./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe010_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe010_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:00:24,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:00:24,873 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:00:24,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:00:24,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:00:24,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:00:24,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:00:24,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:00:24,909 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:00:24,913 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:00:24,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:00:24,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:00:24,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:00:24,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:00:24,916 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:00:24,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:00:24,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:00:24,917 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:00:24,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:00:24,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:00:24,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:00:24,918 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:00:24,918 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:00:24,919 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:00:24,919 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:00:24,919 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:00:24,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:00:24,920 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:00:24,920 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:00:24,921 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:00:24,922 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:00:24,922 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:00:24,922 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:00:24,922 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:00:24,922 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:00:24,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:00:24,923 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:00:24,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:00:24,923 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:00:24,923 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:00:24,924 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:00:24,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:00:24,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:00:24,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:00:25,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:00:25,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:00:25,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:00:25,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:00:25,219 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:00:25,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2024-06-27 23:00:26,464 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:00:26,729 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:00:26,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2024-06-27 23:00:26,745 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c85594b2/52325ed015d246988b581c561c9ef1e8/FLAG86926de29 [2024-06-27 23:00:26,758 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c85594b2/52325ed015d246988b581c561c9ef1e8 [2024-06-27 23:00:26,761 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:00:26,761 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:00:26,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe010_tso.yml/witness.yml [2024-06-27 23:00:26,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:00:26,828 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:00:26,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:00:26,829 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:00:26,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:00:26,834 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:00:26" (1/2) ... [2024-06-27 23:00:26,835 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610c1a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:26, skipping insertion in model container [2024-06-27 23:00:26,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:00:26" (1/2) ... [2024-06-27 23:00:26,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@40bdfddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:00:26, skipping insertion in model container [2024-06-27 23:00:26,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:00:26" (2/2) ... [2024-06-27 23:00:26,840 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610c1a50 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:26, skipping insertion in model container [2024-06-27 23:00:26,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:00:26" (2/2) ... [2024-06-27 23:00:26,842 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:00:26,875 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:00:26,876 INFO L97 edCorrectnessWitness]: Location invariant before [L762-L762] ! multithreaded || ((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (3LL - (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) [2024-06-27 23:00:26,876 INFO L97 edCorrectnessWitness]: Location invariant before [L761-L761] ! multithreaded || ((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (3LL - (long long )__unbuffered_p1_EAX) - (long long )y >= 0LL) [2024-06-27 23:00:26,877 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:00:26,877 INFO L106 edCorrectnessWitness]: ghost_update [L759-L759] multithreaded = 1; [2024-06-27 23:00:26,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:00:27,246 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:00:27,262 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:00:27,356 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:00:27,397 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:00:27,398 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27 WrapperNode [2024-06-27 23:00:27,398 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:00:27,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:00:27,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:00:27,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:00:27,407 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 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,438 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 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,467 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2024-06-27 23:00:27,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:00:27,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:00:27,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:00:27,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:00:27,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,509 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]. [2024-06-27 23:00:27,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,524 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:00:27,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:00:27,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:00:27,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:00:27,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (1/1) ... [2024-06-27 23:00:27,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:00:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:00:27,574 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) [2024-06-27 23:00:27,592 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 [2024-06-27 23:00:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:00:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:00:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:00:27,614 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:00:27,614 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:00:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:00:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:00:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:00:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:00:27,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:00:27,617 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:00:27,757 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:00:27,759 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:00:27,908 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:00:27,908 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:00:27,978 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:00:27,978 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:00:27,978 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:00:27 BoogieIcfgContainer [2024-06-27 23:00:27,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:00:27,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:00:27,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:00:27,984 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:00:27,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:00:26" (1/4) ... [2024-06-27 23:00:27,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544b03b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:00:27, skipping insertion in model container [2024-06-27 23:00:27,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:00:26" (2/4) ... [2024-06-27 23:00:27,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544b03b2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:00:27, skipping insertion in model container [2024-06-27 23:00:27,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:00:27" (3/4) ... [2024-06-27 23:00:27,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544b03b2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:00:27, skipping insertion in model container [2024-06-27 23:00:27,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:00:27" (4/4) ... [2024-06-27 23:00:27,987 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2024-06-27 23:00:28,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:00:28,003 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:00:28,003 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:00:28,039 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:00:28,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-27 23:00:28,097 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-27 23:00:28,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:00:28,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:00:28,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-27 23:00:28,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-27 23:00:28,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:00:28,119 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;@1cdf1b25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:00:28,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:00:28,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:00:28,124 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:00:28,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:00:28,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:28,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:00:28,125 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)] === [2024-06-27 23:00:28,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:28,130 INFO L85 PathProgramCache]: Analyzing trace with hash 186759909, now seen corresponding path program 1 times [2024-06-27 23:00:28,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:28,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611822663] [2024-06-27 23:00:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:28,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:28,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:28,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611822663] [2024-06-27 23:00:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611822663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:28,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:28,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:00:28,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349973318] [2024-06-27 23:00:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:28,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:00:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:00:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:00:28,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-06-27 23:00:28,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:28,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:28,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-06-27 23:00:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:28,734 INFO L124 PetriNetUnfolderBase]: 87/183 cut-off events. [2024-06-27 23:00:28,734 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 23:00:28,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 183 events. 87/183 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 672 event pairs, 47 based on Foata normal form. 1/171 useless extension candidates. Maximal degree in co-relation 354. Up to 161 conditions per place. [2024-06-27 23:00:28,739 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 18 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-27 23:00:28,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 105 flow [2024-06-27 23:00:28,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:00:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:00:28,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-06-27 23:00:28,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-06-27 23:00:28,753 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 59 transitions. [2024-06-27 23:00:28,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 105 flow [2024-06-27 23:00:28,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:00:28,758 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-27 23:00:28,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-27 23:00:28,765 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-27 23:00:28,766 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-27 23:00:28,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:28,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:28,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:00:28,767 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)] === [2024-06-27 23:00:28,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash -912341756, now seen corresponding path program 1 times [2024-06-27 23:00:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:28,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065407923] [2024-06-27 23:00:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:28,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065407923] [2024-06-27 23:00:28,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065407923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:28,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:28,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:00:28,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143856728] [2024-06-27 23:00:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:28,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:00:28,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:00:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:00:28,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-06-27 23:00:28,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:28,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:28,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-06-27 23:00:28,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:29,078 INFO L124 PetriNetUnfolderBase]: 88/185 cut-off events. [2024-06-27 23:00:29,082 INFO L125 PetriNetUnfolderBase]: For 36/39 co-relation queries the response was YES. [2024-06-27 23:00:29,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 185 events. 88/185 cut-off events. For 36/39 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 668 event pairs, 35 based on Foata normal form. 5/186 useless extension candidates. Maximal degree in co-relation 413. Up to 142 conditions per place. [2024-06-27 23:00:29,085 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 24 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-27 23:00:29,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 171 flow [2024-06-27 23:00:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:00:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:00:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-06-27 23:00:29,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6982758620689655 [2024-06-27 23:00:29,087 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 81 transitions. [2024-06-27 23:00:29,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 171 flow [2024-06-27 23:00:29,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:00:29,089 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 119 flow [2024-06-27 23:00:29,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-06-27 23:00:29,090 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-06-27 23:00:29,091 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 119 flow [2024-06-27 23:00:29,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:29,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:29,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:29,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:00:29,092 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)] === [2024-06-27 23:00:29,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:29,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1782177076, now seen corresponding path program 1 times [2024-06-27 23:00:29,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:29,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131993715] [2024-06-27 23:00:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:29,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131993715] [2024-06-27 23:00:29,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131993715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:29,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:29,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:00:29,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568203359] [2024-06-27 23:00:29,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:29,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:00:29,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:29,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:00:29,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:00:29,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:29,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:29,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:29,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:29,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:29,467 INFO L124 PetriNetUnfolderBase]: 103/215 cut-off events. [2024-06-27 23:00:29,467 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-06-27 23:00:29,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 215 events. 103/215 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 770 event pairs, 29 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 585. Up to 171 conditions per place. [2024-06-27 23:00:29,473 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 35 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2024-06-27 23:00:29,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 254 flow [2024-06-27 23:00:29,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:29,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 23:00:29,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6275862068965518 [2024-06-27 23:00:29,478 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 119 flow. Second operand 5 states and 91 transitions. [2024-06-27 23:00:29,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 254 flow [2024-06-27 23:00:29,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 252 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 23:00:29,484 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 173 flow [2024-06-27 23:00:29,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-06-27 23:00:29,485 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2024-06-27 23:00:29,486 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 173 flow [2024-06-27 23:00:29,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:29,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:29,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:00:29,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:00:29,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1019765965, now seen corresponding path program 1 times [2024-06-27 23:00:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:29,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701079745] [2024-06-27 23:00:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:29,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:29,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:29,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701079745] [2024-06-27 23:00:29,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701079745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:29,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:29,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67992941] [2024-06-27 23:00:29,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:29,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:29,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:29,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:29,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:29,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:29,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:29,808 INFO L124 PetriNetUnfolderBase]: 99/207 cut-off events. [2024-06-27 23:00:29,809 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-06-27 23:00:29,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 207 events. 99/207 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 730 event pairs, 13 based on Foata normal form. 4/209 useless extension candidates. Maximal degree in co-relation 642. Up to 145 conditions per place. [2024-06-27 23:00:29,811 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 35 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-27 23:00:29,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 285 flow [2024-06-27 23:00:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-27 23:00:29,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5919540229885057 [2024-06-27 23:00:29,813 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 173 flow. Second operand 6 states and 103 transitions. [2024-06-27 23:00:29,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 285 flow [2024-06-27 23:00:29,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 285 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 23:00:29,816 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 185 flow [2024-06-27 23:00:29,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-27 23:00:29,818 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-27 23:00:29,819 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 185 flow [2024-06-27 23:00:29,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:29,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:29,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:29,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:00:29,820 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)] === [2024-06-27 23:00:29,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2113222050, now seen corresponding path program 1 times [2024-06-27 23:00:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:29,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100664644] [2024-06-27 23:00:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:29,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:29,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:29,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100664644] [2024-06-27 23:00:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100664644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:00:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405871736] [2024-06-27 23:00:29,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:29,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:00:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:00:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:00:30,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:30,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:30,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:30,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:30,048 INFO L124 PetriNetUnfolderBase]: 94/197 cut-off events. [2024-06-27 23:00:30,049 INFO L125 PetriNetUnfolderBase]: For 405/408 co-relation queries the response was YES. [2024-06-27 23:00:30,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 197 events. 94/197 cut-off events. For 405/408 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 699 event pairs, 30 based on Foata normal form. 4/198 useless extension candidates. Maximal degree in co-relation 649. Up to 147 conditions per place. [2024-06-27 23:00:30,051 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 9 changer transitions 0/39 dead transitions. [2024-06-27 23:00:30,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 265 flow [2024-06-27 23:00:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:00:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:00:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-27 23:00:30,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6293103448275862 [2024-06-27 23:00:30,054 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 185 flow. Second operand 4 states and 73 transitions. [2024-06-27 23:00:30,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 265 flow [2024-06-27 23:00:30,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 244 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:30,059 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 189 flow [2024-06-27 23:00:30,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=189, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-06-27 23:00:30,062 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-06-27 23:00:30,065 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 189 flow [2024-06-27 23:00:30,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:30,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:30,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:00:30,070 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)] === [2024-06-27 23:00:30,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash -352774969, now seen corresponding path program 1 times [2024-06-27 23:00:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:30,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320475619] [2024-06-27 23:00:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:30,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:30,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320475619] [2024-06-27 23:00:30,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320475619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:30,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:30,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:30,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913614524] [2024-06-27 23:00:30,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:30,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:30,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:30,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:30,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:30,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:30,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:30,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:30,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:30,321 INFO L124 PetriNetUnfolderBase]: 102/213 cut-off events. [2024-06-27 23:00:30,322 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-27 23:00:30,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 213 events. 102/213 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 767 event pairs, 25 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 707. Up to 131 conditions per place. [2024-06-27 23:00:30,324 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-27 23:00:30,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 56 transitions, 379 flow [2024-06-27 23:00:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-27 23:00:30,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6494252873563219 [2024-06-27 23:00:30,325 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 189 flow. Second operand 6 states and 113 transitions. [2024-06-27 23:00:30,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 56 transitions, 379 flow [2024-06-27 23:00:30,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 357 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 23:00:30,328 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 246 flow [2024-06-27 23:00:30,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-06-27 23:00:30,329 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 19 predicate places. [2024-06-27 23:00:30,329 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 246 flow [2024-06-27 23:00:30,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:30,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:00:30,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:00:30,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -890493847, now seen corresponding path program 2 times [2024-06-27 23:00:30,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:30,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077620304] [2024-06-27 23:00:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:30,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:30,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077620304] [2024-06-27 23:00:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077620304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:30,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:30,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:30,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401281030] [2024-06-27 23:00:30,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:30,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:30,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:30,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:30,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:30,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:30,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:30,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:30,595 INFO L124 PetriNetUnfolderBase]: 108/226 cut-off events. [2024-06-27 23:00:30,596 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2024-06-27 23:00:30,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 226 events. 108/226 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 846 event pairs, 25 based on Foata normal form. 1/224 useless extension candidates. Maximal degree in co-relation 825. Up to 164 conditions per place. [2024-06-27 23:00:30,598 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 35 selfloop transitions, 15 changer transitions 0/55 dead transitions. [2024-06-27 23:00:30,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 402 flow [2024-06-27 23:00:30,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 23:00:30,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-06-27 23:00:30,600 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 246 flow. Second operand 6 states and 105 transitions. [2024-06-27 23:00:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 402 flow [2024-06-27 23:00:30,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 55 transitions, 385 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 23:00:30,605 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 300 flow [2024-06-27 23:00:30,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 23:00:30,606 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-27 23:00:30,607 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 300 flow [2024-06-27 23:00:30,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:30,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:30,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:00:30,608 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)] === [2024-06-27 23:00:30,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1296369849, now seen corresponding path program 3 times [2024-06-27 23:00:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112876950] [2024-06-27 23:00:30,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:30,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112876950] [2024-06-27 23:00:30,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112876950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:30,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:30,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:30,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612639359] [2024-06-27 23:00:30,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:30,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:30,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:30,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:30,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:30,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:30,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:30,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:30,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:30,873 INFO L124 PetriNetUnfolderBase]: 109/230 cut-off events. [2024-06-27 23:00:30,873 INFO L125 PetriNetUnfolderBase]: For 758/758 co-relation queries the response was YES. [2024-06-27 23:00:30,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 230 events. 109/230 cut-off events. For 758/758 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 869 event pairs, 25 based on Foata normal form. 2/229 useless extension candidates. Maximal degree in co-relation 875. Up to 143 conditions per place. [2024-06-27 23:00:30,875 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 35 selfloop transitions, 21 changer transitions 0/61 dead transitions. [2024-06-27 23:00:30,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 472 flow [2024-06-27 23:00:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:30,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-27 23:00:30,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6379310344827587 [2024-06-27 23:00:30,877 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 300 flow. Second operand 6 states and 111 transitions. [2024-06-27 23:00:30,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 472 flow [2024-06-27 23:00:30,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 435 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:00:30,881 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 338 flow [2024-06-27 23:00:30,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-27 23:00:30,882 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-06-27 23:00:30,882 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 338 flow [2024-06-27 23:00:30,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:30,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:30,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:30,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:00:30,883 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)] === [2024-06-27 23:00:30,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1296123585, now seen corresponding path program 1 times [2024-06-27 23:00:30,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:30,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325388032] [2024-06-27 23:00:30,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:30,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325388032] [2024-06-27 23:00:30,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325388032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:30,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:30,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500011126] [2024-06-27 23:00:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:31,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:31,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:31,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:31,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:31,099 INFO L124 PetriNetUnfolderBase]: 110/235 cut-off events. [2024-06-27 23:00:31,099 INFO L125 PetriNetUnfolderBase]: For 1064/1067 co-relation queries the response was YES. [2024-06-27 23:00:31,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 235 events. 110/235 cut-off events. For 1064/1067 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 899 event pairs, 29 based on Foata normal form. 6/238 useless extension candidates. Maximal degree in co-relation 925. Up to 160 conditions per place. [2024-06-27 23:00:31,102 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 37 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-06-27 23:00:31,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 458 flow [2024-06-27 23:00:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-27 23:00:31,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 23:00:31,103 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 338 flow. Second operand 5 states and 87 transitions. [2024-06-27 23:00:31,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 458 flow [2024-06-27 23:00:31,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 417 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:31,107 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 334 flow [2024-06-27 23:00:31,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-27 23:00:31,108 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 29 predicate places. [2024-06-27 23:00:31,108 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 334 flow [2024-06-27 23:00:31,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:31,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:31,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:00:31,109 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)] === [2024-06-27 23:00:31,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1948878595, now seen corresponding path program 1 times [2024-06-27 23:00:31,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:31,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048737218] [2024-06-27 23:00:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:31,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:31,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:31,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:31,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048737218] [2024-06-27 23:00:31,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048737218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:31,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:31,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:31,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277302329] [2024-06-27 23:00:31,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:31,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:31,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:31,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:31,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:31,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:31,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:31,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:31,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:31,307 INFO L124 PetriNetUnfolderBase]: 108/230 cut-off events. [2024-06-27 23:00:31,308 INFO L125 PetriNetUnfolderBase]: For 885/888 co-relation queries the response was YES. [2024-06-27 23:00:31,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 230 events. 108/230 cut-off events. For 885/888 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 872 event pairs, 30 based on Foata normal form. 3/230 useless extension candidates. Maximal degree in co-relation 898. Up to 137 conditions per place. [2024-06-27 23:00:31,310 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 36 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-06-27 23:00:31,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 484 flow [2024-06-27 23:00:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 23:00:31,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-06-27 23:00:31,312 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 334 flow. Second operand 6 states and 106 transitions. [2024-06-27 23:00:31,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 484 flow [2024-06-27 23:00:31,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 447 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:31,317 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 338 flow [2024-06-27 23:00:31,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-27 23:00:31,319 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2024-06-27 23:00:31,319 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 338 flow [2024-06-27 23:00:31,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:31,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:31,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:00:31,321 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)] === [2024-06-27 23:00:31,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2084076081, now seen corresponding path program 2 times [2024-06-27 23:00:31,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:31,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385166597] [2024-06-27 23:00:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:31,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:31,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:31,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385166597] [2024-06-27 23:00:31,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385166597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946309628] [2024-06-27 23:00:31,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:31,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:31,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:31,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:31,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:31,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:31,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:31,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:31,555 INFO L124 PetriNetUnfolderBase]: 111/237 cut-off events. [2024-06-27 23:00:31,556 INFO L125 PetriNetUnfolderBase]: For 1054/1057 co-relation queries the response was YES. [2024-06-27 23:00:31,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 237 events. 111/237 cut-off events. For 1054/1057 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 919 event pairs, 28 based on Foata normal form. 3/237 useless extension candidates. Maximal degree in co-relation 931. Up to 147 conditions per place. [2024-06-27 23:00:31,558 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 35 selfloop transitions, 22 changer transitions 0/62 dead transitions. [2024-06-27 23:00:31,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 516 flow [2024-06-27 23:00:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 23:00:31,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960591133004927 [2024-06-27 23:00:31,560 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 338 flow. Second operand 7 states and 121 transitions. [2024-06-27 23:00:31,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 516 flow [2024-06-27 23:00:31,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 448 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:00:31,565 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 337 flow [2024-06-27 23:00:31,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-27 23:00:31,566 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2024-06-27 23:00:31,566 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 337 flow [2024-06-27 23:00:31,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:31,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:31,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:00:31,567 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)] === [2024-06-27 23:00:31,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2084081661, now seen corresponding path program 3 times [2024-06-27 23:00:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:31,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183514449] [2024-06-27 23:00:31,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:31,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:31,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183514449] [2024-06-27 23:00:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183514449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:31,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946704893] [2024-06-27 23:00:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:31,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:31,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:31,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:31,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:31,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:31,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:31,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:31,791 INFO L124 PetriNetUnfolderBase]: 109/234 cut-off events. [2024-06-27 23:00:31,792 INFO L125 PetriNetUnfolderBase]: For 1028/1031 co-relation queries the response was YES. [2024-06-27 23:00:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 234 events. 109/234 cut-off events. For 1028/1031 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 900 event pairs, 30 based on Foata normal form. 3/234 useless extension candidates. Maximal degree in co-relation 905. Up to 145 conditions per place. [2024-06-27 23:00:31,794 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 36 selfloop transitions, 18 changer transitions 0/59 dead transitions. [2024-06-27 23:00:31,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 467 flow [2024-06-27 23:00:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:31,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:31,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 23:00:31,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6275862068965518 [2024-06-27 23:00:31,796 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 337 flow. Second operand 5 states and 91 transitions. [2024-06-27 23:00:31,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 467 flow [2024-06-27 23:00:31,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 419 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:31,801 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 331 flow [2024-06-27 23:00:31,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-27 23:00:31,802 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2024-06-27 23:00:31,803 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 331 flow [2024-06-27 23:00:31,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:31,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:31,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:31,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:00:31,804 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)] === [2024-06-27 23:00:31,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:31,804 INFO L85 PathProgramCache]: Analyzing trace with hash 285572008, now seen corresponding path program 1 times [2024-06-27 23:00:31,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:31,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727001293] [2024-06-27 23:00:31,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:31,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:31,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:31,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727001293] [2024-06-27 23:00:31,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727001293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:31,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:31,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:31,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109789594] [2024-06-27 23:00:31,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:31,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:31,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:31,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:31,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:31,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:31,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:32,053 INFO L124 PetriNetUnfolderBase]: 135/284 cut-off events. [2024-06-27 23:00:32,054 INFO L125 PetriNetUnfolderBase]: For 1698/1698 co-relation queries the response was YES. [2024-06-27 23:00:32,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 284 events. 135/284 cut-off events. For 1698/1698 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1151 event pairs, 25 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 1137. Up to 104 conditions per place. [2024-06-27 23:00:32,056 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 38 selfloop transitions, 28 changer transitions 0/71 dead transitions. [2024-06-27 23:00:32,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 547 flow [2024-06-27 23:00:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 23:00:32,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6305418719211823 [2024-06-27 23:00:32,058 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 331 flow. Second operand 7 states and 128 transitions. [2024-06-27 23:00:32,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 547 flow [2024-06-27 23:00:32,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 71 transitions, 511 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:32,063 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 363 flow [2024-06-27 23:00:32,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=363, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-27 23:00:32,064 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2024-06-27 23:00:32,064 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 363 flow [2024-06-27 23:00:32,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:32,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:32,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:32,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:00:32,065 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)] === [2024-06-27 23:00:32,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1181367290, now seen corresponding path program 2 times [2024-06-27 23:00:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:32,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259384533] [2024-06-27 23:00:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:32,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:32,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:32,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259384533] [2024-06-27 23:00:32,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259384533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:32,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:32,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285808131] [2024-06-27 23:00:32,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:32,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:32,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 363 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:32,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:32,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:32,320 INFO L124 PetriNetUnfolderBase]: 139/292 cut-off events. [2024-06-27 23:00:32,320 INFO L125 PetriNetUnfolderBase]: For 2015/2015 co-relation queries the response was YES. [2024-06-27 23:00:32,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 292 events. 139/292 cut-off events. For 2015/2015 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1201 event pairs, 36 based on Foata normal form. 2/289 useless extension candidates. Maximal degree in co-relation 1224. Up to 195 conditions per place. [2024-06-27 23:00:32,323 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 35 selfloop transitions, 27 changer transitions 0/67 dead transitions. [2024-06-27 23:00:32,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 533 flow [2024-06-27 23:00:32,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 23:00:32,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157635467980296 [2024-06-27 23:00:32,325 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 363 flow. Second operand 7 states and 125 transitions. [2024-06-27 23:00:32,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 533 flow [2024-06-27 23:00:32,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 479 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 23:00:32,332 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 379 flow [2024-06-27 23:00:32,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-06-27 23:00:32,333 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2024-06-27 23:00:32,333 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 379 flow [2024-06-27 23:00:32,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:32,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:32,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:32,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:00:32,334 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)] === [2024-06-27 23:00:32,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:32,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1339265732, now seen corresponding path program 3 times [2024-06-27 23:00:32,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:32,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132620001] [2024-06-27 23:00:32,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:32,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:32,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:32,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132620001] [2024-06-27 23:00:32,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132620001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:32,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:32,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:32,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025398799] [2024-06-27 23:00:32,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:32,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:32,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:32,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:32,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:32,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:32,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:32,615 INFO L124 PetriNetUnfolderBase]: 143/302 cut-off events. [2024-06-27 23:00:32,616 INFO L125 PetriNetUnfolderBase]: For 2370/2370 co-relation queries the response was YES. [2024-06-27 23:00:32,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1314 conditions, 302 events. 143/302 cut-off events. For 2370/2370 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1258 event pairs, 33 based on Foata normal form. 2/301 useless extension candidates. Maximal degree in co-relation 1283. Up to 232 conditions per place. [2024-06-27 23:00:32,620 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 44 selfloop transitions, 16 changer transitions 0/65 dead transitions. [2024-06-27 23:00:32,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 538 flow [2024-06-27 23:00:32,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:32,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 23:00:32,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-06-27 23:00:32,622 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 379 flow. Second operand 7 states and 119 transitions. [2024-06-27 23:00:32,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 538 flow [2024-06-27 23:00:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 480 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:32,630 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 370 flow [2024-06-27 23:00:32,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-27 23:00:32,631 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2024-06-27 23:00:32,631 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 370 flow [2024-06-27 23:00:32,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:32,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:32,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:32,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:00:32,632 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)] === [2024-06-27 23:00:32,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:32,633 INFO L85 PathProgramCache]: Analyzing trace with hash -2066990596, now seen corresponding path program 4 times [2024-06-27 23:00:32,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:32,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960827125] [2024-06-27 23:00:32,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:32,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:32,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:32,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960827125] [2024-06-27 23:00:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960827125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:32,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:32,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478469042] [2024-06-27 23:00:32,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:32,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:32,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:32,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:32,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:32,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:32,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:32,935 INFO L124 PetriNetUnfolderBase]: 130/279 cut-off events. [2024-06-27 23:00:32,935 INFO L125 PetriNetUnfolderBase]: For 2413/2413 co-relation queries the response was YES. [2024-06-27 23:00:32,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 279 events. 130/279 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1165 event pairs, 13 based on Foata normal form. 10/286 useless extension candidates. Maximal degree in co-relation 1072. Up to 130 conditions per place. [2024-06-27 23:00:32,937 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 37 selfloop transitions, 25 changer transitions 4/71 dead transitions. [2024-06-27 23:00:32,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 71 transitions, 552 flow [2024-06-27 23:00:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 23:00:32,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625615763546798 [2024-06-27 23:00:32,939 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 370 flow. Second operand 7 states and 127 transitions. [2024-06-27 23:00:32,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 71 transitions, 552 flow [2024-06-27 23:00:32,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 510 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:32,945 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 380 flow [2024-06-27 23:00:32,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=380, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-06-27 23:00:32,945 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2024-06-27 23:00:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 380 flow [2024-06-27 23:00:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 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) [2024-06-27 23:00:32,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:32,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:32,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:00:32,946 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)] === [2024-06-27 23:00:32,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash -34530048, now seen corresponding path program 1 times [2024-06-27 23:00:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:32,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208642146] [2024-06-27 23:00:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:32,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:33,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:33,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:33,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208642146] [2024-06-27 23:00:33,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208642146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:33,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:33,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:33,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883343925] [2024-06-27 23:00:33,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:33,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:33,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:33,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:33,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:33,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:33,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:33,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:33,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:33,146 INFO L124 PetriNetUnfolderBase]: 128/277 cut-off events. [2024-06-27 23:00:33,146 INFO L125 PetriNetUnfolderBase]: For 1826/1826 co-relation queries the response was YES. [2024-06-27 23:00:33,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 277 events. 128/277 cut-off events. For 1826/1826 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1152 event pairs, 26 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 1089. Up to 210 conditions per place. [2024-06-27 23:00:33,148 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 45 selfloop transitions, 13 changer transitions 0/63 dead transitions. [2024-06-27 23:00:33,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 63 transitions, 526 flow [2024-06-27 23:00:33,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:33,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 23:00:33,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6275862068965518 [2024-06-27 23:00:33,150 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 380 flow. Second operand 5 states and 91 transitions. [2024-06-27 23:00:33,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 63 transitions, 526 flow [2024-06-27 23:00:33,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 466 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:00:33,156 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 358 flow [2024-06-27 23:00:33,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-27 23:00:33,157 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2024-06-27 23:00:33,157 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 358 flow [2024-06-27 23:00:33,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:33,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:33,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:00:33,158 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)] === [2024-06-27 23:00:33,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash -34233378, now seen corresponding path program 2 times [2024-06-27 23:00:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:33,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633186861] [2024-06-27 23:00:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:33,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:33,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633186861] [2024-06-27 23:00:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633186861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:33,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:33,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:00:33,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107720684] [2024-06-27 23:00:33,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:33,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:00:33,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:00:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:00:33,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:33,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 358 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:33,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:33,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:33,358 INFO L124 PetriNetUnfolderBase]: 125/274 cut-off events. [2024-06-27 23:00:33,358 INFO L125 PetriNetUnfolderBase]: For 1414/1417 co-relation queries the response was YES. [2024-06-27 23:00:33,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 274 events. 125/274 cut-off events. For 1414/1417 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1145 event pairs, 30 based on Foata normal form. 4/275 useless extension candidates. Maximal degree in co-relation 1004. Up to 185 conditions per place. [2024-06-27 23:00:33,361 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 45 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2024-06-27 23:00:33,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 488 flow [2024-06-27 23:00:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:00:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:00:33,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-27 23:00:33,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-06-27 23:00:33,362 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 358 flow. Second operand 5 states and 85 transitions. [2024-06-27 23:00:33,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 488 flow [2024-06-27 23:00:33,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 61 transitions, 460 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 23:00:33,369 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 356 flow [2024-06-27 23:00:33,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=356, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-06-27 23:00:33,370 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 42 predicate places. [2024-06-27 23:00:33,370 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 356 flow [2024-06-27 23:00:33,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:33,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:33,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:00:33,371 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)] === [2024-06-27 23:00:33,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:33,371 INFO L85 PathProgramCache]: Analyzing trace with hash 177894052, now seen corresponding path program 1 times [2024-06-27 23:00:33,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:33,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369536710] [2024-06-27 23:00:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:33,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:33,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:33,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369536710] [2024-06-27 23:00:33,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369536710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:33,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:33,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:33,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17436167] [2024-06-27 23:00:33,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:33,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:33,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:33,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:33,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:33,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:33,615 INFO L124 PetriNetUnfolderBase]: 148/331 cut-off events. [2024-06-27 23:00:33,615 INFO L125 PetriNetUnfolderBase]: For 2722/2725 co-relation queries the response was YES. [2024-06-27 23:00:33,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 331 events. 148/331 cut-off events. For 2722/2725 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1481 event pairs, 41 based on Foata normal form. 8/336 useless extension candidates. Maximal degree in co-relation 1229. Up to 128 conditions per place. [2024-06-27 23:00:33,617 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 39 selfloop transitions, 16 changer transitions 12/72 dead transitions. [2024-06-27 23:00:33,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 570 flow [2024-06-27 23:00:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 23:00:33,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6009852216748769 [2024-06-27 23:00:33,619 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 356 flow. Second operand 7 states and 122 transitions. [2024-06-27 23:00:33,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 570 flow [2024-06-27 23:00:33,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 544 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 23:00:33,625 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 343 flow [2024-06-27 23:00:33,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2024-06-27 23:00:33,626 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 46 predicate places. [2024-06-27 23:00:33,626 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 343 flow [2024-06-27 23:00:33,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:33,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:33,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:00:33,627 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)] === [2024-06-27 23:00:33,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:33,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1485036200, now seen corresponding path program 2 times [2024-06-27 23:00:33,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:33,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525561265] [2024-06-27 23:00:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:33,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:33,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:33,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525561265] [2024-06-27 23:00:33,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525561265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:33,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:33,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:33,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928833919] [2024-06-27 23:00:33,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:33,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:33,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:33,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:33,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:33,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:33,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:33,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:33,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:33,826 INFO L124 PetriNetUnfolderBase]: 136/307 cut-off events. [2024-06-27 23:00:33,826 INFO L125 PetriNetUnfolderBase]: For 3302/3305 co-relation queries the response was YES. [2024-06-27 23:00:33,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 307 events. 136/307 cut-off events. For 3302/3305 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1386 event pairs, 47 based on Foata normal form. 10/314 useless extension candidates. Maximal degree in co-relation 1160. Up to 178 conditions per place. [2024-06-27 23:00:33,829 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 33 selfloop transitions, 15 changer transitions 9/62 dead transitions. [2024-06-27 23:00:33,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 491 flow [2024-06-27 23:00:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-27 23:00:33,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763546798029556 [2024-06-27 23:00:33,831 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 343 flow. Second operand 7 states and 117 transitions. [2024-06-27 23:00:33,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 491 flow [2024-06-27 23:00:33,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 453 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:00:33,839 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 321 flow [2024-06-27 23:00:33,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=321, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2024-06-27 23:00:33,839 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2024-06-27 23:00:33,840 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 321 flow [2024-06-27 23:00:33,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:33,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:33,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:00:33,841 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)] === [2024-06-27 23:00:33,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash -593009364, now seen corresponding path program 3 times [2024-06-27 23:00:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:33,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912484198] [2024-06-27 23:00:33,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:33,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:33,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912484198] [2024-06-27 23:00:33,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912484198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:33,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:33,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:33,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642920890] [2024-06-27 23:00:33,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:33,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:33,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:33,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:33,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:33,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:33,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:33,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:33,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:33,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:34,041 INFO L124 PetriNetUnfolderBase]: 127/292 cut-off events. [2024-06-27 23:00:34,041 INFO L125 PetriNetUnfolderBase]: For 2648/2651 co-relation queries the response was YES. [2024-06-27 23:00:34,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 292 events. 127/292 cut-off events. For 2648/2651 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1290 event pairs, 41 based on Foata normal form. 8/297 useless extension candidates. Maximal degree in co-relation 1077. Up to 168 conditions per place. [2024-06-27 23:00:34,044 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 28 selfloop transitions, 12 changer transitions 14/59 dead transitions. [2024-06-27 23:00:34,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 457 flow [2024-06-27 23:00:34,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:00:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:00:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 23:00:34,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665024630541872 [2024-06-27 23:00:34,045 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 321 flow. Second operand 7 states and 115 transitions. [2024-06-27 23:00:34,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 457 flow [2024-06-27 23:00:34,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 423 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 23:00:34,051 INFO L231 Difference]: Finished difference. Result has 69 places, 43 transitions, 283 flow [2024-06-27 23:00:34,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=69, PETRI_TRANSITIONS=43} [2024-06-27 23:00:34,052 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2024-06-27 23:00:34,052 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 43 transitions, 283 flow [2024-06-27 23:00:34,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:34,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:34,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:00:34,053 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)] === [2024-06-27 23:00:34,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1342334962, now seen corresponding path program 4 times [2024-06-27 23:00:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:34,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951862361] [2024-06-27 23:00:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:34,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:34,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951862361] [2024-06-27 23:00:34,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951862361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:34,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:34,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811346037] [2024-06-27 23:00:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:34,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:34,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:34,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:34,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 43 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:34,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:34,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:34,298 INFO L124 PetriNetUnfolderBase]: 120/269 cut-off events. [2024-06-27 23:00:34,299 INFO L125 PetriNetUnfolderBase]: For 2522/2530 co-relation queries the response was YES. [2024-06-27 23:00:34,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 269 events. 120/269 cut-off events. For 2522/2530 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1169 event pairs, 43 based on Foata normal form. 16/282 useless extension candidates. Maximal degree in co-relation 985. Up to 164 conditions per place. [2024-06-27 23:00:34,301 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 24 selfloop transitions, 15 changer transitions 9/53 dead transitions. [2024-06-27 23:00:34,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 53 transitions, 405 flow [2024-06-27 23:00:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:00:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:00:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 23:00:34,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2024-06-27 23:00:34,302 INFO L175 Difference]: Start difference. First operand has 69 places, 43 transitions, 283 flow. Second operand 8 states and 127 transitions. [2024-06-27 23:00:34,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 53 transitions, 405 flow [2024-06-27 23:00:34,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 373 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:00:34,308 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 265 flow [2024-06-27 23:00:34,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2024-06-27 23:00:34,308 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 37 predicate places. [2024-06-27 23:00:34,308 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 265 flow [2024-06-27 23:00:34,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:34,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:34,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:00:34,309 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)] === [2024-06-27 23:00:34,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:34,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1342119760, now seen corresponding path program 1 times [2024-06-27 23:00:34,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:34,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77315658] [2024-06-27 23:00:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:34,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:34,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77315658] [2024-06-27 23:00:34,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77315658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:34,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:34,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:34,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797696151] [2024-06-27 23:00:34,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:34,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:34,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:34,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:34,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:34,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:34,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:34,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:34,553 INFO L124 PetriNetUnfolderBase]: 126/289 cut-off events. [2024-06-27 23:00:34,553 INFO L125 PetriNetUnfolderBase]: For 2237/2245 co-relation queries the response was YES. [2024-06-27 23:00:34,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 289 events. 126/289 cut-off events. For 2237/2245 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1301 event pairs, 50 based on Foata normal form. 14/300 useless extension candidates. Maximal degree in co-relation 1055. Up to 131 conditions per place. [2024-06-27 23:00:34,555 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 28 selfloop transitions, 14 changer transitions 7/54 dead transitions. [2024-06-27 23:00:34,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 425 flow [2024-06-27 23:00:34,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:00:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:00:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 23:00:34,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560344827586207 [2024-06-27 23:00:34,557 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 265 flow. Second operand 8 states and 129 transitions. [2024-06-27 23:00:34,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 425 flow [2024-06-27 23:00:34,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 387 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:00:34,561 INFO L231 Difference]: Finished difference. Result has 63 places, 37 transitions, 245 flow [2024-06-27 23:00:34,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=245, PETRI_PLACES=63, PETRI_TRANSITIONS=37} [2024-06-27 23:00:34,562 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2024-06-27 23:00:34,562 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 37 transitions, 245 flow [2024-06-27 23:00:34,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:34,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:34,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:00:34,563 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)] === [2024-06-27 23:00:34,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:34,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1347691390, now seen corresponding path program 2 times [2024-06-27 23:00:34,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:34,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976985620] [2024-06-27 23:00:34,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:34,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:34,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:34,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976985620] [2024-06-27 23:00:34,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976985620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:34,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:34,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:34,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090072329] [2024-06-27 23:00:34,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:34,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:34,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:34,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 37 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:34,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:34,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:34,779 INFO L124 PetriNetUnfolderBase]: 99/232 cut-off events. [2024-06-27 23:00:34,780 INFO L125 PetriNetUnfolderBase]: For 1529/1537 co-relation queries the response was YES. [2024-06-27 23:00:34,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 232 events. 99/232 cut-off events. For 1529/1537 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 963 event pairs, 45 based on Foata normal form. 16/245 useless extension candidates. Maximal degree in co-relation 803. Up to 137 conditions per place. [2024-06-27 23:00:34,781 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 23 selfloop transitions, 7 changer transitions 10/45 dead transitions. [2024-06-27 23:00:34,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 45 transitions, 347 flow [2024-06-27 23:00:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-27 23:00:34,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-06-27 23:00:34,783 INFO L175 Difference]: Start difference. First operand has 63 places, 37 transitions, 245 flow. Second operand 6 states and 98 transitions. [2024-06-27 23:00:34,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 45 transitions, 347 flow [2024-06-27 23:00:34,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 45 transitions, 309 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:00:34,786 INFO L231 Difference]: Finished difference. Result has 60 places, 33 transitions, 195 flow [2024-06-27 23:00:34,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=60, PETRI_TRANSITIONS=33} [2024-06-27 23:00:34,787 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 32 predicate places. [2024-06-27 23:00:34,787 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 33 transitions, 195 flow [2024-06-27 23:00:34,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:34,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:34,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:00:34,788 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)] === [2024-06-27 23:00:34,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:34,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1347845212, now seen corresponding path program 5 times [2024-06-27 23:00:34,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:34,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403031231] [2024-06-27 23:00:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:34,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:34,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:34,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403031231] [2024-06-27 23:00:34,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403031231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:34,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:34,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:34,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759902059] [2024-06-27 23:00:34,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:34,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:34,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:34,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:34,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 33 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:34,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:34,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:34,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:35,019 INFO L124 PetriNetUnfolderBase]: 73/182 cut-off events. [2024-06-27 23:00:35,019 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2024-06-27 23:00:35,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 182 events. 73/182 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 662 event pairs, 28 based on Foata normal form. 6/185 useless extension candidates. Maximal degree in co-relation 570. Up to 62 conditions per place. [2024-06-27 23:00:35,021 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 16 selfloop transitions, 3 changer transitions 18/42 dead transitions. [2024-06-27 23:00:35,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 289 flow [2024-06-27 23:00:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-27 23:00:35,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-06-27 23:00:35,022 INFO L175 Difference]: Start difference. First operand has 60 places, 33 transitions, 195 flow. Second operand 6 states and 96 transitions. [2024-06-27 23:00:35,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 289 flow [2024-06-27 23:00:35,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 42 transitions, 271 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:00:35,025 INFO L231 Difference]: Finished difference. Result has 58 places, 23 transitions, 109 flow [2024-06-27 23:00:35,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=58, PETRI_TRANSITIONS=23} [2024-06-27 23:00:35,026 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 30 predicate places. [2024-06-27 23:00:35,026 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 23 transitions, 109 flow [2024-06-27 23:00:35,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:35,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:35,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:00:35,027 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)] === [2024-06-27 23:00:35,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:35,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1326931438, now seen corresponding path program 3 times [2024-06-27 23:00:35,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:35,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861649575] [2024-06-27 23:00:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:35,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:35,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861649575] [2024-06-27 23:00:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861649575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661028711] [2024-06-27 23:00:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:35,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:35,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:35,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:35,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 23 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:35,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:35,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:35,270 INFO L124 PetriNetUnfolderBase]: 42/109 cut-off events. [2024-06-27 23:00:35,270 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-27 23:00:35,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 109 events. 42/109 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 309 event pairs, 17 based on Foata normal form. 6/114 useless extension candidates. Maximal degree in co-relation 328. Up to 52 conditions per place. [2024-06-27 23:00:35,271 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 14 selfloop transitions, 2 changer transitions 10/31 dead transitions. [2024-06-27 23:00:35,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 31 transitions, 181 flow [2024-06-27 23:00:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-27 23:00:35,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2024-06-27 23:00:35,273 INFO L175 Difference]: Start difference. First operand has 58 places, 23 transitions, 109 flow. Second operand 6 states and 93 transitions. [2024-06-27 23:00:35,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 31 transitions, 181 flow [2024-06-27 23:00:35,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 31 transitions, 156 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:00:35,274 INFO L231 Difference]: Finished difference. Result has 45 places, 20 transitions, 78 flow [2024-06-27 23:00:35,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=45, PETRI_TRANSITIONS=20} [2024-06-27 23:00:35,275 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-27 23:00:35,275 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 20 transitions, 78 flow [2024-06-27 23:00:35,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:00:35,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:35,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:00:35,276 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)] === [2024-06-27 23:00:35,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:00:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1061234158, now seen corresponding path program 4 times [2024-06-27 23:00:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:00:35,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459092515] [2024-06-27 23:00:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:00:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:00:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:00:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:00:35,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:00:35,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459092515] [2024-06-27 23:00:35,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459092515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:00:35,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:00:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:00:35,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903338983] [2024-06-27 23:00:35,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:00:35,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:00:35,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:00:35,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:00:35,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:00:35,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 23:00:35,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 20 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:00:35,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 23:00:35,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:00:35,477 INFO L124 PetriNetUnfolderBase]: 20/59 cut-off events. [2024-06-27 23:00:35,477 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2024-06-27 23:00:35,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 59 events. 20/59 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 2 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 136. Up to 24 conditions per place. [2024-06-27 23:00:35,478 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-06-27 23:00:35,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 24 transitions, 108 flow [2024-06-27 23:00:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:00:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:00:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 23:00:35,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-06-27 23:00:35,479 INFO L175 Difference]: Start difference. First operand has 45 places, 20 transitions, 78 flow. Second operand 6 states and 86 transitions. [2024-06-27 23:00:35,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 24 transitions, 108 flow [2024-06-27 23:00:35,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 24 transitions, 92 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:00:35,480 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-27 23:00:35,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-27 23:00:35,481 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2024-06-27 23:00:35,481 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-27 23:00:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:00:35,484 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:00:35,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:00:35,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:00:35,485 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:00:35,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:00:35,486 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-06-27 23:00:35,489 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:00:35,489 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:00:35,493 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:00:35,493 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:00:35,494 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:00:35 BasicIcfg [2024-06-27 23:00:35,494 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:00:35,495 INFO L158 Benchmark]: Toolchain (without parser) took 8666.80ms. Allocated memory was 142.6MB in the beginning and 283.1MB in the end (delta: 140.5MB). Free memory was 68.9MB in the beginning and 163.4MB in the end (delta: -94.5MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2024-06-27 23:00:35,495 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:00:35,495 INFO L158 Benchmark]: Witness Parser took 3.31ms. Allocated memory is still 142.6MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:00:35,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.64ms. Allocated memory is still 142.6MB. Free memory was 68.7MB in the beginning and 93.8MB in the end (delta: -25.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-06-27 23:00:35,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.20ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 91.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:00:35,496 INFO L158 Benchmark]: Boogie Preprocessor took 67.82ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 23:00:35,496 INFO L158 Benchmark]: RCFGBuilder took 441.95ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 69.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 23:00:35,497 INFO L158 Benchmark]: TraceAbstraction took 7514.14ms. Allocated memory was 142.6MB in the beginning and 283.1MB in the end (delta: 140.5MB). Free memory was 68.6MB in the beginning and 163.4MB in the end (delta: -94.8MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2024-06-27 23:00:35,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 3.31ms. Allocated memory is still 142.6MB. Free memory is still 71.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 569.64ms. Allocated memory is still 142.6MB. Free memory was 68.7MB in the beginning and 93.8MB in the end (delta: -25.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.20ms. Allocated memory is still 142.6MB. Free memory was 93.5MB in the beginning and 91.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.82ms. Allocated memory is still 142.6MB. Free memory was 91.6MB in the beginning and 89.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 441.95ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 69.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7514.14ms. Allocated memory was 142.6MB in the beginning and 283.1MB in the end (delta: 140.5MB). Free memory was 68.6MB in the beginning and 163.4MB in the end (delta: -94.8MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 762]: 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, 46 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: 7.4s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1199 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 839 mSDsluCounter, 387 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 217 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3356 IncrementalHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 170 mSDtfsCounter, 3356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=16, InterpolantAutomatonStates: 162, 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, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 342 ConstructedInterpolants, 0 QuantifiedInterpolants, 2631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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! [2024-06-27 23:00:35,532 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