./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:44:04,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:44:04,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:44:04,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:44:04,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:44:04,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:44:04,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:44:04,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:44:04,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:44:04,819 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:44:04,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:44:04,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:44:04,821 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:44:04,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:44:04,823 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:44:04,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:44:04,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:44:04,826 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:44:04,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:44:04,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:44:04,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:44:04,827 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:44:04,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:44:04,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:44:04,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:44:04,828 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:44:04,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:44:04,828 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:44:04,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:44:04,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:44:04,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:44:04,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:44:04,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:44:04,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:44:04,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:44:04,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:44:04,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:44:04,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:44:04,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:44:04,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:44:04,832 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:44:04,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:44:04,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:44:04,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:44:05,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:44:05,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:44:05,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:44:05,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:44:05,075 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:44:05,075 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-31 16:44:06,264 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:44:06,480 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:44:06,481 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-31 16:44:06,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5a3a76c/d696bbe5d8854c079077a6b7e6efa0d8/FLAG3fec76ddb [2024-01-31 16:44:06,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5a3a76c/d696bbe5d8854c079077a6b7e6efa0d8 [2024-01-31 16:44:06,511 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:44:06,511 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:44:06,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-01-31 16:44:06,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:44:06,747 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:44:06,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:44:06,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:44:06,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:44:06,752 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:44:06" (1/2) ... [2024-01-31 16:44:06,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2fe7b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:44:06, skipping insertion in model container [2024-01-31 16:44:06,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:44:06" (1/2) ... [2024-01-31 16:44:06,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@50a27701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:44:06, skipping insertion in model container [2024-01-31 16:44:06,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:44:06" (2/2) ... [2024-01-31 16:44:06,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c2fe7b6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:06, skipping insertion in model container [2024-01-31 16:44:06,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:44:06" (2/2) ... [2024-01-31 16:44:06,757 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:44:07,110 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:44:07,112 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:44:07,112 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:44:07,161 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:44:07,277 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-01-31 16:44:07,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:44:07,447 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:44:07,456 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local [2024-01-31 16:44:07,482 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 16:44:07,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:44:07,532 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:44:07,534 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07 WrapperNode [2024-01-31 16:44:07,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:44:07,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:44:07,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:44:07,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:44:07,541 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 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,550 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 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,569 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-01-31 16:44:07,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:44:07,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:44:07,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:44:07,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:44:07,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,590 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 16:44:07,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:44:07,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:44:07,600 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:44:07,600 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:44:07,601 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (1/1) ... [2024-01-31 16:44:07,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:44:07,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:44:07,624 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) [2024-01-31 16:44:07,646 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 [2024-01-31 16:44:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:44:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:44:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:44:07,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:44:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:44:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:44:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:44:07,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:44:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:44:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:44:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:44:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:44:07,664 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 16:44:07,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 16:44:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:44:07,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:44:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:44:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:44:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:44:07,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:44:07,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:44:07,667 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:44:07,807 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:44:07,810 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:44:07,989 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:44:07,989 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:44:08,127 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:44:08,128 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:44:08,129 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:44:08 BoogieIcfgContainer [2024-01-31 16:44:08,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:44:08,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:44:08,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:44:08,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:44:08,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:44:06" (1/4) ... [2024-01-31 16:44:08,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2ebabe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:44:08, skipping insertion in model container [2024-01-31 16:44:08,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:44:06" (2/4) ... [2024-01-31 16:44:08,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2ebabe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:44:08, skipping insertion in model container [2024-01-31 16:44:08,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:07" (3/4) ... [2024-01-31 16:44:08,155 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2ebabe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:44:08, skipping insertion in model container [2024-01-31 16:44:08,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:44:08" (4/4) ... [2024-01-31 16:44:08,156 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-31 16:44:08,183 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:44:08,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:44:08,183 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:44:08,240 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:44:08,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2024-01-31 16:44:08,351 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-01-31 16:44:08,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:44:08,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-01-31 16:44:08,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2024-01-31 16:44:08,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-01-31 16:44:08,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:44:08,385 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;@69aa211f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:44:08,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:44:08,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:44:08,406 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-31 16:44:08,407 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:44:08,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:08,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:08,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:08,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2049445433, now seen corresponding path program 1 times [2024-01-31 16:44:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:08,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449167546] [2024-01-31 16:44:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:08,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:08,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449167546] [2024-01-31 16:44:08,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449167546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:08,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:08,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:44:08,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647439757] [2024-01-31 16:44:08,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:44:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:44:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:44:08,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:44:08,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-01-31 16:44:08,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:08,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:44:08,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:08,856 INFO L124 PetriNetUnfolderBase]: 75/203 cut-off events. [2024-01-31 16:44:08,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:44:08,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 203 events. 75/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1059 event pairs, 51 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 347. Up to 97 conditions per place. [2024-01-31 16:44:08,859 INFO L140 encePairwiseOnDemand]: 38/40 looper letters, 16 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-01-31 16:44:08,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 115 flow [2024-01-31 16:44:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:44:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:44:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-01-31 16:44:08,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-01-31 16:44:08,870 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 84 transitions. [2024-01-31 16:44:08,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 115 flow [2024-01-31 16:44:08,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:44:08,874 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 74 flow [2024-01-31 16:44:08,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-01-31 16:44:08,878 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2024-01-31 16:44:08,879 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 74 flow [2024-01-31 16:44:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2024-01-31 16:44:08,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:08,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:44:08,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:08,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash 891701219, now seen corresponding path program 1 times [2024-01-31 16:44:08,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:08,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581413316] [2024-01-31 16:44:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:09,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581413316] [2024-01-31 16:44:09,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581413316] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:09,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:09,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:44:09,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747252758] [2024-01-31 16:44:09,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:09,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:44:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:09,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:44:09,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:44:09,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-01-31 16:44:09,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:09,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:09,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-01-31 16:44:09,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:09,504 INFO L124 PetriNetUnfolderBase]: 1276/2422 cut-off events. [2024-01-31 16:44:09,505 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-01-31 16:44:09,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 2422 events. 1276/2422 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 17318 event pairs, 379 based on Foata normal form. 73/2444 useless extension candidates. Maximal degree in co-relation 4515. Up to 945 conditions per place. [2024-01-31 16:44:09,520 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 31 selfloop transitions, 6 changer transitions 35/85 dead transitions. [2024-01-31 16:44:09,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 85 transitions, 328 flow [2024-01-31 16:44:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:44:09,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:44:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-01-31 16:44:09,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-01-31 16:44:09,528 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 74 flow. Second operand 7 states and 186 transitions. [2024-01-31 16:44:09,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 85 transitions, 328 flow [2024-01-31 16:44:09,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 85 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:44:09,538 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 147 flow [2024-01-31 16:44:09,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=147, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2024-01-31 16:44:09,539 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-01-31 16:44:09,543 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 147 flow [2024-01-31 16:44:09,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:09,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:09,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:09,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:44:09,544 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:09,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:09,545 INFO L85 PathProgramCache]: Analyzing trace with hash 506723266, now seen corresponding path program 1 times [2024-01-31 16:44:09,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:09,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556804026] [2024-01-31 16:44:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:09,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:09,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556804026] [2024-01-31 16:44:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556804026] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:09,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:09,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:44:09,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542228417] [2024-01-31 16:44:09,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:09,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:09,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:09,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-01-31 16:44:09,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:09,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:09,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-01-31 16:44:09,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:09,982 INFO L124 PetriNetUnfolderBase]: 1050/2090 cut-off events. [2024-01-31 16:44:09,982 INFO L125 PetriNetUnfolderBase]: For 2441/2449 co-relation queries the response was YES. [2024-01-31 16:44:09,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 2090 events. 1050/2090 cut-off events. For 2441/2449 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14589 event pairs, 205 based on Foata normal form. 65/2120 useless extension candidates. Maximal degree in co-relation 5771. Up to 662 conditions per place. [2024-01-31 16:44:09,993 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 38 selfloop transitions, 7 changer transitions 52/110 dead transitions. [2024-01-31 16:44:09,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 110 transitions, 712 flow [2024-01-31 16:44:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:44:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:44:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-01-31 16:44:09,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6175 [2024-01-31 16:44:09,995 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 147 flow. Second operand 10 states and 247 transitions. [2024-01-31 16:44:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 110 transitions, 712 flow [2024-01-31 16:44:09,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 110 transitions, 664 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:44:10,000 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 213 flow [2024-01-31 16:44:10,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=213, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2024-01-31 16:44:10,001 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2024-01-31 16:44:10,001 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 213 flow [2024-01-31 16:44:10,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:10,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:10,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:10,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:44:10,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:10,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:10,003 INFO L85 PathProgramCache]: Analyzing trace with hash -913384790, now seen corresponding path program 1 times [2024-01-31 16:44:10,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:10,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189303519] [2024-01-31 16:44:10,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:10,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:10,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189303519] [2024-01-31 16:44:10,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189303519] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:10,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:10,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:44:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952098137] [2024-01-31 16:44:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:10,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-01-31 16:44:10,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:10,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:10,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-01-31 16:44:10,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:10,408 INFO L124 PetriNetUnfolderBase]: 845/1694 cut-off events. [2024-01-31 16:44:10,409 INFO L125 PetriNetUnfolderBase]: For 4252/4252 co-relation queries the response was YES. [2024-01-31 16:44:10,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5332 conditions, 1694 events. 845/1694 cut-off events. For 4252/4252 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11519 event pairs, 176 based on Foata normal form. 46/1699 useless extension candidates. Maximal degree in co-relation 5307. Up to 628 conditions per place. [2024-01-31 16:44:10,418 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 40 selfloop transitions, 11 changer transitions 40/104 dead transitions. [2024-01-31 16:44:10,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 738 flow [2024-01-31 16:44:10,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:44:10,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:44:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-01-31 16:44:10,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-01-31 16:44:10,420 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 213 flow. Second operand 10 states and 244 transitions. [2024-01-31 16:44:10,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 738 flow [2024-01-31 16:44:10,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 104 transitions, 685 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-01-31 16:44:10,429 INFO L231 Difference]: Finished difference. Result has 74 places, 46 transitions, 297 flow [2024-01-31 16:44:10,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=297, PETRI_PLACES=74, PETRI_TRANSITIONS=46} [2024-01-31 16:44:10,431 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-01-31 16:44:10,431 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 46 transitions, 297 flow [2024-01-31 16:44:10,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:10,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:10,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:10,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:44:10,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:10,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1980230019, now seen corresponding path program 1 times [2024-01-31 16:44:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440563035] [2024-01-31 16:44:10,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:10,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:10,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440563035] [2024-01-31 16:44:10,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440563035] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:10,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:10,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:44:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152117953] [2024-01-31 16:44:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:10,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:10,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:10,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-01-31 16:44:10,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 46 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:10,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:10,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-01-31 16:44:10,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:10,824 INFO L124 PetriNetUnfolderBase]: 709/1498 cut-off events. [2024-01-31 16:44:10,824 INFO L125 PetriNetUnfolderBase]: For 4281/4281 co-relation queries the response was YES. [2024-01-31 16:44:10,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4900 conditions, 1498 events. 709/1498 cut-off events. For 4281/4281 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10389 event pairs, 140 based on Foata normal form. 36/1497 useless extension candidates. Maximal degree in co-relation 4867. Up to 511 conditions per place. [2024-01-31 16:44:10,832 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 42 selfloop transitions, 14 changer transitions 32/101 dead transitions. [2024-01-31 16:44:10,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 788 flow [2024-01-31 16:44:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:44:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:44:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-01-31 16:44:10,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925 [2024-01-31 16:44:10,834 INFO L175 Difference]: Start difference. First operand has 74 places, 46 transitions, 297 flow. Second operand 10 states and 237 transitions. [2024-01-31 16:44:10,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 788 flow [2024-01-31 16:44:10,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 706 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-01-31 16:44:10,843 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 372 flow [2024-01-31 16:44:10,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2024-01-31 16:44:10,844 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 33 predicate places. [2024-01-31 16:44:10,844 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 372 flow [2024-01-31 16:44:10,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:10,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:10,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:10,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:44:10,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:10,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:10,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1134121081, now seen corresponding path program 1 times [2024-01-31 16:44:10,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:10,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563080507] [2024-01-31 16:44:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:10,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:10,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:10,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563080507] [2024-01-31 16:44:10,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563080507] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:10,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:10,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:44:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743899155] [2024-01-31 16:44:10,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:10,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:10,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:10,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:10,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:10,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-01-31 16:44:10,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:10,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:10,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-01-31 16:44:10,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:11,191 INFO L124 PetriNetUnfolderBase]: 617/1317 cut-off events. [2024-01-31 16:44:11,191 INFO L125 PetriNetUnfolderBase]: For 3839/3841 co-relation queries the response was YES. [2024-01-31 16:44:11,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 1317 events. 617/1317 cut-off events. For 3839/3841 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8734 event pairs, 118 based on Foata normal form. 16/1301 useless extension candidates. Maximal degree in co-relation 4508. Up to 457 conditions per place. [2024-01-31 16:44:11,216 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 46 selfloop transitions, 18 changer transitions 22/99 dead transitions. [2024-01-31 16:44:11,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 830 flow [2024-01-31 16:44:11,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:44:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:44:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 232 transitions. [2024-01-31 16:44:11,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-01-31 16:44:11,217 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 372 flow. Second operand 10 states and 232 transitions. [2024-01-31 16:44:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 830 flow [2024-01-31 16:44:11,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 765 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-01-31 16:44:11,238 INFO L231 Difference]: Finished difference. Result has 80 places, 54 transitions, 508 flow [2024-01-31 16:44:11,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2024-01-31 16:44:11,240 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 36 predicate places. [2024-01-31 16:44:11,240 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 508 flow [2024-01-31 16:44:11,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:11,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:11,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:11,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:44:11,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:11,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:11,241 INFO L85 PathProgramCache]: Analyzing trace with hash 552042686, now seen corresponding path program 1 times [2024-01-31 16:44:11,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:11,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145818436] [2024-01-31 16:44:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:11,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:11,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:11,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145818436] [2024-01-31 16:44:11,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145818436] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:11,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:11,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:44:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394168375] [2024-01-31 16:44:11,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:11,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:44:11,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:11,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:44:11,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:44:11,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-01-31 16:44:11,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:11,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:11,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-01-31 16:44:11,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:11,665 INFO L124 PetriNetUnfolderBase]: 988/1993 cut-off events. [2024-01-31 16:44:11,665 INFO L125 PetriNetUnfolderBase]: For 10578/10582 co-relation queries the response was YES. [2024-01-31 16:44:11,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7237 conditions, 1993 events. 988/1993 cut-off events. For 10578/10582 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13970 event pairs, 248 based on Foata normal form. 30/2002 useless extension candidates. Maximal degree in co-relation 7199. Up to 479 conditions per place. [2024-01-31 16:44:11,676 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 43 selfloop transitions, 9 changer transitions 47/111 dead transitions. [2024-01-31 16:44:11,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 1206 flow [2024-01-31 16:44:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:44:11,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:44:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2024-01-31 16:44:11,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-01-31 16:44:11,677 INFO L175 Difference]: Start difference. First operand has 80 places, 54 transitions, 508 flow. Second operand 9 states and 205 transitions. [2024-01-31 16:44:11,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 1206 flow [2024-01-31 16:44:11,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 1139 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-01-31 16:44:11,712 INFO L231 Difference]: Finished difference. Result has 79 places, 44 transitions, 354 flow [2024-01-31 16:44:11,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=354, PETRI_PLACES=79, PETRI_TRANSITIONS=44} [2024-01-31 16:44:11,713 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-01-31 16:44:11,713 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 44 transitions, 354 flow [2024-01-31 16:44:11,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:11,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:11,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:11,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:44:11,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:11,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:11,714 INFO L85 PathProgramCache]: Analyzing trace with hash 2029927328, now seen corresponding path program 1 times [2024-01-31 16:44:11,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:11,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840542867] [2024-01-31 16:44:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:11,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:11,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840542867] [2024-01-31 16:44:11,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840542867] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:11,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:11,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:44:11,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766266890] [2024-01-31 16:44:11,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:11,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:44:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:44:11,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:44:11,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:44:11,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 44 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:11,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:11,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:44:11,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:12,015 INFO L124 PetriNetUnfolderBase]: 592/1258 cut-off events. [2024-01-31 16:44:12,015 INFO L125 PetriNetUnfolderBase]: For 1480/1503 co-relation queries the response was YES. [2024-01-31 16:44:12,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2981 conditions, 1258 events. 592/1258 cut-off events. For 1480/1503 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8284 event pairs, 130 based on Foata normal form. 63/1275 useless extension candidates. Maximal degree in co-relation 2944. Up to 528 conditions per place. [2024-01-31 16:44:12,022 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 24 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-01-31 16:44:12,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 57 transitions, 440 flow [2024-01-31 16:44:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:44:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:44:12,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-01-31 16:44:12,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-01-31 16:44:12,033 INFO L175 Difference]: Start difference. First operand has 79 places, 44 transitions, 354 flow. Second operand 4 states and 119 transitions. [2024-01-31 16:44:12,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 57 transitions, 440 flow [2024-01-31 16:44:12,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 57 transitions, 378 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-01-31 16:44:12,038 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 330 flow [2024-01-31 16:44:12,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=330, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2024-01-31 16:44:12,039 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2024-01-31 16:44:12,039 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 330 flow [2024-01-31 16:44:12,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:12,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:12,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:44:12,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:12,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash -498819979, now seen corresponding path program 1 times [2024-01-31 16:44:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:12,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980128369] [2024-01-31 16:44:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:12,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:12,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:12,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980128369] [2024-01-31 16:44:12,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980128369] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:12,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:12,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:44:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886525510] [2024-01-31 16:44:12,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:12,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:44:12,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:44:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:44:12,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:44:12,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:12,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:44:12,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:12,243 INFO L124 PetriNetUnfolderBase]: 504/1047 cut-off events. [2024-01-31 16:44:12,243 INFO L125 PetriNetUnfolderBase]: For 810/1087 co-relation queries the response was YES. [2024-01-31 16:44:12,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1047 events. 504/1047 cut-off events. For 810/1087 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6244 event pairs, 47 based on Foata normal form. 62/1066 useless extension candidates. Maximal degree in co-relation 2665. Up to 424 conditions per place. [2024-01-31 16:44:12,247 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 29 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2024-01-31 16:44:12,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 455 flow [2024-01-31 16:44:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:44:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:44:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-01-31 16:44:12,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.745 [2024-01-31 16:44:12,249 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 330 flow. Second operand 5 states and 149 transitions. [2024-01-31 16:44:12,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 455 flow [2024-01-31 16:44:12,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:44:12,251 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 382 flow [2024-01-31 16:44:12,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2024-01-31 16:44:12,252 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2024-01-31 16:44:12,252 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 382 flow [2024-01-31 16:44:12,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:12,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:12,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:44:12,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:12,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2072894358, now seen corresponding path program 1 times [2024-01-31 16:44:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:12,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175567750] [2024-01-31 16:44:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175567750] [2024-01-31 16:44:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175567750] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:12,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:44:12,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842564137] [2024-01-31 16:44:12,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:12,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:12,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:12,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-01-31 16:44:12,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:12,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-01-31 16:44:12,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:12,463 INFO L124 PetriNetUnfolderBase]: 412/795 cut-off events. [2024-01-31 16:44:12,464 INFO L125 PetriNetUnfolderBase]: For 1348/1847 co-relation queries the response was YES. [2024-01-31 16:44:12,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 795 events. 412/795 cut-off events. For 1348/1847 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4174 event pairs, 19 based on Foata normal form. 56/812 useless extension candidates. Maximal degree in co-relation 2476. Up to 264 conditions per place. [2024-01-31 16:44:12,467 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 25 selfloop transitions, 11 changer transitions 6/67 dead transitions. [2024-01-31 16:44:12,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 497 flow [2024-01-31 16:44:12,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:44:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:44:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-01-31 16:44:12,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7208333333333333 [2024-01-31 16:44:12,469 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 382 flow. Second operand 6 states and 173 transitions. [2024-01-31 16:44:12,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 67 transitions, 497 flow [2024-01-31 16:44:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 67 transitions, 464 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:44:12,472 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 348 flow [2024-01-31 16:44:12,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2024-01-31 16:44:12,473 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2024-01-31 16:44:12,473 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 348 flow [2024-01-31 16:44:12,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:12,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:44:12,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:12,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1992716097, now seen corresponding path program 1 times [2024-01-31 16:44:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373104635] [2024-01-31 16:44:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:12,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:12,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373104635] [2024-01-31 16:44:12,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373104635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:12,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:12,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:44:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860824249] [2024-01-31 16:44:12,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:12,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:44:12,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:44:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:44:12,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-01-31 16:44:12,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 49 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:12,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-01-31 16:44:12,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:12,737 INFO L124 PetriNetUnfolderBase]: 458/984 cut-off events. [2024-01-31 16:44:12,737 INFO L125 PetriNetUnfolderBase]: For 2826/2928 co-relation queries the response was YES. [2024-01-31 16:44:12,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3241 conditions, 984 events. 458/984 cut-off events. For 2826/2928 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6123 event pairs, 218 based on Foata normal form. 20/901 useless extension candidates. Maximal degree in co-relation 3210. Up to 297 conditions per place. [2024-01-31 16:44:12,741 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 22 selfloop transitions, 5 changer transitions 28/75 dead transitions. [2024-01-31 16:44:12,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 568 flow [2024-01-31 16:44:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:44:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:44:12,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-01-31 16:44:12,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-01-31 16:44:12,743 INFO L175 Difference]: Start difference. First operand has 74 places, 49 transitions, 348 flow. Second operand 7 states and 161 transitions. [2024-01-31 16:44:12,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 568 flow [2024-01-31 16:44:12,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 475 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-01-31 16:44:12,748 INFO L231 Difference]: Finished difference. Result has 73 places, 40 transitions, 205 flow [2024-01-31 16:44:12,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2024-01-31 16:44:12,749 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2024-01-31 16:44:12,749 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 205 flow [2024-01-31 16:44:12,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:12,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:12,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:44:12,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:44:12,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:12,750 INFO L85 PathProgramCache]: Analyzing trace with hash -761654093, now seen corresponding path program 2 times [2024-01-31 16:44:12,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:12,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102964066] [2024-01-31 16:44:12,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:44:12,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:12,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102964066] [2024-01-31 16:44:12,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102964066] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:12,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:12,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:44:12,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512718607] [2024-01-31 16:44:12,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:12,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:12,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:12,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:12,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:12,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-01-31 16:44:12,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 40 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:12,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-01-31 16:44:12,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:12,909 INFO L124 PetriNetUnfolderBase]: 110/243 cut-off events. [2024-01-31 16:44:12,909 INFO L125 PetriNetUnfolderBase]: For 506/516 co-relation queries the response was YES. [2024-01-31 16:44:12,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 243 events. 110/243 cut-off events. For 506/516 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 900 event pairs, 20 based on Foata normal form. 9/223 useless extension candidates. Maximal degree in co-relation 678. Up to 103 conditions per place. [2024-01-31 16:44:12,911 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2024-01-31 16:44:12,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 50 transitions, 282 flow [2024-01-31 16:44:12,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:44:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:44:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-01-31 16:44:12,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-01-31 16:44:12,913 INFO L175 Difference]: Start difference. First operand has 73 places, 40 transitions, 205 flow. Second operand 7 states and 156 transitions. [2024-01-31 16:44:12,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 50 transitions, 282 flow [2024-01-31 16:44:12,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 211 flow, removed 6 selfloop flow, removed 20 redundant places. [2024-01-31 16:44:12,914 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2024-01-31 16:44:12,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2024-01-31 16:44:12,915 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-01-31 16:44:12,915 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2024-01-31 16:44:12,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:44:12,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-01-31 16:44:12,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-31 16:44:12,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-31 16:44:12,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-31 16:44:12,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-01-31 16:44:12,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:44:12,919 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:12,921 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:44:12,921 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:44:12,923 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-01-31 16:44:12,923 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-01-31 16:44:12,924 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:44:12 BasicIcfg [2024-01-31 16:44:12,924 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:44:12,925 INFO L158 Benchmark]: Toolchain (without parser) took 6177.81ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 128.4MB in the beginning and 154.5MB in the end (delta: -26.1MB). Peak memory consumption was 76.0MB. Max. memory is 16.1GB. [2024-01-31 16:44:12,925 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:44:12,925 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory was 89.6MB in the beginning and 89.3MB in the end (delta: 232.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:44:12,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 786.67ms. Allocated memory is still 161.5MB. Free memory was 128.4MB in the beginning and 113.9MB in the end (delta: 14.5MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. [2024-01-31 16:44:12,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.21ms. Allocated memory is still 161.5MB. Free memory was 113.9MB in the beginning and 111.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:44:12,926 INFO L158 Benchmark]: Boogie Preprocessor took 29.70ms. Allocated memory is still 161.5MB. Free memory was 111.8MB in the beginning and 109.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:44:12,926 INFO L158 Benchmark]: RCFGBuilder took 531.29ms. Allocated memory is still 161.5MB. Free memory was 109.7MB in the beginning and 87.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-31 16:44:12,926 INFO L158 Benchmark]: TraceAbstraction took 4774.60ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 86.6MB in the beginning and 154.5MB in the end (delta: -67.8MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2024-01-31 16:44:12,927 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 161.5MB. Free memory was 89.6MB in the beginning and 89.3MB in the end (delta: 232.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 786.67ms. Allocated memory is still 161.5MB. Free memory was 128.4MB in the beginning and 113.9MB in the end (delta: 14.5MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.21ms. Allocated memory is still 161.5MB. Free memory was 113.9MB in the beginning and 111.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.70ms. Allocated memory is still 161.5MB. Free memory was 111.8MB in the beginning and 109.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 531.29ms. Allocated memory is still 161.5MB. Free memory was 109.7MB in the beginning and 87.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4774.60ms. Allocated memory was 161.5MB in the beginning and 264.2MB in the end (delta: 102.8MB). Free memory was 86.6MB in the beginning and 154.5MB in the end (delta: -67.8MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 5 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: 4.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 553 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 495 mSDsluCounter, 388 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 304 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1124 IncrementalHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 84 mSDtfsCounter, 1124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=508occurred in iteration=6, InterpolantAutomatonStates: 88, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 259 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 247 ConstructedInterpolants, 0 QuantifiedInterpolants, 1109 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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! [2024-01-31 16:44:12,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE