,415 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, 1, 1] [2024-06-03 20:33:04,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-03 20:33:04,415 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)] === [2024-06-03 20:33:04,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1541714512, now seen corresponding path program 2 times [2024-06-03 20:33:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:04,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750979096] [2024-06-03 20:33:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:04,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:04,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750979096] [2024-06-03 20:33:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750979096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:04,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:04,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:04,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487383076] [2024-06-03 20:33:04,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:04,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:04,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:04,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:04,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:04,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 141 transitions, 1814 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:04,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:04,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:04,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:04,625 INFO L124 PetriNetUnfolderBase]: 351/957 cut-off events. [2024-06-03 20:33:04,625 INFO L125 PetriNetUnfolderBase]: For 15090/15105 co-relation queries the response was YES. [2024-06-03 20:33:04,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 957 events. 351/957 cut-off events. For 15090/15105 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6618 event pairs, 102 based on Foata normal form. 2/943 useless extension candidates. Maximal degree in co-relation 4508. Up to 276 conditions per place. [2024-06-03 20:33:04,632 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 44 selfloop transitions, 55 changer transitions 0/147 dead transitions. [2024-06-03 20:33:04,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 147 transitions, 2024 flow [2024-06-03 20:33:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:04,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-03 20:33:04,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2024-06-03 20:33:04,633 INFO L175 Difference]: Start difference. First operand has 186 places, 141 transitions, 1814 flow. Second operand 6 states and 127 transitions. [2024-06-03 20:33:04,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 147 transitions, 2024 flow [2024-06-03 20:33:04,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 147 transitions, 1910 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-03 20:33:04,678 INFO L231 Difference]: Finished difference. Result has 177 places, 141 transitions, 1814 flow [2024-06-03 20:33:04,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1814, PETRI_PLACES=177, PETRI_TRANSITIONS=141} [2024-06-03 20:33:04,679 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-06-03 20:33:04,679 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 141 transitions, 1814 flow [2024-06-03 20:33:04,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:04,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:04,680 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, 1, 1] [2024-06-03 20:33:04,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-03 20:33:04,680 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)] === [2024-06-03 20:33:04,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:04,680 INFO L85 PathProgramCache]: Analyzing trace with hash -596132417, now seen corresponding path program 1 times [2024-06-03 20:33:04,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:04,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997695236] [2024-06-03 20:33:04,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:04,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:04,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:04,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997695236] [2024-06-03 20:33:04,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997695236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:04,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:04,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071831963] [2024-06-03 20:33:04,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:04,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:04,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:04,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:04,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:04,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:04,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 141 transitions, 1814 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:04,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:04,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:04,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:04,921 INFO L124 PetriNetUnfolderBase]: 352/951 cut-off events. [2024-06-03 20:33:04,921 INFO L125 PetriNetUnfolderBase]: For 12686/12699 co-relation queries the response was YES. [2024-06-03 20:33:04,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4787 conditions, 951 events. 352/951 cut-off events. For 12686/12699 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6486 event pairs, 50 based on Foata normal form. 2/943 useless extension candidates. Maximal degree in co-relation 4557. Up to 135 conditions per place. [2024-06-03 20:33:04,928 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 49 selfloop transitions, 59 changer transitions 0/156 dead transitions. [2024-06-03 20:33:04,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 156 transitions, 2126 flow [2024-06-03 20:33:04,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-03 20:33:04,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2024-06-03 20:33:04,929 INFO L175 Difference]: Start difference. First operand has 177 places, 141 transitions, 1814 flow. Second operand 6 states and 137 transitions. [2024-06-03 20:33:04,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 156 transitions, 2126 flow [2024-06-03 20:33:04,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 156 transitions, 1999 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-03 20:33:04,970 INFO L231 Difference]: Finished difference. Result has 176 places, 141 transitions, 1811 flow [2024-06-03 20:33:04,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1811, PETRI_PLACES=176, PETRI_TRANSITIONS=141} [2024-06-03 20:33:04,971 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 137 predicate places. [2024-06-03 20:33:04,972 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 141 transitions, 1811 flow [2024-06-03 20:33:04,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:04,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:04,972 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, 1, 1] [2024-06-03 20:33:04,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-03 20:33:04,972 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)] === [2024-06-03 20:33:04,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash 236410679, now seen corresponding path program 2 times [2024-06-03 20:33:04,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:04,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170272733] [2024-06-03 20:33:04,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:04,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:05,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:05,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170272733] [2024-06-03 20:33:05,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170272733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:05,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:05,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:05,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023368780] [2024-06-03 20:33:05,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:05,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:05,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:05,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:05,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:05,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:05,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 141 transitions, 1811 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:05,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:05,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:05,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:05,213 INFO L124 PetriNetUnfolderBase]: 361/972 cut-off events. [2024-06-03 20:33:05,213 INFO L125 PetriNetUnfolderBase]: For 13337/13352 co-relation queries the response was YES. [2024-06-03 20:33:05,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4896 conditions, 972 events. 361/972 cut-off events. For 13337/13352 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6698 event pairs, 53 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 4659. Up to 215 conditions per place. [2024-06-03 20:33:05,220 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 69 selfloop transitions, 26 changer transitions 11/154 dead transitions. [2024-06-03 20:33:05,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 154 transitions, 2129 flow [2024-06-03 20:33:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:05,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:05,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-03 20:33:05,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2024-06-03 20:33:05,226 INFO L175 Difference]: Start difference. First operand has 176 places, 141 transitions, 1811 flow. Second operand 6 states and 131 transitions. [2024-06-03 20:33:05,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 154 transitions, 2129 flow [2024-06-03 20:33:05,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 154 transitions, 1949 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-03 20:33:05,274 INFO L231 Difference]: Finished difference. Result has 174 places, 135 transitions, 1624 flow [2024-06-03 20:33:05,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1624, PETRI_PLACES=174, PETRI_TRANSITIONS=135} [2024-06-03 20:33:05,276 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 135 predicate places. [2024-06-03 20:33:05,276 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 135 transitions, 1624 flow [2024-06-03 20:33:05,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:05,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:05,276 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, 1, 1] [2024-06-03 20:33:05,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-03 20:33:05,276 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)] === [2024-06-03 20:33:05,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1403645461, now seen corresponding path program 3 times [2024-06-03 20:33:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:05,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179538761] [2024-06-03 20:33:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:05,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:05,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179538761] [2024-06-03 20:33:05,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179538761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:05,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:05,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:05,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147075288] [2024-06-03 20:33:05,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:05,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:05,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:05,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:05,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:05,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:05,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 135 transitions, 1624 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:05,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:05,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:05,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:05,517 INFO L124 PetriNetUnfolderBase]: 320/874 cut-off events. [2024-06-03 20:33:05,517 INFO L125 PetriNetUnfolderBase]: For 11154/11167 co-relation queries the response was YES. [2024-06-03 20:33:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 874 events. 320/874 cut-off events. For 11154/11167 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5928 event pairs, 62 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 3979. Up to 211 conditions per place. [2024-06-03 20:33:05,523 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 74 selfloop transitions, 22 changer transitions 8/152 dead transitions. [2024-06-03 20:33:05,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 152 transitions, 1872 flow [2024-06-03 20:33:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-03 20:33:05,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5964912280701754 [2024-06-03 20:33:05,524 INFO L175 Difference]: Start difference. First operand has 174 places, 135 transitions, 1624 flow. Second operand 6 states and 136 transitions. [2024-06-03 20:33:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 152 transitions, 1872 flow [2024-06-03 20:33:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 152 transitions, 1810 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-03 20:33:05,560 INFO L231 Difference]: Finished difference. Result has 166 places, 130 transitions, 1553 flow [2024-06-03 20:33:05,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1553, PETRI_PLACES=166, PETRI_TRANSITIONS=130} [2024-06-03 20:33:05,560 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 127 predicate places. [2024-06-03 20:33:05,561 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 130 transitions, 1553 flow [2024-06-03 20:33:05,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:05,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:05,561 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, 1, 1, 1] [2024-06-03 20:33:05,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-03 20:33:05,562 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)] === [2024-06-03 20:33:05,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1479050676, now seen corresponding path program 1 times [2024-06-03 20:33:05,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:05,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53380920] [2024-06-03 20:33:05,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:05,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:05,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:05,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53380920] [2024-06-03 20:33:05,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53380920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:05,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:05,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282909678] [2024-06-03 20:33:05,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:05,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:05,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:05,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:05,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:05,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 130 transitions, 1553 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:05,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:05,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:05,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:05,789 INFO L124 PetriNetUnfolderBase]: 291/790 cut-off events. [2024-06-03 20:33:05,789 INFO L125 PetriNetUnfolderBase]: For 8794/8807 co-relation queries the response was YES. [2024-06-03 20:33:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 790 events. 291/790 cut-off events. For 8794/8807 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5182 event pairs, 22 based on Foata normal form. 4/784 useless extension candidates. Maximal degree in co-relation 3578. Up to 213 conditions per place. [2024-06-03 20:33:05,794 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 40 selfloop transitions, 18 changer transitions 55/144 dead transitions. [2024-06-03 20:33:05,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 144 transitions, 1777 flow [2024-06-03 20:33:05,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-03 20:33:05,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5877192982456141 [2024-06-03 20:33:05,795 INFO L175 Difference]: Start difference. First operand has 166 places, 130 transitions, 1553 flow. Second operand 6 states and 134 transitions. [2024-06-03 20:33:05,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 144 transitions, 1777 flow [2024-06-03 20:33:05,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 144 transitions, 1713 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-03 20:33:05,820 INFO L231 Difference]: Finished difference. Result has 156 places, 83 transitions, 896 flow [2024-06-03 20:33:05,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=896, PETRI_PLACES=156, PETRI_TRANSITIONS=83} [2024-06-03 20:33:05,822 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 117 predicate places. [2024-06-03 20:33:05,822 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 83 transitions, 896 flow [2024-06-03 20:33:05,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:05,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:33:05,822 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, 1, 1, 1] [2024-06-03 20:33:05,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-03 20:33:05,822 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)] === [2024-06-03 20:33:05,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:33:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash -567285620, now seen corresponding path program 2 times [2024-06-03 20:33:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:33:05,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578382852] [2024-06-03 20:33:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:33:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:33:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:33:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:33:05,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:33:05,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578382852] [2024-06-03 20:33:05,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578382852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:33:05,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:33:05,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:33:05,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281497340] [2024-06-03 20:33:05,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:33:05,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:33:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:33:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:33:05,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:33:05,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-03 20:33:05,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 83 transitions, 896 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:05,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:33:05,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-03 20:33:05,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:33:05,989 INFO L124 PetriNetUnfolderBase]: 161/449 cut-off events. [2024-06-03 20:33:05,989 INFO L125 PetriNetUnfolderBase]: For 4365/4377 co-relation queries the response was YES. [2024-06-03 20:33:05,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 449 events. 161/449 cut-off events. For 4365/4377 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2528 event pairs, 18 based on Foata normal form. 4/446 useless extension candidates. Maximal degree in co-relation 1955. Up to 80 conditions per place. [2024-06-03 20:33:05,991 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2024-06-03 20:33:05,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 88 transitions, 970 flow [2024-06-03 20:33:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 20:33:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 20:33:05,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-03 20:33:05,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-03 20:33:05,992 INFO L175 Difference]: Start difference. First operand has 156 places, 83 transitions, 896 flow. Second operand 6 states and 116 transitions. [2024-06-03 20:33:05,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 88 transitions, 970 flow [2024-06-03 20:33:05,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 88 transitions, 687 flow, removed 11 selfloop flow, removed 46 redundant places. [2024-06-03 20:33:05,999 INFO L231 Difference]: Finished difference. Result has 99 places, 0 transitions, 0 flow [2024-06-03 20:33:05,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=99, PETRI_TRANSITIONS=0} [2024-06-03 20:33:06,000 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2024-06-03 20:33:06,000 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 0 transitions, 0 flow [2024-06-03 20:33:06,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 20:33:06,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:33:06,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:33:06,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:33:06,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:33:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-03 20:33:06,005 INFO L445 BasicCegarLoop]: Path program histogram: [6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:33:06,007 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:33:06,007 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:33:06,010 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:33:06,010 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:33:06,011 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:33:06 BasicIcfg [2024-06-03 20:33:06,011 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:33:06,011 INFO L158 Benchmark]: Toolchain (without parser) took 14601.61ms. Allocated memory was 169.9MB in the beginning and 614.5MB in the end (delta: 444.6MB). Free memory was 96.7MB in the beginning and 451.3MB in the end (delta: -354.6MB). Peak memory consumption was 91.0MB. Max. memory is 16.1GB. [2024-06-03 20:33:06,011 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:33:06,011 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 169.9MB. Free memory was 100.4MB in the beginning and 100.2MB in the end (delta: 209.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:33:06,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.98ms. Allocated memory is still 169.9MB. Free memory was 96.5MB in the beginning and 118.9MB in the end (delta: -22.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2024-06-03 20:33:06,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.84ms. Allocated memory is still 169.9MB. Free memory was 118.9MB in the beginning and 116.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:33:06,012 INFO L158 Benchmark]: Boogie Preprocessor took 70.62ms. Allocated memory is still 169.9MB. Free memory was 116.8MB in the beginning and 113.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:33:06,013 INFO L158 Benchmark]: RCFGBuilder took 371.67ms. Allocated memory is still 169.9MB. Free memory was 113.8MB in the beginning and 90.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-03 20:33:06,013 INFO L158 Benchmark]: TraceAbstraction took 13614.49ms. Allocated memory was 169.9MB in the beginning and 614.5MB in the end (delta: 444.6MB). Free memory was 89.5MB in the beginning and 451.3MB in the end (delta: -361.8MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2024-06-03 20:33:06,016 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 169.9MB. Free memory was 100.4MB in the beginning and 100.2MB in the end (delta: 209.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.98ms. Allocated memory is still 169.9MB. Free memory was 96.5MB in the beginning and 118.9MB in the end (delta: -22.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.84ms. Allocated memory is still 169.9MB. Free memory was 118.9MB in the beginning and 116.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.62ms. Allocated memory is still 169.9MB. Free memory was 116.8MB in the beginning and 113.8MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.67ms. Allocated memory is still 169.9MB. Free memory was 113.8MB in the beginning and 90.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 13614.49ms. Allocated memory was 169.9MB in the beginning and 614.5MB in the end (delta: 444.6MB). Free memory was 89.5MB in the beginning and 451.3MB in the end (delta: -361.8MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 762]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 763]: 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, 61 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: 13.5s, OverallIterations: 46, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3565 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2516 mSDsluCounter, 1377 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 965 mSDsCounter, 227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6043 IncrementalHoareTripleChecker+Invalid, 6270 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 227 mSolverCounterUnsat, 412 mSDtfsCounter, 6043 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 234 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2105occurred in iteration=28, InterpolantAutomatonStates: 278, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 788 NumberOfCodeBlocks, 788 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 742 ConstructedInterpolants, 0 QuantifiedInterpolants, 3022 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 46 InterpolantComputations, 46 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! [2024-06-03 20:33:06,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE