./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c --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/chl-nzb-file-trans.wvr.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/weaver/chl-nzb-file-trans.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-nzb-file-trans.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:50:08,348 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:50:08,429 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:50:08,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:50:08,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:50:08,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:50:08,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:50:08,466 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:50:08,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:50:08,469 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:50:08,470 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:50:08,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:50:08,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:50:08,472 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:50:08,472 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:50:08,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:50:08,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:50:08,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:50:08,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:50:08,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:50:08,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:50:08,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:50:08,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:50:08,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:50:08,474 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:50:08,474 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:50:08,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:50:08,475 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:50:08,475 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:50:08,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:50:08,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:50:08,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:50:08,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:50:08,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:50:08,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:50:08,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:50:08,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:50:08,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:50:08,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:50:08,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:50:08,478 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:50:08,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:50:08,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:50:08,479 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:50:08,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:50:08,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:50:08,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:50:08,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:50:08,680 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:50:08,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2024-01-31 16:50:09,718 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:50:09,852 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:50:09,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2024-01-31 16:50:09,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35a81289/7419e78a1c514bafb25b97dff412a81c/FLAG2f808a633 [2024-01-31 16:50:09,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35a81289/7419e78a1c514bafb25b97dff412a81c [2024-01-31 16:50:09,877 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:50:09,877 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:50:09,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-nzb-file-trans.wvr.yml/witness.yml [2024-01-31 16:50:10,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:50:10,098 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:50:10,098 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:50:10,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:50:10,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:50:10,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:50:09" (1/2) ... [2024-01-31 16:50:10,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7965d3b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:10, skipping insertion in model container [2024-01-31 16:50:10,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:50:09" (1/2) ... [2024-01-31 16:50:10,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@697c9697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:50:10, skipping insertion in model container [2024-01-31 16:50:10,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:50:10" (2/2) ... [2024-01-31 16:50:10,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7965d3b8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10, skipping insertion in model container [2024-01-31 16:50:10,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:50:10" (2/2) ... [2024-01-31 16:50:10,107 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:50:10,204 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:50:10,229 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:50:10,391 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-01-31 16:50:10,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:50:10,427 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:50:10,462 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6489,6502] [2024-01-31 16:50:10,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:50:10,486 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:50:10,486 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10 WrapperNode [2024-01-31 16:50:10,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:50:10,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:50:10,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:50:10,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:50:10,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,552 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 606 [2024-01-31 16:50:10,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:50:10,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:50:10,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:50:10,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:50:10,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,623 INFO L175 MemorySlicer]: Split 35 memory accesses to 5 slices as follows [2, 2, 2, 27, 2]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 3, 1]. [2024-01-31 16:50:10,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:50:10,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:50:10,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:50:10,682 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:50:10,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (1/1) ... [2024-01-31 16:50:10,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:50:10,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:10,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:50:10,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:50:10,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:50:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:50:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:50:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:50:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:50:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:50:10,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:50:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:50:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:50:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:50:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:50:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:50:10,750 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:50:10,750 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:50:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:50:10,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:50:10,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:50:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:50:10,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:50:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:50:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:50:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:50:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:50:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 16:50:10,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:50:10,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:50:10,755 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:50:10,894 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:50:10,895 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:50:11,472 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:50:11,472 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:50:12,081 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:50:12,082 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-01-31 16:50:12,082 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:50:12 BoogieIcfgContainer [2024-01-31 16:50:12,082 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:50:12,085 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:50:12,085 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:50:12,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:50:12,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:50:09" (1/4) ... [2024-01-31 16:50:12,088 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e05b302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:50:12, skipping insertion in model container [2024-01-31 16:50:12,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:50:10" (2/4) ... [2024-01-31 16:50:12,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e05b302 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:50:12, skipping insertion in model container [2024-01-31 16:50:12,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:50:10" (3/4) ... [2024-01-31 16:50:12,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e05b302 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:50:12, skipping insertion in model container [2024-01-31 16:50:12,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:50:12" (4/4) ... [2024-01-31 16:50:12,090 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2024-01-31 16:50:12,104 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:50:12,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:50:12,104 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:50:12,191 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-31 16:50:12,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 51 transitions, 123 flow [2024-01-31 16:50:12,251 INFO L124 PetriNetUnfolderBase]: 12/48 cut-off events. [2024-01-31 16:50:12,251 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:50:12,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 12/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-01-31 16:50:12,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 51 transitions, 123 flow [2024-01-31 16:50:12,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-01-31 16:50:12,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:50:12,275 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;@2c32a605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:50:12,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:50:12,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:50:12,295 INFO L124 PetriNetUnfolderBase]: 12/46 cut-off events. [2024-01-31 16:50:12,295 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-31 16:50:12,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:12,296 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] [2024-01-31 16:50:12,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:12,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:12,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1416757406, now seen corresponding path program 1 times [2024-01-31 16:50:12,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:12,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340974967] [2024-01-31 16:50:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:12,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:50:12,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:12,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340974967] [2024-01-31 16:50:12,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340974967] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:12,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:12,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:50:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902953427] [2024-01-31 16:50:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:12,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:50:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:50:12,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:50:12,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:12,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:12,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:12,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:12,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:13,219 INFO L124 PetriNetUnfolderBase]: 1664/2361 cut-off events. [2024-01-31 16:50:13,219 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-01-31 16:50:13,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4768 conditions, 2361 events. 1664/2361 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9842 event pairs, 1125 based on Foata normal form. 268/2082 useless extension candidates. Maximal degree in co-relation 4159. Up to 2271 conditions per place. [2024-01-31 16:50:13,232 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-01-31 16:50:13,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 198 flow [2024-01-31 16:50:13,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:50:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:50:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-01-31 16:50:13,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2024-01-31 16:50:13,244 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 3 states and 70 transitions. [2024-01-31 16:50:13,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 198 flow [2024-01-31 16:50:13,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 186 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:50:13,255 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 126 flow [2024-01-31 16:50:13,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2024-01-31 16:50:13,259 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2024-01-31 16:50:13,259 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 126 flow [2024-01-31 16:50:13,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:13,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:13,260 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] [2024-01-31 16:50:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:50:13,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:13,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:13,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1741264555, now seen corresponding path program 1 times [2024-01-31 16:50:13,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:13,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136061792] [2024-01-31 16:50:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:13,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:50:13,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136061792] [2024-01-31 16:50:13,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136061792] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:13,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464447617] [2024-01-31 16:50:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:13,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:13,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:13,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:13,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 16:50:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:13,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 16:50:13,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:50:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:50:13,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:50:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 16:50:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464447617] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:50:13,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:50:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-01-31 16:50:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409178842] [2024-01-31 16:50:13,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:50:13,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:50:13,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:50:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:50:13,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:13,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 126 flow. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:13,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:13,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:13,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:14,171 INFO L124 PetriNetUnfolderBase]: 1664/2370 cut-off events. [2024-01-31 16:50:14,172 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-01-31 16:50:14,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 2370 events. 1664/2370 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9852 event pairs, 1125 based on Foata normal form. 6/1831 useless extension candidates. Maximal degree in co-relation 4672. Up to 2271 conditions per place. [2024-01-31 16:50:14,180 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 37 selfloop transitions, 15 changer transitions 0/56 dead transitions. [2024-01-31 16:50:14,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 266 flow [2024-01-31 16:50:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:50:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:50:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-01-31 16:50:14,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3366013071895425 [2024-01-31 16:50:14,184 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 126 flow. Second operand 6 states and 103 transitions. [2024-01-31 16:50:14,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 266 flow [2024-01-31 16:50:14,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:14,187 INFO L231 Difference]: Finished difference. Result has 49 places, 56 transitions, 216 flow [2024-01-31 16:50:14,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=56} [2024-01-31 16:50:14,188 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-01-31 16:50:14,188 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 56 transitions, 216 flow [2024-01-31 16:50:14,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:14,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:14,189 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:14,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-31 16:50:14,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:14,401 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:14,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -397893168, now seen corresponding path program 2 times [2024-01-31 16:50:14,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:14,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600216880] [2024-01-31 16:50:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:14,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-31 16:50:14,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:14,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600216880] [2024-01-31 16:50:14,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600216880] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:14,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234415828] [2024-01-31 16:50:14,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:50:14,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:14,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:14,581 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:14,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 16:50:14,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-31 16:50:14,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:50:14,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 16:50:14,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:50:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-31 16:50:16,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:50:16,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234415828] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:16,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:50:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-01-31 16:50:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073878758] [2024-01-31 16:50:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:16,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:16,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:50:16,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:16,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 56 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:16,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:16,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:16,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:17,302 INFO L124 PetriNetUnfolderBase]: 2392/3465 cut-off events. [2024-01-31 16:50:17,302 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-01-31 16:50:17,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6973 conditions, 3465 events. 2392/3465 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16292 event pairs, 1125 based on Foata normal form. 1/2726 useless extension candidates. Maximal degree in co-relation 6885. Up to 2197 conditions per place. [2024-01-31 16:50:17,313 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 93 selfloop transitions, 2 changer transitions 10/109 dead transitions. [2024-01-31 16:50:17,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 109 transitions, 544 flow [2024-01-31 16:50:17,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:17,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-31 16:50:17,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2024-01-31 16:50:17,317 INFO L175 Difference]: Start difference. First operand has 49 places, 56 transitions, 216 flow. Second operand 5 states and 129 transitions. [2024-01-31 16:50:17,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 109 transitions, 544 flow [2024-01-31 16:50:17,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 109 transitions, 520 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:17,322 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 207 flow [2024-01-31 16:50:17,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2024-01-31 16:50:17,323 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-01-31 16:50:17,323 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 207 flow [2024-01-31 16:50:17,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:17,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:17,324 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:17,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-31 16:50:17,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-31 16:50:17,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:17,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:17,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1787279914, now seen corresponding path program 3 times [2024-01-31 16:50:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:17,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492834985] [2024-01-31 16:50:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-31 16:50:17,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:17,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492834985] [2024-01-31 16:50:17,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492834985] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:17,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934042011] [2024-01-31 16:50:17,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 16:50:17,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:17,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:17,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:17,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 16:50:17,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-31 16:50:17,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:50:17,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 16:50:17,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:50:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-01-31 16:50:18,828 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-31 16:50:18,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934042011] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:18,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-31 16:50:18,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2024-01-31 16:50:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217362054] [2024-01-31 16:50:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:18,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:18,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:18,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:50:18,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:18,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:18,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:18,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:18,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:19,833 INFO L124 PetriNetUnfolderBase]: 3066/4543 cut-off events. [2024-01-31 16:50:19,833 INFO L125 PetriNetUnfolderBase]: For 775/775 co-relation queries the response was YES. [2024-01-31 16:50:19,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 4543 events. 3066/4543 cut-off events. For 775/775 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23003 event pairs, 1655 based on Foata normal form. 1/4078 useless extension candidates. Maximal degree in co-relation 9559. Up to 2965 conditions per place. [2024-01-31 16:50:19,853 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 89 selfloop transitions, 3 changer transitions 10/106 dead transitions. [2024-01-31 16:50:19,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 106 transitions, 531 flow [2024-01-31 16:50:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:19,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:19,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-01-31 16:50:19,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-01-31 16:50:19,858 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 207 flow. Second operand 5 states and 125 transitions. [2024-01-31 16:50:19,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 106 transitions, 531 flow [2024-01-31 16:50:19,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 106 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:50:19,862 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 224 flow [2024-01-31 16:50:19,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-01-31 16:50:19,863 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-01-31 16:50:19,864 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 224 flow [2024-01-31 16:50:19,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:19,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:19,864 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:19,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 16:50:20,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:20,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:20,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1452446996, now seen corresponding path program 4 times [2024-01-31 16:50:20,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:20,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964800878] [2024-01-31 16:50:20,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-31 16:50:20,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:20,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964800878] [2024-01-31 16:50:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964800878] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955795595] [2024-01-31 16:50:20,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 16:50:20,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:20,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:20,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 16:50:20,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 16:50:20,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:50:20,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-31 16:50:20,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:50:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-31 16:50:20,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:50:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-01-31 16:50:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955795595] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:50:20,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:50:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-31 16:50:20,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122030048] [2024-01-31 16:50:20,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:50:20,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 16:50:20,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:20,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 16:50:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2024-01-31 16:50:20,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:20,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:20,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:20,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:20,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:21,108 INFO L124 PetriNetUnfolderBase]: 3032/4523 cut-off events. [2024-01-31 16:50:21,109 INFO L125 PetriNetUnfolderBase]: For 1875/1875 co-relation queries the response was YES. [2024-01-31 16:50:21,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 4523 events. 3032/4523 cut-off events. For 1875/1875 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22857 event pairs, 2407 based on Foata normal form. 1/4058 useless extension candidates. Maximal degree in co-relation 9939. Up to 4383 conditions per place. [2024-01-31 16:50:21,130 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 39 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-01-31 16:50:21,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 356 flow [2024-01-31 16:50:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:50:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:50:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-01-31 16:50:21,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29971988795518206 [2024-01-31 16:50:21,132 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 224 flow. Second operand 7 states and 107 transitions. [2024-01-31 16:50:21,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 356 flow [2024-01-31 16:50:21,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 350 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:50:21,136 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 286 flow [2024-01-31 16:50:21,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-01-31 16:50:21,138 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2024-01-31 16:50:21,138 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 286 flow [2024-01-31 16:50:21,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:21,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:21,138 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:21,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-31 16:50:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:21,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:21,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:21,352 INFO L85 PathProgramCache]: Analyzing trace with hash -405483631, now seen corresponding path program 5 times [2024-01-31 16:50:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:21,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324487037] [2024-01-31 16:50:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:21,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:21,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324487037] [2024-01-31 16:50:21,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324487037] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:21,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:21,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889478276] [2024-01-31 16:50:21,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:21,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:21,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:21,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:21,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:21,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:21,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:21,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:21,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:21,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:23,011 INFO L124 PetriNetUnfolderBase]: 5202/7884 cut-off events. [2024-01-31 16:50:23,012 INFO L125 PetriNetUnfolderBase]: For 1945/1945 co-relation queries the response was YES. [2024-01-31 16:50:23,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16798 conditions, 7884 events. 5202/7884 cut-off events. For 1945/1945 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 45715 event pairs, 1931 based on Foata normal form. 1/6970 useless extension candidates. Maximal degree in co-relation 16685. Up to 3546 conditions per place. [2024-01-31 16:50:23,049 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 112 selfloop transitions, 17 changer transitions 1/134 dead transitions. [2024-01-31 16:50:23,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 134 transitions, 736 flow [2024-01-31 16:50:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-01-31 16:50:23,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2024-01-31 16:50:23,050 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 286 flow. Second operand 5 states and 147 transitions. [2024-01-31 16:50:23,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 134 transitions, 736 flow [2024-01-31 16:50:23,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 134 transitions, 700 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:50:23,055 INFO L231 Difference]: Finished difference. Result has 67 places, 78 transitions, 404 flow [2024-01-31 16:50:23,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=67, PETRI_TRANSITIONS=78} [2024-01-31 16:50:23,057 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-01-31 16:50:23,057 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 78 transitions, 404 flow [2024-01-31 16:50:23,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:23,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:23,057 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:23,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:50:23,058 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:23,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:23,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1166366095, now seen corresponding path program 6 times [2024-01-31 16:50:23,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:23,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578380853] [2024-01-31 16:50:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:23,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:23,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578380853] [2024-01-31 16:50:23,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578380853] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:23,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:23,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:23,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108312181] [2024-01-31 16:50:23,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:23,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:23,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:23,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:23,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 78 transitions, 404 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:23,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:23,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:23,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:24,776 INFO L124 PetriNetUnfolderBase]: 5512/8291 cut-off events. [2024-01-31 16:50:24,776 INFO L125 PetriNetUnfolderBase]: For 7083/7107 co-relation queries the response was YES. [2024-01-31 16:50:24,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21191 conditions, 8291 events. 5512/8291 cut-off events. For 7083/7107 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48479 event pairs, 2727 based on Foata normal form. 25/8058 useless extension candidates. Maximal degree in co-relation 21092. Up to 4636 conditions per place. [2024-01-31 16:50:24,804 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 124 selfloop transitions, 20 changer transitions 2/150 dead transitions. [2024-01-31 16:50:24,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 150 transitions, 950 flow [2024-01-31 16:50:24,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:24,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-01-31 16:50:24,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529411764705883 [2024-01-31 16:50:24,806 INFO L175 Difference]: Start difference. First operand has 67 places, 78 transitions, 404 flow. Second operand 5 states and 141 transitions. [2024-01-31 16:50:24,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 150 transitions, 950 flow [2024-01-31 16:50:24,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 150 transitions, 948 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 16:50:24,819 INFO L231 Difference]: Finished difference. Result has 74 places, 90 transitions, 570 flow [2024-01-31 16:50:24,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=570, PETRI_PLACES=74, PETRI_TRANSITIONS=90} [2024-01-31 16:50:24,820 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2024-01-31 16:50:24,820 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 90 transitions, 570 flow [2024-01-31 16:50:24,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:24,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:24,820 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:24,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:50:24,821 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:24,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:24,821 INFO L85 PathProgramCache]: Analyzing trace with hash -376044409, now seen corresponding path program 7 times [2024-01-31 16:50:24,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:24,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185978180] [2024-01-31 16:50:24,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:24,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:25,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185978180] [2024-01-31 16:50:25,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185978180] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:25,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:25,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:25,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387714836] [2024-01-31 16:50:25,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:25,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:25,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:25,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 90 transitions, 570 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:25,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:25,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:25,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:26,650 INFO L124 PetriNetUnfolderBase]: 6046/9136 cut-off events. [2024-01-31 16:50:26,650 INFO L125 PetriNetUnfolderBase]: For 16119/16129 co-relation queries the response was YES. [2024-01-31 16:50:26,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25811 conditions, 9136 events. 6046/9136 cut-off events. For 16119/16129 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 55065 event pairs, 2939 based on Foata normal form. 3/8831 useless extension candidates. Maximal degree in co-relation 25708. Up to 5488 conditions per place. [2024-01-31 16:50:26,682 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 137 selfloop transitions, 17 changer transitions 2/160 dead transitions. [2024-01-31 16:50:26,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 160 transitions, 1151 flow [2024-01-31 16:50:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-01-31 16:50:26,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5450980392156862 [2024-01-31 16:50:26,684 INFO L175 Difference]: Start difference. First operand has 74 places, 90 transitions, 570 flow. Second operand 5 states and 139 transitions. [2024-01-31 16:50:26,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 160 transitions, 1151 flow [2024-01-31 16:50:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 160 transitions, 1137 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:26,705 INFO L231 Difference]: Finished difference. Result has 80 places, 103 transitions, 743 flow [2024-01-31 16:50:26,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=743, PETRI_PLACES=80, PETRI_TRANSITIONS=103} [2024-01-31 16:50:26,706 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-01-31 16:50:26,706 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 103 transitions, 743 flow [2024-01-31 16:50:26,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:26,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:26,706 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:50:26,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:26,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -668652335, now seen corresponding path program 8 times [2024-01-31 16:50:26,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:26,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906955141] [2024-01-31 16:50:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:27,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:27,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906955141] [2024-01-31 16:50:27,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906955141] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:27,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:27,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:27,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746906474] [2024-01-31 16:50:27,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:27,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:27,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:27,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:27,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 103 transitions, 743 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:27,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:27,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:27,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:29,008 INFO L124 PetriNetUnfolderBase]: 8424/12698 cut-off events. [2024-01-31 16:50:29,008 INFO L125 PetriNetUnfolderBase]: For 29950/29976 co-relation queries the response was YES. [2024-01-31 16:50:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38634 conditions, 12698 events. 8424/12698 cut-off events. For 29950/29976 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 80138 event pairs, 1725 based on Foata normal form. 11/12625 useless extension candidates. Maximal degree in co-relation 38528. Up to 4114 conditions per place. [2024-01-31 16:50:29,067 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 150 selfloop transitions, 66 changer transitions 1/221 dead transitions. [2024-01-31 16:50:29,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 221 transitions, 1739 flow [2024-01-31 16:50:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:50:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:50:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-01-31 16:50:29,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-01-31 16:50:29,069 INFO L175 Difference]: Start difference. First operand has 80 places, 103 transitions, 743 flow. Second operand 6 states and 194 transitions. [2024-01-31 16:50:29,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 221 transitions, 1739 flow [2024-01-31 16:50:29,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 221 transitions, 1716 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:29,126 INFO L231 Difference]: Finished difference. Result has 88 places, 139 transitions, 1324 flow [2024-01-31 16:50:29,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1324, PETRI_PLACES=88, PETRI_TRANSITIONS=139} [2024-01-31 16:50:29,127 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-01-31 16:50:29,127 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 139 transitions, 1324 flow [2024-01-31 16:50:29,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:29,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:29,127 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:29,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:50:29,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:29,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1135293362, now seen corresponding path program 1 times [2024-01-31 16:50:29,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:29,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324622047] [2024-01-31 16:50:29,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:29,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324622047] [2024-01-31 16:50:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324622047] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:29,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:29,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885272459] [2024-01-31 16:50:29,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:29,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:29,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:29,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:29,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:29,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 139 transitions, 1324 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:29,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:29,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:29,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:31,389 INFO L124 PetriNetUnfolderBase]: 8818/13405 cut-off events. [2024-01-31 16:50:31,389 INFO L125 PetriNetUnfolderBase]: For 47077/47121 co-relation queries the response was YES. [2024-01-31 16:50:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45790 conditions, 13405 events. 8818/13405 cut-off events. For 47077/47121 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 86941 event pairs, 4027 based on Foata normal form. 29/13394 useless extension candidates. Maximal degree in co-relation 45680. Up to 7864 conditions per place. [2024-01-31 16:50:31,512 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 174 selfloop transitions, 10 changer transitions 16/204 dead transitions. [2024-01-31 16:50:31,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 204 transitions, 1991 flow [2024-01-31 16:50:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:31,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-01-31 16:50:31,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-31 16:50:31,529 INFO L175 Difference]: Start difference. First operand has 88 places, 139 transitions, 1324 flow. Second operand 5 states and 135 transitions. [2024-01-31 16:50:31,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 204 transitions, 1991 flow [2024-01-31 16:50:31,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 204 transitions, 1929 flow, removed 31 selfloop flow, removed 0 redundant places. [2024-01-31 16:50:31,686 INFO L231 Difference]: Finished difference. Result has 94 places, 140 transitions, 1299 flow [2024-01-31 16:50:31,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1299, PETRI_PLACES=94, PETRI_TRANSITIONS=140} [2024-01-31 16:50:31,687 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 49 predicate places. [2024-01-31 16:50:31,687 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 140 transitions, 1299 flow [2024-01-31 16:50:31,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:31,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:31,687 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:31,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:50:31,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:31,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 786246588, now seen corresponding path program 1 times [2024-01-31 16:50:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521143172] [2024-01-31 16:50:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:31,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:31,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:31,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521143172] [2024-01-31 16:50:31,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521143172] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:31,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:31,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593437017] [2024-01-31 16:50:31,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:31,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:31,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:31,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 140 transitions, 1299 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:31,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:31,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:31,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:34,034 INFO L124 PetriNetUnfolderBase]: 9354/14317 cut-off events. [2024-01-31 16:50:34,034 INFO L125 PetriNetUnfolderBase]: For 46945/46989 co-relation queries the response was YES. [2024-01-31 16:50:34,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47608 conditions, 14317 events. 9354/14317 cut-off events. For 46945/46989 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 95100 event pairs, 4165 based on Foata normal form. 61/14302 useless extension candidates. Maximal degree in co-relation 47495. Up to 6224 conditions per place. [2024-01-31 16:50:34,106 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 168 selfloop transitions, 11 changer transitions 33/216 dead transitions. [2024-01-31 16:50:34,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 216 transitions, 2112 flow [2024-01-31 16:50:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-01-31 16:50:34,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529411764705883 [2024-01-31 16:50:34,129 INFO L175 Difference]: Start difference. First operand has 94 places, 140 transitions, 1299 flow. Second operand 5 states and 141 transitions. [2024-01-31 16:50:34,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 216 transitions, 2112 flow [2024-01-31 16:50:34,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 216 transitions, 2100 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:50:34,279 INFO L231 Difference]: Finished difference. Result has 98 places, 135 transitions, 1282 flow [2024-01-31 16:50:34,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=98, PETRI_TRANSITIONS=135} [2024-01-31 16:50:34,280 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 53 predicate places. [2024-01-31 16:50:34,280 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 135 transitions, 1282 flow [2024-01-31 16:50:34,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:34,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:34,281 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:34,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:50:34,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:34,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:34,281 INFO L85 PathProgramCache]: Analyzing trace with hash -234777528, now seen corresponding path program 2 times [2024-01-31 16:50:34,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:34,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370206448] [2024-01-31 16:50:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:34,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:34,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370206448] [2024-01-31 16:50:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370206448] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:34,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:34,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982115254] [2024-01-31 16:50:34,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:34,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:34,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:34,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:34,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:34,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:34,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 135 transitions, 1282 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:34,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:34,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:34,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:36,324 INFO L124 PetriNetUnfolderBase]: 8892/13573 cut-off events. [2024-01-31 16:50:36,324 INFO L125 PetriNetUnfolderBase]: For 48259/48305 co-relation queries the response was YES. [2024-01-31 16:50:36,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45962 conditions, 13573 events. 8892/13573 cut-off events. For 48259/48305 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 89083 event pairs, 3043 based on Foata normal form. 1/13503 useless extension candidates. Maximal degree in co-relation 45847. Up to 5694 conditions per place. [2024-01-31 16:50:36,408 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 139 selfloop transitions, 58 changer transitions 2/203 dead transitions. [2024-01-31 16:50:36,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 203 transitions, 2014 flow [2024-01-31 16:50:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-01-31 16:50:36,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5764705882352941 [2024-01-31 16:50:36,409 INFO L175 Difference]: Start difference. First operand has 98 places, 135 transitions, 1282 flow. Second operand 5 states and 147 transitions. [2024-01-31 16:50:36,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 203 transitions, 2014 flow [2024-01-31 16:50:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 203 transitions, 1996 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-31 16:50:36,597 INFO L231 Difference]: Finished difference. Result has 102 places, 146 transitions, 1614 flow [2024-01-31 16:50:36,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1614, PETRI_PLACES=102, PETRI_TRANSITIONS=146} [2024-01-31 16:50:36,597 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-01-31 16:50:36,598 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 146 transitions, 1614 flow [2024-01-31 16:50:36,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:36,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:36,598 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:36,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:50:36,598 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:36,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:36,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1844293510, now seen corresponding path program 1 times [2024-01-31 16:50:36,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:36,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593687328] [2024-01-31 16:50:36,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:36,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593687328] [2024-01-31 16:50:36,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593687328] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:36,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:50:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030635766] [2024-01-31 16:50:36,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:36,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:50:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:50:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:50:36,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:36,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 146 transitions, 1614 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:36,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:36,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:36,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:39,185 INFO L124 PetriNetUnfolderBase]: 9772/15141 cut-off events. [2024-01-31 16:50:39,186 INFO L125 PetriNetUnfolderBase]: For 61897/61897 co-relation queries the response was YES. [2024-01-31 16:50:39,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52677 conditions, 15141 events. 9772/15141 cut-off events. For 61897/61897 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 103185 event pairs, 3243 based on Foata normal form. 5/15142 useless extension candidates. Maximal degree in co-relation 52560. Up to 9736 conditions per place. [2024-01-31 16:50:39,257 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 155 selfloop transitions, 11 changer transitions 43/213 dead transitions. [2024-01-31 16:50:39,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 213 transitions, 2572 flow [2024-01-31 16:50:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:50:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:50:39,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-01-31 16:50:39,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553921568627451 [2024-01-31 16:50:39,258 INFO L175 Difference]: Start difference. First operand has 102 places, 146 transitions, 1614 flow. Second operand 4 states and 113 transitions. [2024-01-31 16:50:39,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 213 transitions, 2572 flow [2024-01-31 16:50:39,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 213 transitions, 2506 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:39,437 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1585 flow [2024-01-31 16:50:39,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1585, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-01-31 16:50:39,438 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2024-01-31 16:50:39,438 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1585 flow [2024-01-31 16:50:39,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:39,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:39,438 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:39,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:50:39,438 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:39,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash -306278708, now seen corresponding path program 3 times [2024-01-31 16:50:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:39,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601151050] [2024-01-31 16:50:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:39,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:39,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:39,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601151050] [2024-01-31 16:50:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601151050] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029807185] [2024-01-31 16:50:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:39,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:39,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:39,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:39,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1585 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:39,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:39,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:39,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:41,509 INFO L124 PetriNetUnfolderBase]: 8190/12672 cut-off events. [2024-01-31 16:50:41,509 INFO L125 PetriNetUnfolderBase]: For 52452/52492 co-relation queries the response was YES. [2024-01-31 16:50:41,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43438 conditions, 12672 events. 8190/12672 cut-off events. For 52452/52492 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 83506 event pairs, 3817 based on Foata normal form. 9/12621 useless extension candidates. Maximal degree in co-relation 43319. Up to 7502 conditions per place. [2024-01-31 16:50:41,572 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 176 selfloop transitions, 40 changer transitions 3/223 dead transitions. [2024-01-31 16:50:41,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 223 transitions, 2397 flow [2024-01-31 16:50:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:50:41,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:50:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-31 16:50:41,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-01-31 16:50:41,574 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1585 flow. Second operand 6 states and 164 transitions. [2024-01-31 16:50:41,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 223 transitions, 2397 flow [2024-01-31 16:50:41,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 223 transitions, 2342 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-01-31 16:50:41,702 INFO L231 Difference]: Finished difference. Result has 108 places, 153 transitions, 1830 flow [2024-01-31 16:50:41,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1830, PETRI_PLACES=108, PETRI_TRANSITIONS=153} [2024-01-31 16:50:41,702 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-01-31 16:50:41,702 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 153 transitions, 1830 flow [2024-01-31 16:50:41,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:41,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:41,704 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:41,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:50:41,704 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:41,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:41,704 INFO L85 PathProgramCache]: Analyzing trace with hash -254463226, now seen corresponding path program 2 times [2024-01-31 16:50:41,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:41,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52911644] [2024-01-31 16:50:41,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:41,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:41,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:41,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52911644] [2024-01-31 16:50:41,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52911644] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:41,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:41,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:50:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323304608] [2024-01-31 16:50:41,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:50:41,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:50:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:50:41,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:41,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 153 transitions, 1830 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:41,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:41,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:41,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:43,559 INFO L124 PetriNetUnfolderBase]: 8056/12545 cut-off events. [2024-01-31 16:50:43,559 INFO L125 PetriNetUnfolderBase]: For 60451/60491 co-relation queries the response was YES. [2024-01-31 16:50:43,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44935 conditions, 12545 events. 8056/12545 cut-off events. For 60451/60491 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 82977 event pairs, 4165 based on Foata normal form. 6/12523 useless extension candidates. Maximal degree in co-relation 44816. Up to 8118 conditions per place. [2024-01-31 16:50:43,614 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 139 selfloop transitions, 2 changer transitions 47/192 dead transitions. [2024-01-31 16:50:43,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 192 transitions, 2344 flow [2024-01-31 16:50:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:50:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:50:43,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-01-31 16:50:43,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392156862745098 [2024-01-31 16:50:43,615 INFO L175 Difference]: Start difference. First operand has 108 places, 153 transitions, 1830 flow. Second operand 4 states and 110 transitions. [2024-01-31 16:50:43,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 192 transitions, 2344 flow [2024-01-31 16:50:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 192 transitions, 2288 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-01-31 16:50:43,798 INFO L231 Difference]: Finished difference. Result has 110 places, 128 transitions, 1353 flow [2024-01-31 16:50:43,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1353, PETRI_PLACES=110, PETRI_TRANSITIONS=128} [2024-01-31 16:50:43,822 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2024-01-31 16:50:43,822 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 128 transitions, 1353 flow [2024-01-31 16:50:43,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:43,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:43,822 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:43,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:50:43,823 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:43,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:43,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1773580806, now seen corresponding path program 4 times [2024-01-31 16:50:43,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:43,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955934068] [2024-01-31 16:50:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:43,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:44,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:44,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955934068] [2024-01-31 16:50:44,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955934068] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:44,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:44,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:44,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908168118] [2024-01-31 16:50:44,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:44,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:44,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:44,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:44,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:44,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:44,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 128 transitions, 1353 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:44,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:44,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:44,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:45,352 INFO L124 PetriNetUnfolderBase]: 6052/9300 cut-off events. [2024-01-31 16:50:45,352 INFO L125 PetriNetUnfolderBase]: For 39274/39330 co-relation queries the response was YES. [2024-01-31 16:50:45,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32778 conditions, 9300 events. 6052/9300 cut-off events. For 39274/39330 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 57479 event pairs, 2299 based on Foata normal form. 29/9317 useless extension candidates. Maximal degree in co-relation 32693. Up to 4716 conditions per place. [2024-01-31 16:50:45,409 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 161 selfloop transitions, 6 changer transitions 19/190 dead transitions. [2024-01-31 16:50:45,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 190 transitions, 2072 flow [2024-01-31 16:50:45,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:45,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-01-31 16:50:45,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058823529411764 [2024-01-31 16:50:45,413 INFO L175 Difference]: Start difference. First operand has 110 places, 128 transitions, 1353 flow. Second operand 5 states and 129 transitions. [2024-01-31 16:50:45,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 190 transitions, 2072 flow [2024-01-31 16:50:45,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 190 transitions, 1963 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-01-31 16:50:45,566 INFO L231 Difference]: Finished difference. Result has 105 places, 127 transitions, 1282 flow [2024-01-31 16:50:45,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=105, PETRI_TRANSITIONS=127} [2024-01-31 16:50:45,567 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-01-31 16:50:45,567 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 127 transitions, 1282 flow [2024-01-31 16:50:45,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:45,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:45,567 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:45,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:50:45,568 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:45,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:45,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1129955952, now seen corresponding path program 2 times [2024-01-31 16:50:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:45,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872686301] [2024-01-31 16:50:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:45,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:45,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:45,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872686301] [2024-01-31 16:50:45,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872686301] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:45,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:45,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:50:45,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571432806] [2024-01-31 16:50:45,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:45,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:50:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:45,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:50:45,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:50:45,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:45,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 127 transitions, 1282 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:45,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:45,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:45,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:46,807 INFO L124 PetriNetUnfolderBase]: 5830/8915 cut-off events. [2024-01-31 16:50:46,808 INFO L125 PetriNetUnfolderBase]: For 34788/34828 co-relation queries the response was YES. [2024-01-31 16:50:46,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30517 conditions, 8915 events. 5830/8915 cut-off events. For 34788/34828 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 54027 event pairs, 3095 based on Foata normal form. 17/8908 useless extension candidates. Maximal degree in co-relation 30455. Up to 6178 conditions per place. [2024-01-31 16:50:46,852 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 88 selfloop transitions, 0 changer transitions 69/161 dead transitions. [2024-01-31 16:50:46,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 161 transitions, 1757 flow [2024-01-31 16:50:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:50:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:50:46,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-01-31 16:50:46,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-31 16:50:46,853 INFO L175 Difference]: Start difference. First operand has 105 places, 127 transitions, 1282 flow. Second operand 4 states and 102 transitions. [2024-01-31 16:50:46,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 161 transitions, 1757 flow [2024-01-31 16:50:46,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 161 transitions, 1704 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-01-31 16:50:46,956 INFO L231 Difference]: Finished difference. Result has 102 places, 92 transitions, 724 flow [2024-01-31 16:50:46,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=724, PETRI_PLACES=102, PETRI_TRANSITIONS=92} [2024-01-31 16:50:46,956 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2024-01-31 16:50:46,956 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 92 transitions, 724 flow [2024-01-31 16:50:46,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:46,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:46,957 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:46,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:50:46,957 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:46,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash -745129792, now seen corresponding path program 5 times [2024-01-31 16:50:46,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:46,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017327077] [2024-01-31 16:50:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:46,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:47,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:47,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017327077] [2024-01-31 16:50:47,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017327077] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:47,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:47,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:50:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901468628] [2024-01-31 16:50:47,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:47,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:50:47,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:50:47,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:50:47,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:47,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:47,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:47,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:47,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:47,979 INFO L124 PetriNetUnfolderBase]: 4658/7129 cut-off events. [2024-01-31 16:50:47,980 INFO L125 PetriNetUnfolderBase]: For 19180/19180 co-relation queries the response was YES. [2024-01-31 16:50:48,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22413 conditions, 7129 events. 4658/7129 cut-off events. For 19180/19180 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41139 event pairs, 1149 based on Foata normal form. 3/7124 useless extension candidates. Maximal degree in co-relation 22381. Up to 5072 conditions per place. [2024-01-31 16:50:48,023 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 97 selfloop transitions, 7 changer transitions 25/133 dead transitions. [2024-01-31 16:50:48,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 133 transitions, 1189 flow [2024-01-31 16:50:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:50:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:50:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-01-31 16:50:48,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-01-31 16:50:48,024 INFO L175 Difference]: Start difference. First operand has 102 places, 92 transitions, 724 flow. Second operand 4 states and 103 transitions. [2024-01-31 16:50:48,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 133 transitions, 1189 flow [2024-01-31 16:50:48,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 1063 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-01-31 16:50:48,092 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 647 flow [2024-01-31 16:50:48,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=647, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-01-31 16:50:48,093 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-01-31 16:50:48,093 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 647 flow [2024-01-31 16:50:48,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:48,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:48,093 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:50:48,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:50:48,094 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:48,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:48,094 INFO L85 PathProgramCache]: Analyzing trace with hash -624667182, now seen corresponding path program 6 times [2024-01-31 16:50:48,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:48,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232658681] [2024-01-31 16:50:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:48,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:48,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:48,276 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:48,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:48,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232658681] [2024-01-31 16:50:48,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232658681] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:48,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:48,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:50:48,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031231833] [2024-01-31 16:50:48,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:48,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:50:48,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:50:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:50:48,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:48,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 647 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:48,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:48,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:48,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:49,113 INFO L124 PetriNetUnfolderBase]: 3932/5968 cut-off events. [2024-01-31 16:50:49,114 INFO L125 PetriNetUnfolderBase]: For 10248/10248 co-relation queries the response was YES. [2024-01-31 16:50:49,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17717 conditions, 5968 events. 3932/5968 cut-off events. For 10248/10248 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 32696 event pairs, 1431 based on Foata normal form. 1/5941 useless extension candidates. Maximal degree in co-relation 17693. Up to 3060 conditions per place. [2024-01-31 16:50:49,140 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 94 selfloop transitions, 15 changer transitions 20/133 dead transitions. [2024-01-31 16:50:49,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 133 transitions, 1004 flow [2024-01-31 16:50:49,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:50:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:50:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-01-31 16:50:49,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2024-01-31 16:50:49,142 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 647 flow. Second operand 5 states and 123 transitions. [2024-01-31 16:50:49,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 133 transitions, 1004 flow [2024-01-31 16:50:49,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 133 transitions, 976 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-31 16:50:49,157 INFO L231 Difference]: Finished difference. Result has 86 places, 91 transitions, 626 flow [2024-01-31 16:50:49,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=86, PETRI_TRANSITIONS=91} [2024-01-31 16:50:49,157 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2024-01-31 16:50:49,158 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 91 transitions, 626 flow [2024-01-31 16:50:49,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 16:50:49,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:49,158 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 16:50:49,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:50:49,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:49,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash 256420817, now seen corresponding path program 1 times [2024-01-31 16:50:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:49,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550616046] [2024-01-31 16:50:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:49,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:49,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550616046] [2024-01-31 16:50:49,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550616046] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:49,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:49,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:50:49,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087748924] [2024-01-31 16:50:49,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:49,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:50:49,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:50:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:50:49,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:49,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 91 transitions, 626 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:49,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:49,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:49,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:50,026 INFO L124 PetriNetUnfolderBase]: 4020/6134 cut-off events. [2024-01-31 16:50:50,027 INFO L125 PetriNetUnfolderBase]: For 11281/11281 co-relation queries the response was YES. [2024-01-31 16:50:50,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17870 conditions, 6134 events. 4020/6134 cut-off events. For 11281/11281 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 33853 event pairs, 2403 based on Foata normal form. 28/6150 useless extension candidates. Maximal degree in co-relation 17847. Up to 5126 conditions per place. [2024-01-31 16:50:50,057 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 110 selfloop transitions, 2 changer transitions 2/118 dead transitions. [2024-01-31 16:50:50,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 931 flow [2024-01-31 16:50:50,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:50:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:50:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-01-31 16:50:50,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2024-01-31 16:50:50,059 INFO L175 Difference]: Start difference. First operand has 86 places, 91 transitions, 626 flow. Second operand 4 states and 94 transitions. [2024-01-31 16:50:50,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 931 flow [2024-01-31 16:50:50,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 118 transitions, 887 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:50:50,077 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 581 flow [2024-01-31 16:50:50,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=581, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2024-01-31 16:50:50,077 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-31 16:50:50,078 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 581 flow [2024-01-31 16:50:50,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:50,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:50,078 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 16:50:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:50:50,078 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:50,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 495925529, now seen corresponding path program 2 times [2024-01-31 16:50:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:50,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245032668] [2024-01-31 16:50:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:50,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:50,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:50,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245032668] [2024-01-31 16:50:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245032668] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:50,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:50,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:50:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118095539] [2024-01-31 16:50:50,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:50,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:50:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:50:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:50:50,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:50,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:50,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:50,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:50,928 INFO L124 PetriNetUnfolderBase]: 3674/5565 cut-off events. [2024-01-31 16:50:50,929 INFO L125 PetriNetUnfolderBase]: For 8287/8287 co-relation queries the response was YES. [2024-01-31 16:50:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16052 conditions, 5565 events. 3674/5565 cut-off events. For 8287/8287 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29691 event pairs, 2387 based on Foata normal form. 16/5569 useless extension candidates. Maximal degree in co-relation 16031. Up to 5126 conditions per place. [2024-01-31 16:50:50,953 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 83 selfloop transitions, 0 changer transitions 13/100 dead transitions. [2024-01-31 16:50:50,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 100 transitions, 784 flow [2024-01-31 16:50:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:50:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:50:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-01-31 16:50:50,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-01-31 16:50:50,954 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 581 flow. Second operand 4 states and 79 transitions. [2024-01-31 16:50:50,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 100 transitions, 784 flow [2024-01-31 16:50:50,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 779 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:50:50,967 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 538 flow [2024-01-31 16:50:50,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=538, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2024-01-31 16:50:50,967 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-31 16:50:50,968 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 538 flow [2024-01-31 16:50:50,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:50,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:50,968 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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 16:50:50,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:50:50,968 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:50,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1867237936, now seen corresponding path program 1 times [2024-01-31 16:50:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:50,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075801784] [2024-01-31 16:50:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:50,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:51,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:51,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075801784] [2024-01-31 16:50:51,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075801784] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:51,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:51,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:50:51,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321985267] [2024-01-31 16:50:51,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:51,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:50:51,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:51,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:50:51,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:50:51,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:51,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:51,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:51,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:51,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:51,872 INFO L124 PetriNetUnfolderBase]: 4236/6366 cut-off events. [2024-01-31 16:50:51,872 INFO L125 PetriNetUnfolderBase]: For 8748/8748 co-relation queries the response was YES. [2024-01-31 16:50:51,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18088 conditions, 6366 events. 4236/6366 cut-off events. For 8748/8748 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 34322 event pairs, 2425 based on Foata normal form. 166/6522 useless extension candidates. Maximal degree in co-relation 18068. Up to 4904 conditions per place. [2024-01-31 16:50:51,902 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 98 selfloop transitions, 10 changer transitions 1/113 dead transitions. [2024-01-31 16:50:51,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 113 transitions, 867 flow [2024-01-31 16:50:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:50:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:50:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-31 16:50:51,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-31 16:50:51,903 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 538 flow. Second operand 3 states and 78 transitions. [2024-01-31 16:50:51,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 113 transitions, 867 flow [2024-01-31 16:50:51,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 861 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-31 16:50:51,910 INFO L231 Difference]: Finished difference. Result has 78 places, 90 transitions, 588 flow [2024-01-31 16:50:51,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=588, PETRI_PLACES=78, PETRI_TRANSITIONS=90} [2024-01-31 16:50:51,911 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-01-31 16:50:51,911 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 90 transitions, 588 flow [2024-01-31 16:50:51,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:51,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:51,912 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 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 16:50:51,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:50:51,912 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:51,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:51,912 INFO L85 PathProgramCache]: Analyzing trace with hash -2138915452, now seen corresponding path program 1 times [2024-01-31 16:50:51,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:51,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050148255] [2024-01-31 16:50:51,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:51,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-01-31 16:50:52,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:52,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050148255] [2024-01-31 16:50:52,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050148255] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:52,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:52,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:50:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270375473] [2024-01-31 16:50:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:52,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:50:52,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:52,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:50:52,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:50:52,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:52,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 90 transitions, 588 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:52,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:52,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:52,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:53,271 INFO L124 PetriNetUnfolderBase]: 5868/8857 cut-off events. [2024-01-31 16:50:53,271 INFO L125 PetriNetUnfolderBase]: For 14770/14770 co-relation queries the response was YES. [2024-01-31 16:50:53,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25803 conditions, 8857 events. 5868/8857 cut-off events. For 14770/14770 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 52241 event pairs, 2949 based on Foata normal form. 336/9181 useless extension candidates. Maximal degree in co-relation 25781. Up to 6188 conditions per place. [2024-01-31 16:50:53,306 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 118 selfloop transitions, 8 changer transitions 1/131 dead transitions. [2024-01-31 16:50:53,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 131 transitions, 1118 flow [2024-01-31 16:50:53,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:50:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:50:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-31 16:50:53,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-31 16:50:53,308 INFO L175 Difference]: Start difference. First operand has 78 places, 90 transitions, 588 flow. Second operand 3 states and 78 transitions. [2024-01-31 16:50:53,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 131 transitions, 1118 flow [2024-01-31 16:50:53,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 1096 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:53,325 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 608 flow [2024-01-31 16:50:53,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=608, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-01-31 16:50:53,326 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-01-31 16:50:53,326 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 608 flow [2024-01-31 16:50:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:53,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:53,326 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 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 16:50:53,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:50:53,326 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:53,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:53,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2137690187, now seen corresponding path program 1 times [2024-01-31 16:50:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:53,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874091537] [2024-01-31 16:50:53,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:53,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:53,455 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-01-31 16:50:53,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:53,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874091537] [2024-01-31 16:50:53,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874091537] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:50:53,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:50:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:50:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591564204] [2024-01-31 16:50:53,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:50:53,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:50:53,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:50:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:50:53,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:50:53,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:50:53,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 608 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:53,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:50:53,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:50:53,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:50:54,888 INFO L124 PetriNetUnfolderBase]: 6652/10165 cut-off events. [2024-01-31 16:50:54,888 INFO L125 PetriNetUnfolderBase]: For 22456/22456 co-relation queries the response was YES. [2024-01-31 16:50:54,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30644 conditions, 10165 events. 6652/10165 cut-off events. For 22456/22456 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 62804 event pairs, 3735 based on Foata normal form. 232/10381 useless extension candidates. Maximal degree in co-relation 30621. Up to 7920 conditions per place. [2024-01-31 16:50:54,927 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 100 selfloop transitions, 8 changer transitions 1/113 dead transitions. [2024-01-31 16:50:54,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 921 flow [2024-01-31 16:50:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:50:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:50:54,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-01-31 16:50:54,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-01-31 16:50:54,929 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 608 flow. Second operand 3 states and 78 transitions. [2024-01-31 16:50:54,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 921 flow [2024-01-31 16:50:54,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 113 transitions, 910 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:50:54,947 INFO L231 Difference]: Finished difference. Result has 82 places, 91 transitions, 630 flow [2024-01-31 16:50:54,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=630, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2024-01-31 16:50:54,947 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2024-01-31 16:50:54,947 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 91 transitions, 630 flow [2024-01-31 16:50:54,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:50:54,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:50:54,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 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 16:50:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:50:54,948 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:50:54,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:50:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1993610671, now seen corresponding path program 1 times [2024-01-31 16:50:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:50:54,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546407043] [2024-01-31 16:50:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:50:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:50:59,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:50:59,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546407043] [2024-01-31 16:50:59,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546407043] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:50:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138682865] [2024-01-31 16:50:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:50:59,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:50:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:50:59,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:50:59,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 16:50:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:50:59,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 45 conjunts are in the unsatisfiable core [2024-01-31 16:50:59,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:00,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:51:00,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 231 treesize of output 307 [2024-01-31 16:51:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:51:01,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:51:03,451 INFO L349 Elim1Store]: treesize reduction 5, result has 95.9 percent of original size [2024-01-31 16:51:03,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 110 treesize of output 193 [2024-01-31 16:51:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:51:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138682865] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:51:03,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:51:03,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 29 [2024-01-31 16:51:03,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203129788] [2024-01-31 16:51:03,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:51:03,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-31 16:51:03,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:03,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-31 16:51:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2024-01-31 16:51:03,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:51:03,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 91 transitions, 630 flow. Second operand has 29 states, 29 states have (on average 10.448275862068966) internal successors, (303), 29 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:03,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:03,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:51:03,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:51:07,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-01-31 16:51:12,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-01-31 16:51:18,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-01-31 16:51:44,250 INFO L124 PetriNetUnfolderBase]: 28613/44373 cut-off events. [2024-01-31 16:51:44,251 INFO L125 PetriNetUnfolderBase]: For 92067/92067 co-relation queries the response was YES. [2024-01-31 16:51:44,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129510 conditions, 44373 events. 28613/44373 cut-off events. For 92067/92067 co-relation queries the response was YES. Maximal size of possible extension queue 1926. Compared 348095 event pairs, 3805 based on Foata normal form. 15/44374 useless extension candidates. Maximal degree in co-relation 129486. Up to 7701 conditions per place. [2024-01-31 16:51:44,602 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 781 selfloop transitions, 317 changer transitions 260/1362 dead transitions. [2024-01-31 16:51:44,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1362 transitions, 9166 flow [2024-01-31 16:51:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-01-31 16:51:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2024-01-31 16:51:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 1754 transitions. [2024-01-31 16:51:44,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36202270381836943 [2024-01-31 16:51:44,607 INFO L175 Difference]: Start difference. First operand has 82 places, 91 transitions, 630 flow. Second operand 95 states and 1754 transitions. [2024-01-31 16:51:44,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1362 transitions, 9166 flow [2024-01-31 16:51:44,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1362 transitions, 9077 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:51:44,736 INFO L231 Difference]: Finished difference. Result has 223 places, 449 transitions, 4552 flow [2024-01-31 16:51:44,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=4552, PETRI_PLACES=223, PETRI_TRANSITIONS=449} [2024-01-31 16:51:44,737 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 178 predicate places. [2024-01-31 16:51:44,737 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 449 transitions, 4552 flow [2024-01-31 16:51:44,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.448275862068966) internal successors, (303), 29 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:44,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:51:44,738 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 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 16:51:44,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 16:51:44,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-01-31 16:51:44,946 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:51:44,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:51:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1853738819, now seen corresponding path program 2 times [2024-01-31 16:51:44,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:51:44,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164177372] [2024-01-31 16:51:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:51:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:51:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:51:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:51:48,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:51:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164177372] [2024-01-31 16:51:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164177372] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 16:51:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807487795] [2024-01-31 16:51:48,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 16:51:48,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 16:51:48,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:51:48,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 16:51:48,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 16:51:49,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 16:51:49,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 16:51:49,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 51 conjunts are in the unsatisfiable core [2024-01-31 16:51:49,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 16:51:50,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:51:50,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 219 treesize of output 275 [2024-01-31 16:51:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:51:51,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 16:51:52,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 16:51:52,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 307 treesize of output 356 [2024-01-31 16:51:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-01-31 16:51:53,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807487795] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 16:51:53,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 16:51:53,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 32 [2024-01-31 16:51:53,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614200627] [2024-01-31 16:51:53,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 16:51:53,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-01-31 16:51:53,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:51:53,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-01-31 16:51:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=868, Unknown=0, NotChecked=0, Total=992 [2024-01-31 16:51:53,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 51 [2024-01-31 16:51:53,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 449 transitions, 4552 flow. Second operand has 32 states, 32 states have (on average 10.40625) internal successors, (333), 32 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:51:53,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:51:53,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 51 [2024-01-31 16:51:53,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand