./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix021.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/mix021.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/mix021.opt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix021.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 17:35:45,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:35:46,023 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:35:46,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:35:46,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:35:46,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:35:46,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:35:46,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:35:46,055 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:35:46,058 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:35:46,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:35:46,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:35:46,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:35:46,060 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:35:46,060 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:35:46,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:35:46,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:35:46,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:35:46,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:35:46,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:35:46,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:35:46,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:35:46,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:35:46,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:35:46,062 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:35:46,063 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:35:46,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:35:46,063 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:35:46,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:35:46,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:35:46,065 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:35:46,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:35:46,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:46,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:35:46,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:35:46,066 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:35:46,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:35:46,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:35:46,067 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:35:46,067 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:35:46,067 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:35:46,067 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:35:46,068 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:35:46,068 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:35:46,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:35:46,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:35:46,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:35:46,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:35:46,336 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:35:46,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-01-31 17:35:47,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:35:47,690 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:35:47,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021.opt.i [2024-01-31 17:35:47,721 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667b5bc41/5f8d3f035625426cb31e66ee5a6cca2f/FLAGd9634bc42 [2024-01-31 17:35:47,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/667b5bc41/5f8d3f035625426cb31e66ee5a6cca2f [2024-01-31 17:35:47,738 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:35:47,739 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:35:47,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/mix021.opt.yml/witness.yml [2024-01-31 17:35:48,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:35:48,408 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:35:48,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:48,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:35:48,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:35:48,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:47" (1/2) ... [2024-01-31 17:35:48,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44eb872a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:48, skipping insertion in model container [2024-01-31 17:35:48,416 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:35:47" (1/2) ... [2024-01-31 17:35:48,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5113ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:35:48, skipping insertion in model container [2024-01-31 17:35:48,418 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:48" (2/2) ... [2024-01-31 17:35:48,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44eb872a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:48, skipping insertion in model container [2024-01-31 17:35:48,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:48" (2/2) ... [2024-01-31 17:35:48,419 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:35:50,666 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:35:50,670 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 17:35:50,671 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 17:35:50,747 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:35:51,002 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/mix021.opt.i[944,957] [2024-01-31 17:35:51,183 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:51,193 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:35:51,203 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/mix021.opt.i[944,957] Start Parsing Local [2024-01-31 17:35:51,227 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 17:35:51,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:35:51,340 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:35:51,341 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:35:51 WrapperNode [2024-01-31 17:35:51,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:35:51,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:51,342 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:35:51,342 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:35:51,349 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,381 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,420 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2024-01-31 17:35:51,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:35:51,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:35:51,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:35:51,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:35:51,431 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,432 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,444 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,468 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:35:51,469 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,469 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,485 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,487 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,488 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,495 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:35:51,502 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:35:51,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:35:51,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:35:51,503 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 05:35:51" (1/1) ... [2024-01-31 17:35:51,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:35:51,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:35:51,530 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 17:35:51,543 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 17:35:51,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:35:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:35:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:35:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:35:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:35:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:35:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:35:51,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:35:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:35:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 17:35:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 17:35:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 17:35:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 17:35:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-01-31 17:35:51,576 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-01-31 17:35:51,576 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-01-31 17:35:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-01-31 17:35:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:35:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:35:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:35:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:35:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:35:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:35:51,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:35:51,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:35:51,578 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 17:35:51,706 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:35:51,708 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:35:52,113 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:35:52,114 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:35:52,227 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:35:52,227 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 17:35:52,228 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:52 BoogieIcfgContainer [2024-01-31 17:35:52,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:35:52,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:35:52,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:35:52,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:35:52,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:35:47" (1/4) ... [2024-01-31 17:35:52,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b64dc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:35:52, skipping insertion in model container [2024-01-31 17:35:52,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:35:48" (2/4) ... [2024-01-31 17:35:52,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b64dc27 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:35:52, skipping insertion in model container [2024-01-31 17:35:52,233 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 05:35:51" (3/4) ... [2024-01-31 17:35:52,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b64dc27 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:35:52, skipping insertion in model container [2024-01-31 17:35:52,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:35:52" (4/4) ... [2024-01-31 17:35:52,234 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2024-01-31 17:35:52,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:35:52,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-01-31 17:35:52,248 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:35:52,282 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 17:35:52,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:52,326 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2024-01-31 17:35:52,326 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:52,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 1/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-01-31 17:35:52,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 52 transitions, 120 flow [2024-01-31 17:35:52,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 48 transitions, 108 flow [2024-01-31 17:35:52,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:35:52,344 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;@55066b10, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:35:52,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-01-31 17:35:52,350 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:35:52,351 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-01-31 17:35:52,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:52,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:52,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:52,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:52,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash 545332822, now seen corresponding path program 1 times [2024-01-31 17:35:52,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:52,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433118542] [2024-01-31 17:35:52,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:35:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:52,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433118542] [2024-01-31 17:35:52,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433118542] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255719312] [2024-01-31 17:35:52,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:35:52,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:52,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:35:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:35:52,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-01-31 17:35:52,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:35:52,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:52,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-01-31 17:35:52,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:53,002 INFO L124 PetriNetUnfolderBase]: 1059/2111 cut-off events. [2024-01-31 17:35:53,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:53,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3683 conditions, 2111 events. 1059/2111 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16975 event pairs, 1059 based on Foata normal form. 72/1926 useless extension candidates. Maximal degree in co-relation 3671. Up to 1529 conditions per place. [2024-01-31 17:35:53,021 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 22 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-01-31 17:35:53,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 46 transitions, 148 flow [2024-01-31 17:35:53,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:35:53,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:35:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-01-31 17:35:53,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7692307692307693 [2024-01-31 17:35:53,079 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 108 flow. Second operand 2 states and 80 transitions. [2024-01-31 17:35:53,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 46 transitions, 148 flow [2024-01-31 17:35:53,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 46 transitions, 144 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:35:53,087 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:53,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-01-31 17:35:53,095 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-01-31 17:35:53,095 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 100 flow [2024-01-31 17:35:53,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 17:35:53,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:53,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:53,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:35:53,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:53,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 545332823, now seen corresponding path program 1 times [2024-01-31 17:35:53,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:53,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407796533] [2024-01-31 17:35:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:53,294 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 17:35:53,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:53,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407796533] [2024-01-31 17:35:53,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407796533] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:53,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:53,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 17:35:53,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009316678] [2024-01-31 17:35:53,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:53,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:53,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:53,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-01-31 17:35:53,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:53,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:53,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-01-31 17:35:53,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:53,514 INFO L124 PetriNetUnfolderBase]: 879/1547 cut-off events. [2024-01-31 17:35:53,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 17:35:53,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2864 conditions, 1547 events. 879/1547 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10832 event pairs, 159 based on Foata normal form. 0/1494 useless extension candidates. Maximal degree in co-relation 2861. Up to 1009 conditions per place. [2024-01-31 17:35:53,525 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 26 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2024-01-31 17:35:53,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 176 flow [2024-01-31 17:35:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-01-31 17:35:53,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-01-31 17:35:53,530 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 100 flow. Second operand 3 states and 115 transitions. [2024-01-31 17:35:53,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 176 flow [2024-01-31 17:35:53,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 176 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:35:53,537 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:53,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-01-31 17:35:53,538 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-01-31 17:35:53,538 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 100 flow [2024-01-31 17:35:53,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:53,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:53,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:35:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:35:53,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:53,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:53,544 INFO L85 PathProgramCache]: Analyzing trace with hash -931763928, now seen corresponding path program 1 times [2024-01-31 17:35:53,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:53,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182664903] [2024-01-31 17:35:53,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:53,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:53,628 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 17:35:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182664903] [2024-01-31 17:35:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182664903] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:53,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:53,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:35:53,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16177148] [2024-01-31 17:35:53,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:53,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:35:53,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:53,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:35:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:35:53,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 52 [2024-01-31 17:35:53,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 17:35:53,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:53,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 52 [2024-01-31 17:35:53,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:53,914 INFO L124 PetriNetUnfolderBase]: 1175/1951 cut-off events. [2024-01-31 17:35:53,914 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-01-31 17:35:53,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 1951 events. 1175/1951 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14226 event pairs, 879 based on Foata normal form. 0/1850 useless extension candidates. Maximal degree in co-relation 3778. Up to 1277 conditions per place. [2024-01-31 17:35:53,923 INFO L140 encePairwiseOnDemand]: 50/52 looper letters, 29 selfloop transitions, 1 changer transitions 1/51 dead transitions. [2024-01-31 17:35:53,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 178 flow [2024-01-31 17:35:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:35:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:35:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-01-31 17:35:53,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-31 17:35:53,925 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 104 transitions. [2024-01-31 17:35:53,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 178 flow [2024-01-31 17:35:53,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:53,927 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:53,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-01-31 17:35:53,927 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-01-31 17:35:53,928 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 94 flow [2024-01-31 17:35:53,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 17:35:53,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:53,928 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 17:35:53,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:35:53,928 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:53,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:53,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1180089733, now seen corresponding path program 1 times [2024-01-31 17:35:53,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:53,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683605042] [2024-01-31 17:35:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:53,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:54,109 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 17:35:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683605042] [2024-01-31 17:35:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683605042] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:54,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:54,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:35:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540195509] [2024-01-31 17:35:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:54,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:35:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:35:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:35:54,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-01-31 17:35:54,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:54,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:54,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-01-31 17:35:54,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:55,891 INFO L124 PetriNetUnfolderBase]: 14315/21906 cut-off events. [2024-01-31 17:35:55,891 INFO L125 PetriNetUnfolderBase]: For 404/404 co-relation queries the response was YES. [2024-01-31 17:35:55,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42218 conditions, 21906 events. 14315/21906 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 1272. Compared 169365 event pairs, 4083 based on Foata normal form. 512/22169 useless extension candidates. Maximal degree in co-relation 42214. Up to 9259 conditions per place. [2024-01-31 17:35:56,038 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 43 selfloop transitions, 8 changer transitions 55/120 dead transitions. [2024-01-31 17:35:56,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 120 transitions, 468 flow [2024-01-31 17:35:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:35:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:35:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-01-31 17:35:56,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-01-31 17:35:56,041 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 94 flow. Second operand 7 states and 234 transitions. [2024-01-31 17:35:56,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 120 transitions, 468 flow [2024-01-31 17:35:56,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 120 transitions, 466 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:35:56,117 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 191 flow [2024-01-31 17:35:56,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=191, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2024-01-31 17:35:56,118 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2024-01-31 17:35:56,118 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 191 flow [2024-01-31 17:35:56,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:35:56,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:56,118 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 17:35:56,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:35:56,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:56,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -852471356, now seen corresponding path program 1 times [2024-01-31 17:35:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:56,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911490797] [2024-01-31 17:35:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:56,316 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 17:35:56,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911490797] [2024-01-31 17:35:56,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911490797] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:56,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:56,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:35:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671820797] [2024-01-31 17:35:56,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:56,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:56,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:56,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:56,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-01-31 17:35:56,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 17:35:56,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:56,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-01-31 17:35:56,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:35:58,351 INFO L124 PetriNetUnfolderBase]: 13003/21178 cut-off events. [2024-01-31 17:35:58,351 INFO L125 PetriNetUnfolderBase]: For 23155/23164 co-relation queries the response was YES. [2024-01-31 17:35:58,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60723 conditions, 21178 events. 13003/21178 cut-off events. For 23155/23164 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 174149 event pairs, 1281 based on Foata normal form. 482/21524 useless extension candidates. Maximal degree in co-relation 60714. Up to 8193 conditions per place. [2024-01-31 17:35:58,482 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 60 selfloop transitions, 12 changer transitions 86/172 dead transitions. [2024-01-31 17:35:58,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 172 transitions, 1090 flow [2024-01-31 17:35:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:35:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:35:58,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-01-31 17:35:58,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-01-31 17:35:58,484 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 191 flow. Second operand 10 states and 325 transitions. [2024-01-31 17:35:58,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 172 transitions, 1090 flow [2024-01-31 17:35:58,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 172 transitions, 1010 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 17:35:58,516 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 313 flow [2024-01-31 17:35:58,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=313, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2024-01-31 17:35:58,517 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 17 predicate places. [2024-01-31 17:35:58,517 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 313 flow [2024-01-31 17:35:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 17:35:58,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:35:58,517 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 17:35:58,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:35:58,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:35:58,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:35:58,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1921829060, now seen corresponding path program 1 times [2024-01-31 17:35:58,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:35:58,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338968642] [2024-01-31 17:35:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:35:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:35:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:35:58,623 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 17:35:58,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:35:58,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338968642] [2024-01-31 17:35:58,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338968642] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:35:58,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:35:58,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:35:58,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625366096] [2024-01-31 17:35:58,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:35:58,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:35:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:35:58,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:35:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:35:58,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-01-31 17:35:58,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 17:35:58,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:35:58,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-01-31 17:35:58,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:00,483 INFO L124 PetriNetUnfolderBase]: 11835/18454 cut-off events. [2024-01-31 17:36:00,484 INFO L125 PetriNetUnfolderBase]: For 53123/53123 co-relation queries the response was YES. [2024-01-31 17:36:00,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63124 conditions, 18454 events. 11835/18454 cut-off events. For 53123/53123 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 139263 event pairs, 2353 based on Foata normal form. 380/18721 useless extension candidates. Maximal degree in co-relation 63107. Up to 7869 conditions per place. [2024-01-31 17:36:00,637 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 64 selfloop transitions, 19 changer transitions 70/167 dead transitions. [2024-01-31 17:36:00,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1196 flow [2024-01-31 17:36:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:36:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:36:00,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2024-01-31 17:36:00,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6211538461538462 [2024-01-31 17:36:00,639 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 313 flow. Second operand 10 states and 323 transitions. [2024-01-31 17:36:00,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1196 flow [2024-01-31 17:36:00,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 167 transitions, 1168 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-01-31 17:36:00,956 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 453 flow [2024-01-31 17:36:00,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=453, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2024-01-31 17:36:00,957 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 28 predicate places. [2024-01-31 17:36:00,957 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 453 flow [2024-01-31 17:36:00,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 17:36:00,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:00,957 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] [2024-01-31 17:36:00,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 17:36:00,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:00,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:00,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1086411895, now seen corresponding path program 1 times [2024-01-31 17:36:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196237255] [2024-01-31 17:36:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:00,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:36:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:01,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196237255] [2024-01-31 17:36:01,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196237255] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:01,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:01,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:36:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908810036] [2024-01-31 17:36:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:01,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:36:01,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:01,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:36:01,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:36:01,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-01-31 17:36:01,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 17:36:01,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:01,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-01-31 17:36:01,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:02,755 INFO L124 PetriNetUnfolderBase]: 10371/16641 cut-off events. [2024-01-31 17:36:02,756 INFO L125 PetriNetUnfolderBase]: For 71889/71925 co-relation queries the response was YES. [2024-01-31 17:36:02,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62475 conditions, 16641 events. 10371/16641 cut-off events. For 71889/71925 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 129200 event pairs, 1855 based on Foata normal form. 351/16862 useless extension candidates. Maximal degree in co-relation 62449. Up to 5653 conditions per place. [2024-01-31 17:36:02,842 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 66 selfloop transitions, 18 changer transitions 68/166 dead transitions. [2024-01-31 17:36:02,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 166 transitions, 1510 flow [2024-01-31 17:36:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:36:02,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:36:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-01-31 17:36:02,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-01-31 17:36:02,844 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 453 flow. Second operand 10 states and 299 transitions. [2024-01-31 17:36:02,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 166 transitions, 1510 flow [2024-01-31 17:36:03,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 166 transitions, 1404 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-01-31 17:36:03,220 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 630 flow [2024-01-31 17:36:03,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=630, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-01-31 17:36:03,220 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 30 predicate places. [2024-01-31 17:36:03,220 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 630 flow [2024-01-31 17:36:03,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 17:36:03,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:03,221 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 17:36:03,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:36:03,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:03,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:03,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1986430159, now seen corresponding path program 1 times [2024-01-31 17:36:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:03,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002831602] [2024-01-31 17:36:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:03,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:03,446 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 17:36:03,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:03,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002831602] [2024-01-31 17:36:03,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002831602] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:03,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:03,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:36:03,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80332834] [2024-01-31 17:36:03,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:03,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:36:03,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:36:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:36:03,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-01-31 17:36:03,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 630 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 17:36:03,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:03,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-01-31 17:36:03,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:05,557 INFO L124 PetriNetUnfolderBase]: 12183/19743 cut-off events. [2024-01-31 17:36:05,557 INFO L125 PetriNetUnfolderBase]: For 98046/98046 co-relation queries the response was YES. [2024-01-31 17:36:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75484 conditions, 19743 events. 12183/19743 cut-off events. For 98046/98046 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 161372 event pairs, 2259 based on Foata normal form. 280/19739 useless extension candidates. Maximal degree in co-relation 75459. Up to 6230 conditions per place. [2024-01-31 17:36:05,674 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 66 selfloop transitions, 31 changer transitions 62/173 dead transitions. [2024-01-31 17:36:05,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 173 transitions, 1606 flow [2024-01-31 17:36:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:36:05,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:36:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 307 transitions. [2024-01-31 17:36:05,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5903846153846154 [2024-01-31 17:36:05,676 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 630 flow. Second operand 10 states and 307 transitions. [2024-01-31 17:36:05,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 173 transitions, 1606 flow [2024-01-31 17:36:06,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 173 transitions, 1535 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-01-31 17:36:06,049 INFO L231 Difference]: Finished difference. Result has 99 places, 77 transitions, 807 flow [2024-01-31 17:36:06,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=807, PETRI_PLACES=99, PETRI_TRANSITIONS=77} [2024-01-31 17:36:06,050 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 39 predicate places. [2024-01-31 17:36:06,050 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 77 transitions, 807 flow [2024-01-31 17:36:06,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 17:36:06,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:06,050 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] [2024-01-31 17:36:06,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 17:36:06,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:06,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:06,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2099643115, now seen corresponding path program 1 times [2024-01-31 17:36:06,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:06,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915157226] [2024-01-31 17:36:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:06,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:06,336 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 17:36:06,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:06,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915157226] [2024-01-31 17:36:06,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915157226] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:06,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:06,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:36:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666710344] [2024-01-31 17:36:06,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:06,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:36:06,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:36:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:36:06,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-01-31 17:36:06,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 77 transitions, 807 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:36:06,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:06,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-01-31 17:36:06,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:10,659 INFO L124 PetriNetUnfolderBase]: 23518/36444 cut-off events. [2024-01-31 17:36:10,659 INFO L125 PetriNetUnfolderBase]: For 128588/133260 co-relation queries the response was YES. [2024-01-31 17:36:11,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112606 conditions, 36444 events. 23518/36444 cut-off events. For 128588/133260 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 292565 event pairs, 4127 based on Foata normal form. 1853/37225 useless extension candidates. Maximal degree in co-relation 112574. Up to 18681 conditions per place. [2024-01-31 17:36:11,180 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 66 selfloop transitions, 6 changer transitions 0/117 dead transitions. [2024-01-31 17:36:11,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 117 transitions, 1265 flow [2024-01-31 17:36:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:36:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:36:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-01-31 17:36:11,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7067307692307693 [2024-01-31 17:36:11,182 INFO L175 Difference]: Start difference. First operand has 99 places, 77 transitions, 807 flow. Second operand 4 states and 147 transitions. [2024-01-31 17:36:11,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 117 transitions, 1265 flow [2024-01-31 17:36:11,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 117 transitions, 1237 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-01-31 17:36:11,276 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 833 flow [2024-01-31 17:36:11,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=833, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-01-31 17:36:11,278 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 31 predicate places. [2024-01-31 17:36:11,278 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 833 flow [2024-01-31 17:36:11,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:36:11,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:11,279 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 17:36:11,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:36:11,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:11,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:11,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1555642847, now seen corresponding path program 1 times [2024-01-31 17:36:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584042455] [2024-01-31 17:36:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:11,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:11,632 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 17:36:11,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:11,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584042455] [2024-01-31 17:36:11,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584042455] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:11,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:11,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:36:11,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317978157] [2024-01-31 17:36:11,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:11,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:36:11,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:36:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:36:11,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 52 [2024-01-31 17:36:11,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 17:36:11,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:11,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 52 [2024-01-31 17:36:11,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:17,886 INFO L124 PetriNetUnfolderBase]: 31415/50157 cut-off events. [2024-01-31 17:36:17,886 INFO L125 PetriNetUnfolderBase]: For 237778/239416 co-relation queries the response was YES. [2024-01-31 17:36:18,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180749 conditions, 50157 events. 31415/50157 cut-off events. For 237778/239416 co-relation queries the response was YES. Maximal size of possible extension queue 2546. Compared 444076 event pairs, 11367 based on Foata normal form. 695/46057 useless extension candidates. Maximal degree in co-relation 180721. Up to 19355 conditions per place. [2024-01-31 17:36:18,355 INFO L140 encePairwiseOnDemand]: 41/52 looper letters, 115 selfloop transitions, 39 changer transitions 11/184 dead transitions. [2024-01-31 17:36:18,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 184 transitions, 1906 flow [2024-01-31 17:36:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:36:18,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:36:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-01-31 17:36:18,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942307692307692 [2024-01-31 17:36:18,357 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 833 flow. Second operand 10 states and 309 transitions. [2024-01-31 17:36:18,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 184 transitions, 1906 flow [2024-01-31 17:36:18,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 184 transitions, 1890 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-31 17:36:18,628 INFO L231 Difference]: Finished difference. Result has 107 places, 99 transitions, 1290 flow [2024-01-31 17:36:18,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2024-01-31 17:36:18,629 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 47 predicate places. [2024-01-31 17:36:18,629 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 1290 flow [2024-01-31 17:36:18,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 17:36:18,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:18,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:36:18,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 17:36:18,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:18,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:18,631 INFO L85 PathProgramCache]: Analyzing trace with hash 141022947, now seen corresponding path program 1 times [2024-01-31 17:36:18,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:18,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10361215] [2024-01-31 17:36:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:18,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:18,815 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 17:36:18,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:18,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10361215] [2024-01-31 17:36:18,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10361215] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:18,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:18,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:36:18,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985603985] [2024-01-31 17:36:18,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:18,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:36:18,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:36:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:36:18,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-01-31 17:36:18,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 1290 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 17:36:18,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:18,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-01-31 17:36:18,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:24,020 INFO L124 PetriNetUnfolderBase]: 31317/47919 cut-off events. [2024-01-31 17:36:24,020 INFO L125 PetriNetUnfolderBase]: For 159500/164786 co-relation queries the response was YES. [2024-01-31 17:36:24,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156418 conditions, 47919 events. 31317/47919 cut-off events. For 159500/164786 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 386645 event pairs, 3085 based on Foata normal form. 2695/49586 useless extension candidates. Maximal degree in co-relation 156383. Up to 19920 conditions per place. [2024-01-31 17:36:24,445 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 82 selfloop transitions, 10 changer transitions 18/159 dead transitions. [2024-01-31 17:36:24,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 159 transitions, 2033 flow [2024-01-31 17:36:24,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:36:24,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:36:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-01-31 17:36:24,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2024-01-31 17:36:24,447 INFO L175 Difference]: Start difference. First operand has 107 places, 99 transitions, 1290 flow. Second operand 5 states and 188 transitions. [2024-01-31 17:36:24,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 159 transitions, 2033 flow [2024-01-31 17:36:25,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 159 transitions, 1973 flow, removed 30 selfloop flow, removed 0 redundant places. [2024-01-31 17:36:25,042 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 1074 flow [2024-01-31 17:36:25,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1074, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2024-01-31 17:36:25,042 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 53 predicate places. [2024-01-31 17:36:25,043 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 1074 flow [2024-01-31 17:36:25,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 17:36:25,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:25,043 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 17:36:25,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 17:36:25,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:25,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:25,044 INFO L85 PathProgramCache]: Analyzing trace with hash 439006419, now seen corresponding path program 1 times [2024-01-31 17:36:25,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:25,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039997222] [2024-01-31 17:36:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:25,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:36:25,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:25,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039997222] [2024-01-31 17:36:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039997222] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:25,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:25,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 17:36:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89930542] [2024-01-31 17:36:25,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:36:25,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:36:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:36:25,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-01-31 17:36:25,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 1074 flow. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 17:36:25,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:25,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-01-31 17:36:25,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:29,094 INFO L124 PetriNetUnfolderBase]: 22238/34056 cut-off events. [2024-01-31 17:36:29,096 INFO L125 PetriNetUnfolderBase]: For 111376/117735 co-relation queries the response was YES. [2024-01-31 17:36:29,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120712 conditions, 34056 events. 22238/34056 cut-off events. For 111376/117735 co-relation queries the response was YES. Maximal size of possible extension queue 1891. Compared 265213 event pairs, 1226 based on Foata normal form. 1881/35083 useless extension candidates. Maximal degree in co-relation 120674. Up to 11080 conditions per place. [2024-01-31 17:36:29,439 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 90 selfloop transitions, 14 changer transitions 7/159 dead transitions. [2024-01-31 17:36:29,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 1828 flow [2024-01-31 17:36:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:36:29,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:36:29,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-01-31 17:36:29,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7275641025641025 [2024-01-31 17:36:29,441 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 1074 flow. Second operand 6 states and 227 transitions. [2024-01-31 17:36:29,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 1828 flow [2024-01-31 17:36:29,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 159 transitions, 1689 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-01-31 17:36:29,570 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 1031 flow [2024-01-31 17:36:29,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1031, PETRI_PLACES=107, PETRI_TRANSITIONS=95} [2024-01-31 17:36:29,571 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 47 predicate places. [2024-01-31 17:36:29,571 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 1031 flow [2024-01-31 17:36:29,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 17:36:29,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:29,572 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, 1, 1, 1] [2024-01-31 17:36:29,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 17:36:29,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:29,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1686130888, now seen corresponding path program 1 times [2024-01-31 17:36:29,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:29,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421586684] [2024-01-31 17:36:29,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:29,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:36:29,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:29,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421586684] [2024-01-31 17:36:29,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421586684] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:29,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:36:29,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152557337] [2024-01-31 17:36:29,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:29,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 17:36:29,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 17:36:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-01-31 17:36:29,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 52 [2024-01-31 17:36:29,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 95 transitions, 1031 flow. Second operand has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 17:36:29,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:29,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 52 [2024-01-31 17:36:29,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:36:33,022 INFO L124 PetriNetUnfolderBase]: 19826/30148 cut-off events. [2024-01-31 17:36:33,023 INFO L125 PetriNetUnfolderBase]: For 118676/124678 co-relation queries the response was YES. [2024-01-31 17:36:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116126 conditions, 30148 events. 19826/30148 cut-off events. For 118676/124678 co-relation queries the response was YES. Maximal size of possible extension queue 1890. Compared 232449 event pairs, 1154 based on Foata normal form. 1171/30497 useless extension candidates. Maximal degree in co-relation 116092. Up to 11080 conditions per place. [2024-01-31 17:36:33,272 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 75 selfloop transitions, 18 changer transitions 17/152 dead transitions. [2024-01-31 17:36:33,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 152 transitions, 1615 flow [2024-01-31 17:36:33,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 17:36:33,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 17:36:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-01-31 17:36:33,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813186813186813 [2024-01-31 17:36:33,273 INFO L175 Difference]: Start difference. First operand has 107 places, 95 transitions, 1031 flow. Second operand 7 states and 248 transitions. [2024-01-31 17:36:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 152 transitions, 1615 flow [2024-01-31 17:36:33,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 1522 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-01-31 17:36:33,703 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 868 flow [2024-01-31 17:36:33,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=868, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-01-31 17:36:33,703 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 43 predicate places. [2024-01-31 17:36:33,704 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 868 flow [2024-01-31 17:36:33,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.857142857142858) internal successors, (181), 7 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 17:36:33,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:36:33,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:36:33,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:36:33,704 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P3Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-01-31 17:36:33,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:36:33,705 INFO L85 PathProgramCache]: Analyzing trace with hash 835372977, now seen corresponding path program 1 times [2024-01-31 17:36:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:36:33,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785973400] [2024-01-31 17:36:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:36:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:36:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:36:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:36:33,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:36:33,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785973400] [2024-01-31 17:36:33,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785973400] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:36:33,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:36:33,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 17:36:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437560722] [2024-01-31 17:36:33,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:36:33,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:36:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:36:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:36:33,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:36:33,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 52 [2024-01-31 17:36:33,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 868 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 17:36:33,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:36:33,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 52 [2024-01-31 17:36:33,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand