./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:25:29,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:25:29,575 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:25:29,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:25:29,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:25:29,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:25:29,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:25:29,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:25:29,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:25:29,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:25:29,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:25:29,611 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:25:29,612 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:25:29,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:25:29,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:25:29,613 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:25:29,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:25:29,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:25:29,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:25:29,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:25:29,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:25:29,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:25:29,617 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:25:29,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:25:29,618 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:25:29,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:25:29,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:25:29,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:25:29,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:25:29,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:25:29,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:25:29,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:25:29,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:25:29,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:25:29,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:25:29,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:25:29,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:25:29,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:25:29,623 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:25:29,623 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a686a41ee4cc6bbffea13719827ccaf379a83824b0020cd9f2e7eecebabb9242 [2023-11-06 22:25:29,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:25:29,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:25:29,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:25:29,930 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:25:29,931 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:25:29,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-06 22:25:33,098 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:25:33,337 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:25:33,338 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/sv-benchmarks/c/weaver/test-easy11.wvr.c [2023-11-06 22:25:33,349 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/data/727668e5b/8e00785c59cf4307a2ecb42cc99d7777/FLAG1d51af628 [2023-11-06 22:25:33,369 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/data/727668e5b/8e00785c59cf4307a2ecb42cc99d7777 [2023-11-06 22:25:33,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:25:33,380 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:25:33,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:25:33,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:25:33,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:25:33,393 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,394 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aff21c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33, skipping insertion in model container [2023-11-06 22:25:33,394 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,425 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:25:33,702 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2023-11-06 22:25:33,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:25:33,716 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:25:33,747 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/sv-benchmarks/c/weaver/test-easy11.wvr.c[2005,2018] [2023-11-06 22:25:33,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:25:33,759 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:25:33,760 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:25:33,767 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:25:33,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33 WrapperNode [2023-11-06 22:25:33,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:25:33,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:25:33,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:25:33,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:25:33,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,808 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-06 22:25:33,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:25:33,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:25:33,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:25:33,810 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:25:33,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,822 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,822 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,832 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,835 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:25:33,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:25:33,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:25:33,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:25:33,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (1/1) ... [2023-11-06 22:25:33,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:25:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:33,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:25:33,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:25:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:25:33,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:25:33,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:25:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:25:33,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:25:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:25:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:25:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:25:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:25:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:25:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:25:33,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:25:33,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:25:33,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:25:33,945 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:25:34,060 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:25:34,062 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:25:34,255 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:25:34,264 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:25:34,265 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:25:34,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:34 BoogieIcfgContainer [2023-11-06 22:25:34,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:25:34,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:25:34,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:25:34,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:25:34,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:25:33" (1/3) ... [2023-11-06 22:25:34,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e40efba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:34, skipping insertion in model container [2023-11-06 22:25:34,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:25:33" (2/3) ... [2023-11-06 22:25:34,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e40efba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:25:34, skipping insertion in model container [2023-11-06 22:25:34,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:34" (3/3) ... [2023-11-06 22:25:34,280 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-11-06 22:25:34,292 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:25:34,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:25:34,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:25:34,307 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:25:34,415 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:25:34,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 182 flow [2023-11-06 22:25:34,513 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-11-06 22:25:34,514 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:25:34,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 6/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-11-06 22:25:34,519 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 182 flow [2023-11-06 22:25:34,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 73 transitions, 158 flow [2023-11-06 22:25:34,529 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:25:34,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 73 transitions, 158 flow [2023-11-06 22:25:34,543 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 73 transitions, 158 flow [2023-11-06 22:25:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 158 flow [2023-11-06 22:25:34,573 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2023-11-06 22:25:34,573 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:25:34,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 6/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-11-06 22:25:34,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 572 [2023-11-06 22:25:37,324 INFO L134 LiptonReduction]: Checked pairs total: 581 [2023-11-06 22:25:37,324 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-11-06 22:25:37,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:25:37,358 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@7a13debd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:25:37,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-06 22:25:37,370 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:25:37,370 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-06 22:25:37,370 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:25:37,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:37,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:37,372 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:37,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1758174257, now seen corresponding path program 1 times [2023-11-06 22:25:37,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:37,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239021339] [2023-11-06 22:25:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:37,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:37,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:37,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239021339] [2023-11-06 22:25:37,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239021339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:37,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:37,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:37,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789659904] [2023-11-06 22:25:37,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:25:37,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:38,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:25:38,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:38,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 152 [2023-11-06 22:25:38,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:38,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:38,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 152 [2023-11-06 22:25:38,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:38,417 INFO L124 PetriNetUnfolderBase]: 42/82 cut-off events. [2023-11-06 22:25:38,418 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:25:38,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 82 events. 42/82 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 170 event pairs, 7 based on Foata normal form. 1/65 useless extension candidates. Maximal degree in co-relation 132. Up to 34 conditions per place. [2023-11-06 22:25:38,424 INFO L140 encePairwiseOnDemand]: 145/152 looper letters, 23 selfloop transitions, 8 changer transitions 5/36 dead transitions. [2023-11-06 22:25:38,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 36 transitions, 165 flow [2023-11-06 22:25:38,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 471 transitions. [2023-11-06 22:25:38,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426691729323308 [2023-11-06 22:25:38,462 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 471 transitions. [2023-11-06 22:25:38,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 471 transitions. [2023-11-06 22:25:38,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:38,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 471 transitions. [2023-11-06 22:25:38,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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) [2023-11-06 22:25:38,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:38,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:38,487 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 7 states and 471 transitions. [2023-11-06 22:25:38,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 36 transitions, 165 flow [2023-11-06 22:25:38,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:38,493 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 84 flow [2023-11-06 22:25:38,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=84, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-11-06 22:25:38,500 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2023-11-06 22:25:38,500 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 84 flow [2023-11-06 22:25:38,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:38,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:38,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:38,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:25:38,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:38,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1106405427, now seen corresponding path program 2 times [2023-11-06 22:25:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:38,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830675320] [2023-11-06 22:25:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:38,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:38,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:38,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830675320] [2023-11-06 22:25:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830675320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:38,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:38,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:38,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789058278] [2023-11-06 22:25:38,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:38,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:25:38,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:25:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:38,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 152 [2023-11-06 22:25:38,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 84 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:38,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:38,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 152 [2023-11-06 22:25:38,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:39,091 INFO L124 PetriNetUnfolderBase]: 47/91 cut-off events. [2023-11-06 22:25:39,092 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-06 22:25:39,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 91 events. 47/91 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 217 event pairs, 1 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 251. Up to 25 conditions per place. [2023-11-06 22:25:39,094 INFO L140 encePairwiseOnDemand]: 145/152 looper letters, 30 selfloop transitions, 9 changer transitions 5/44 dead transitions. [2023-11-06 22:25:39,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 236 flow [2023-11-06 22:25:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 477 transitions. [2023-11-06 22:25:39,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483082706766917 [2023-11-06 22:25:39,098 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 477 transitions. [2023-11-06 22:25:39,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 477 transitions. [2023-11-06 22:25:39,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:39,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 477 transitions. [2023-11-06 22:25:39,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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) [2023-11-06 22:25:39,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:39,110 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:39,110 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 84 flow. Second operand 7 states and 477 transitions. [2023-11-06 22:25:39,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 236 flow [2023-11-06 22:25:39,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 228 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:39,115 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 108 flow [2023-11-06 22:25:39,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=108, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-06 22:25:39,117 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2023-11-06 22:25:39,117 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 108 flow [2023-11-06 22:25:39,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:39,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:39,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:25:39,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:39,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:39,125 INFO L85 PathProgramCache]: Analyzing trace with hash -961571583, now seen corresponding path program 3 times [2023-11-06 22:25:39,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:39,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888985170] [2023-11-06 22:25:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:39,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:39,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:39,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888985170] [2023-11-06 22:25:39,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888985170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:39,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:39,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:39,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070137144] [2023-11-06 22:25:39,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:39,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:25:39,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:25:39,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:39,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 152 [2023-11-06 22:25:39,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:39,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:39,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 152 [2023-11-06 22:25:39,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:39,563 INFO L124 PetriNetUnfolderBase]: 57/107 cut-off events. [2023-11-06 22:25:39,564 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-06 22:25:39,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 107 events. 57/107 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 254 event pairs, 5 based on Foata normal form. 1/108 useless extension candidates. Maximal degree in co-relation 336. Up to 60 conditions per place. [2023-11-06 22:25:39,569 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 28 selfloop transitions, 12 changer transitions 5/45 dead transitions. [2023-11-06 22:25:39,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 45 transitions, 276 flow [2023-11-06 22:25:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 477 transitions. [2023-11-06 22:25:39,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483082706766917 [2023-11-06 22:25:39,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 477 transitions. [2023-11-06 22:25:39,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 477 transitions. [2023-11-06 22:25:39,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:39,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 477 transitions. [2023-11-06 22:25:39,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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) [2023-11-06 22:25:39,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:39,581 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:39,581 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 108 flow. Second operand 7 states and 477 transitions. [2023-11-06 22:25:39,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 45 transitions, 276 flow [2023-11-06 22:25:39,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 241 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-06 22:25:39,587 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 158 flow [2023-11-06 22:25:39,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=158, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-11-06 22:25:39,589 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2023-11-06 22:25:39,592 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 158 flow [2023-11-06 22:25:39,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:39,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:39,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:39,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:25:39,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:39,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash 325873009, now seen corresponding path program 4 times [2023-11-06 22:25:39,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:39,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411423934] [2023-11-06 22:25:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:39,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:39,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:39,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411423934] [2023-11-06 22:25:39,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411423934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:39,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:39,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:39,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222727502] [2023-11-06 22:25:39,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:39,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:25:39,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:25:39,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:39,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 152 [2023-11-06 22:25:39,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:39,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:39,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 152 [2023-11-06 22:25:39,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:40,062 INFO L124 PetriNetUnfolderBase]: 63/117 cut-off events. [2023-11-06 22:25:40,062 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-06 22:25:40,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 117 events. 63/117 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 294 event pairs, 5 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 405. Up to 69 conditions per place. [2023-11-06 22:25:40,067 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 31 selfloop transitions, 15 changer transitions 5/51 dead transitions. [2023-11-06 22:25:40,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 356 flow [2023-11-06 22:25:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 477 transitions. [2023-11-06 22:25:40,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483082706766917 [2023-11-06 22:25:40,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 477 transitions. [2023-11-06 22:25:40,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 477 transitions. [2023-11-06 22:25:40,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:40,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 477 transitions. [2023-11-06 22:25:40,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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) [2023-11-06 22:25:40,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:40,079 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:40,079 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 158 flow. Second operand 7 states and 477 transitions. [2023-11-06 22:25:40,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 356 flow [2023-11-06 22:25:40,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 320 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:40,087 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 224 flow [2023-11-06 22:25:40,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-11-06 22:25:40,089 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2023-11-06 22:25:40,090 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 224 flow [2023-11-06 22:25:40,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:40,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:40,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:40,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:25:40,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:40,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:40,092 INFO L85 PathProgramCache]: Analyzing trace with hash -389585619, now seen corresponding path program 5 times [2023-11-06 22:25:40,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:40,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939376654] [2023-11-06 22:25:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:40,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:40,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939376654] [2023-11-06 22:25:40,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939376654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:40,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:40,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696260294] [2023-11-06 22:25:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:40,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:25:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:25:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:40,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 152 [2023-11-06 22:25:40,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:40,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:40,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 152 [2023-11-06 22:25:40,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:40,550 INFO L124 PetriNetUnfolderBase]: 68/126 cut-off events. [2023-11-06 22:25:40,550 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2023-11-06 22:25:40,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 126 events. 68/126 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 323 event pairs, 5 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 487. Up to 74 conditions per place. [2023-11-06 22:25:40,552 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 34 selfloop transitions, 15 changer transitions 5/54 dead transitions. [2023-11-06 22:25:40,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 410 flow [2023-11-06 22:25:40,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:40,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:40,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 479 transitions. [2023-11-06 22:25:40,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450187969924812 [2023-11-06 22:25:40,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 479 transitions. [2023-11-06 22:25:40,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 479 transitions. [2023-11-06 22:25:40,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:40,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 479 transitions. [2023-11-06 22:25:40,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 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) [2023-11-06 22:25:40,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:40,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:40,561 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 224 flow. Second operand 7 states and 479 transitions. [2023-11-06 22:25:40,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 410 flow [2023-11-06 22:25:40,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 366 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:40,566 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 228 flow [2023-11-06 22:25:40,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-06 22:25:40,567 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2023-11-06 22:25:40,567 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 228 flow [2023-11-06 22:25:40,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:40,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:40,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:40,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:25:40,568 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:40,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:40,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2081321415, now seen corresponding path program 6 times [2023-11-06 22:25:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:40,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016574522] [2023-11-06 22:25:40,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:40,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:40,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016574522] [2023-11-06 22:25:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016574522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:40,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808733269] [2023-11-06 22:25:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:40,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:25:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:40,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:25:40,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:40,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 152 [2023-11-06 22:25:40,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:40,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:40,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 152 [2023-11-06 22:25:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:40,984 INFO L124 PetriNetUnfolderBase]: 67/127 cut-off events. [2023-11-06 22:25:40,984 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2023-11-06 22:25:40,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 127 events. 67/127 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 329 event pairs, 9 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 501. Up to 79 conditions per place. [2023-11-06 22:25:40,986 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 31 selfloop transitions, 15 changer transitions 5/51 dead transitions. [2023-11-06 22:25:40,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 400 flow [2023-11-06 22:25:40,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 475 transitions. [2023-11-06 22:25:40,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2023-11-06 22:25:40,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 475 transitions. [2023-11-06 22:25:40,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 475 transitions. [2023-11-06 22:25:40,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:40,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 475 transitions. [2023-11-06 22:25:40,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 67.85714285714286) internal successors, (475), 7 states have internal predecessors, (475), 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) [2023-11-06 22:25:40,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:40,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:40,998 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 228 flow. Second operand 7 states and 475 transitions. [2023-11-06 22:25:40,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 400 flow [2023-11-06 22:25:41,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 360 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-06 22:25:41,002 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 236 flow [2023-11-06 22:25:41,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-11-06 22:25:41,003 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 26 predicate places. [2023-11-06 22:25:41,004 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 236 flow [2023-11-06 22:25:41,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 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) [2023-11-06 22:25:41,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:41,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:41,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:25:41,005 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:41,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash 931821442, now seen corresponding path program 1 times [2023-11-06 22:25:41,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:41,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039170015] [2023-11-06 22:25:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039170015] [2023-11-06 22:25:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039170015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:41,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:41,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:41,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759393355] [2023-11-06 22:25:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:41,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:41,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:41,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:41,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:41,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:41,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:41,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:41,295 INFO L124 PetriNetUnfolderBase]: 104/195 cut-off events. [2023-11-06 22:25:41,296 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2023-11-06 22:25:41,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791 conditions, 195 events. 104/195 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 628 event pairs, 16 based on Foata normal form. 4/193 useless extension candidates. Maximal degree in co-relation 771. Up to 78 conditions per place. [2023-11-06 22:25:41,299 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 46 selfloop transitions, 22 changer transitions 4/72 dead transitions. [2023-11-06 22:25:41,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 72 transitions, 572 flow [2023-11-06 22:25:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 487 transitions. [2023-11-06 22:25:41,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45770676691729323 [2023-11-06 22:25:41,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 487 transitions. [2023-11-06 22:25:41,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 487 transitions. [2023-11-06 22:25:41,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:41,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 487 transitions. [2023-11-06 22:25:41,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2023-11-06 22:25:41,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:41,311 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:41,311 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 236 flow. Second operand 7 states and 487 transitions. [2023-11-06 22:25:41,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 72 transitions, 572 flow [2023-11-06 22:25:41,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 518 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-06 22:25:41,317 INFO L231 Difference]: Finished difference. Result has 50 places, 47 transitions, 362 flow [2023-11-06 22:25:41,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=50, PETRI_TRANSITIONS=47} [2023-11-06 22:25:41,319 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 30 predicate places. [2023-11-06 22:25:41,320 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 47 transitions, 362 flow [2023-11-06 22:25:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:41,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:41,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:41,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:25:41,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:41,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:41,322 INFO L85 PathProgramCache]: Analyzing trace with hash 801330302, now seen corresponding path program 2 times [2023-11-06 22:25:41,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:41,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425859622] [2023-11-06 22:25:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:41,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:41,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:41,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425859622] [2023-11-06 22:25:41,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425859622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:41,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:41,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:41,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818545901] [2023-11-06 22:25:41,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:41,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:41,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:41,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:41,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:41,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 47 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:41,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:41,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:41,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:41,618 INFO L124 PetriNetUnfolderBase]: 108/211 cut-off events. [2023-11-06 22:25:41,618 INFO L125 PetriNetUnfolderBase]: For 1051/1051 co-relation queries the response was YES. [2023-11-06 22:25:41,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 211 events. 108/211 cut-off events. For 1051/1051 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 707 event pairs, 16 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 863. Up to 80 conditions per place. [2023-11-06 22:25:41,622 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 58 selfloop transitions, 25 changer transitions 1/84 dead transitions. [2023-11-06 22:25:41,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 739 flow [2023-11-06 22:25:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:25:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:25:41,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 563 transitions. [2023-11-06 22:25:41,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4629934210526316 [2023-11-06 22:25:41,626 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 563 transitions. [2023-11-06 22:25:41,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 563 transitions. [2023-11-06 22:25:41,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:41,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 563 transitions. [2023-11-06 22:25:41,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.375) internal successors, (563), 8 states have internal predecessors, (563), 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) [2023-11-06 22:25:41,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 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) [2023-11-06 22:25:41,633 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 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) [2023-11-06 22:25:41,633 INFO L175 Difference]: Start difference. First operand has 50 places, 47 transitions, 362 flow. Second operand 8 states and 563 transitions. [2023-11-06 22:25:41,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 739 flow [2023-11-06 22:25:41,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 697 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:41,642 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 485 flow [2023-11-06 22:25:41,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-11-06 22:25:41,647 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 39 predicate places. [2023-11-06 22:25:41,647 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 485 flow [2023-11-06 22:25:41,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:41,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:41,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:41,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:25:41,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:41,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:41,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1255879302, now seen corresponding path program 1 times [2023-11-06 22:25:41,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:41,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452843669] [2023-11-06 22:25:41,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:41,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:41,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:41,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452843669] [2023-11-06 22:25:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452843669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:41,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885006562] [2023-11-06 22:25:41,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:41,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:41,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:41,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 485 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:41,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:41,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:41,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:41,943 INFO L124 PetriNetUnfolderBase]: 123/246 cut-off events. [2023-11-06 22:25:41,944 INFO L125 PetriNetUnfolderBase]: For 1457/1457 co-relation queries the response was YES. [2023-11-06 22:25:41,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1245 conditions, 246 events. 123/246 cut-off events. For 1457/1457 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 901 event pairs, 6 based on Foata normal form. 6/252 useless extension candidates. Maximal degree in co-relation 1047. Up to 77 conditions per place. [2023-11-06 22:25:41,948 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 51 selfloop transitions, 20 changer transitions 2/73 dead transitions. [2023-11-06 22:25:41,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 73 transitions, 772 flow [2023-11-06 22:25:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:25:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:25:41,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 419 transitions. [2023-11-06 22:25:41,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594298245614035 [2023-11-06 22:25:41,951 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 419 transitions. [2023-11-06 22:25:41,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 419 transitions. [2023-11-06 22:25:41,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:41,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 419 transitions. [2023-11-06 22:25:41,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.83333333333333) internal successors, (419), 6 states have internal predecessors, (419), 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) [2023-11-06 22:25:41,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2023-11-06 22:25:41,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2023-11-06 22:25:41,958 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 485 flow. Second operand 6 states and 419 transitions. [2023-11-06 22:25:41,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 73 transitions, 772 flow [2023-11-06 22:25:41,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 723 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:41,970 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 543 flow [2023-11-06 22:25:41,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=543, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-11-06 22:25:41,971 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 46 predicate places. [2023-11-06 22:25:41,972 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 543 flow [2023-11-06 22:25:41,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:41,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:41,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:41,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:25:41,973 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:41,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1255284656, now seen corresponding path program 2 times [2023-11-06 22:25:41,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:41,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656045187] [2023-11-06 22:25:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:42,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:42,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656045187] [2023-11-06 22:25:42,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656045187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:42,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:42,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:42,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134142318] [2023-11-06 22:25:42,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:42,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:42,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:42,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:42,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:42,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:42,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 543 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:42,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:42,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:42,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:42,253 INFO L124 PetriNetUnfolderBase]: 121/242 cut-off events. [2023-11-06 22:25:42,253 INFO L125 PetriNetUnfolderBase]: For 1929/1929 co-relation queries the response was YES. [2023-11-06 22:25:42,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 242 events. 121/242 cut-off events. For 1929/1929 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 869 event pairs, 16 based on Foata normal form. 6/248 useless extension candidates. Maximal degree in co-relation 1239. Up to 199 conditions per place. [2023-11-06 22:25:42,257 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 51 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-11-06 22:25:42,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 719 flow [2023-11-06 22:25:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:25:42,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:25:42,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 349 transitions. [2023-11-06 22:25:42,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45921052631578946 [2023-11-06 22:25:42,260 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 349 transitions. [2023-11-06 22:25:42,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 349 transitions. [2023-11-06 22:25:42,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:42,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 349 transitions. [2023-11-06 22:25:42,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 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) [2023-11-06 22:25:42,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2023-11-06 22:25:42,265 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2023-11-06 22:25:42,266 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 543 flow. Second operand 5 states and 349 transitions. [2023-11-06 22:25:42,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 719 flow [2023-11-06 22:25:42,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 665 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:42,282 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 520 flow [2023-11-06 22:25:42,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2023-11-06 22:25:42,283 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 46 predicate places. [2023-11-06 22:25:42,283 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 520 flow [2023-11-06 22:25:42,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:42,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:42,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:42,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:25:42,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:42,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:42,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1190495688, now seen corresponding path program 3 times [2023-11-06 22:25:42,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:42,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679545341] [2023-11-06 22:25:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:42,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:42,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:42,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679545341] [2023-11-06 22:25:42,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679545341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:42,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:42,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:42,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045720207] [2023-11-06 22:25:42,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:42,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:42,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:42,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:42,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:42,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:42,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 520 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:42,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:42,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:42,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:42,557 INFO L124 PetriNetUnfolderBase]: 115/226 cut-off events. [2023-11-06 22:25:42,557 INFO L125 PetriNetUnfolderBase]: For 1727/1727 co-relation queries the response was YES. [2023-11-06 22:25:42,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 226 events. 115/226 cut-off events. For 1727/1727 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 769 event pairs, 35 based on Foata normal form. 4/230 useless extension candidates. Maximal degree in co-relation 1151. Up to 147 conditions per place. [2023-11-06 22:25:42,561 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 51 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-11-06 22:25:42,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 701 flow [2023-11-06 22:25:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:25:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:25:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 350 transitions. [2023-11-06 22:25:42,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2023-11-06 22:25:42,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 350 transitions. [2023-11-06 22:25:42,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 350 transitions. [2023-11-06 22:25:42,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:42,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 350 transitions. [2023-11-06 22:25:42,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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) [2023-11-06 22:25:42,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2023-11-06 22:25:42,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2023-11-06 22:25:42,569 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 520 flow. Second operand 5 states and 350 transitions. [2023-11-06 22:25:42,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 701 flow [2023-11-06 22:25:42,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 651 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:42,579 INFO L231 Difference]: Finished difference. Result has 68 places, 52 transitions, 493 flow [2023-11-06 22:25:42,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=493, PETRI_PLACES=68, PETRI_TRANSITIONS=52} [2023-11-06 22:25:42,580 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2023-11-06 22:25:42,581 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 52 transitions, 493 flow [2023-11-06 22:25:42,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:42,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:42,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:42,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:25:42,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:42,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:42,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2013273726, now seen corresponding path program 4 times [2023-11-06 22:25:42,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:42,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574561025] [2023-11-06 22:25:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:42,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:42,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:42,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574561025] [2023-11-06 22:25:42,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574561025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:42,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:42,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:42,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60009594] [2023-11-06 22:25:42,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:42,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:42,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:42,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:42,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:42,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 52 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:42,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:42,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:42,847 INFO L124 PetriNetUnfolderBase]: 105/206 cut-off events. [2023-11-06 22:25:42,847 INFO L125 PetriNetUnfolderBase]: For 1272/1272 co-relation queries the response was YES. [2023-11-06 22:25:42,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 206 events. 105/206 cut-off events. For 1272/1272 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 673 event pairs, 11 based on Foata normal form. 4/210 useless extension candidates. Maximal degree in co-relation 1003. Up to 132 conditions per place. [2023-11-06 22:25:42,851 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 51 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2023-11-06 22:25:42,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 660 flow [2023-11-06 22:25:42,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:25:42,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:25:42,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 352 transitions. [2023-11-06 22:25:42,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2023-11-06 22:25:42,854 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 352 transitions. [2023-11-06 22:25:42,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 352 transitions. [2023-11-06 22:25:42,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:42,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 352 transitions. [2023-11-06 22:25:42,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 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) [2023-11-06 22:25:42,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2023-11-06 22:25:42,860 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 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) [2023-11-06 22:25:42,860 INFO L175 Difference]: Start difference. First operand has 68 places, 52 transitions, 493 flow. Second operand 5 states and 352 transitions. [2023-11-06 22:25:42,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 660 flow [2023-11-06 22:25:42,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 631 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:42,869 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 479 flow [2023-11-06 22:25:42,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=479, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2023-11-06 22:25:42,871 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 49 predicate places. [2023-11-06 22:25:42,871 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 479 flow [2023-11-06 22:25:42,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:42,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:42,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:42,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:25:42,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:42,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash -349021680, now seen corresponding path program 3 times [2023-11-06 22:25:42,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:42,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476337566] [2023-11-06 22:25:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:42,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:42,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:42,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476337566] [2023-11-06 22:25:42,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476337566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:42,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:42,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:42,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573819054] [2023-11-06 22:25:42,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:42,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:42,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:42,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:42,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:42,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:42,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:42,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:43,182 INFO L124 PetriNetUnfolderBase]: 139/276 cut-off events. [2023-11-06 22:25:43,182 INFO L125 PetriNetUnfolderBase]: For 1637/1637 co-relation queries the response was YES. [2023-11-06 22:25:43,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 276 events. 139/276 cut-off events. For 1637/1637 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1038 event pairs, 26 based on Foata normal form. 2/278 useless extension candidates. Maximal degree in co-relation 1337. Up to 97 conditions per place. [2023-11-06 22:25:43,187 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 55 selfloop transitions, 26 changer transitions 2/83 dead transitions. [2023-11-06 22:25:43,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 899 flow [2023-11-06 22:25:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:25:43,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:25:43,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 483 transitions. [2023-11-06 22:25:43,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2023-11-06 22:25:43,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 483 transitions. [2023-11-06 22:25:43,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 483 transitions. [2023-11-06 22:25:43,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:43,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 483 transitions. [2023-11-06 22:25:43,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 69.0) internal successors, (483), 7 states have internal predecessors, (483), 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) [2023-11-06 22:25:43,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:43,197 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 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) [2023-11-06 22:25:43,197 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 479 flow. Second operand 7 states and 483 transitions. [2023-11-06 22:25:43,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 899 flow [2023-11-06 22:25:43,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 871 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:43,213 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 676 flow [2023-11-06 22:25:43,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=676, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-11-06 22:25:43,214 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-11-06 22:25:43,214 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 676 flow [2023-11-06 22:25:43,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:43,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:43,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:43,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:25:43,216 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:43,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash -164681420, now seen corresponding path program 4 times [2023-11-06 22:25:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593676682] [2023-11-06 22:25:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:43,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:43,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593676682] [2023-11-06 22:25:43,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593676682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:43,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:43,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:43,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033195451] [2023-11-06 22:25:43,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:43,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:43,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:43,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:43,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:43,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:43,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 676 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:43,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:43,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:43,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:43,562 INFO L124 PetriNetUnfolderBase]: 131/256 cut-off events. [2023-11-06 22:25:43,562 INFO L125 PetriNetUnfolderBase]: For 1963/1963 co-relation queries the response was YES. [2023-11-06 22:25:43,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 256 events. 131/256 cut-off events. For 1963/1963 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 915 event pairs, 22 based on Foata normal form. 4/260 useless extension candidates. Maximal degree in co-relation 1401. Up to 92 conditions per place. [2023-11-06 22:25:43,567 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 58 selfloop transitions, 27 changer transitions 1/86 dead transitions. [2023-11-06 22:25:43,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 995 flow [2023-11-06 22:25:43,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:25:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:25:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2023-11-06 22:25:43,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564144736842105 [2023-11-06 22:25:43,571 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2023-11-06 22:25:43,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2023-11-06 22:25:43,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:43,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2023-11-06 22:25:43,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 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) [2023-11-06 22:25:43,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 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) [2023-11-06 22:25:43,578 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 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) [2023-11-06 22:25:43,578 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 676 flow. Second operand 8 states and 555 transitions. [2023-11-06 22:25:43,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 995 flow [2023-11-06 22:25:43,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 958 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-06 22:25:43,593 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 733 flow [2023-11-06 22:25:43,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=733, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2023-11-06 22:25:43,594 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 62 predicate places. [2023-11-06 22:25:43,594 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 733 flow [2023-11-06 22:25:43,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:43,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:43,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:43,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:25:43,596 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:43,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1877334774, now seen corresponding path program 5 times [2023-11-06 22:25:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:43,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256598324] [2023-11-06 22:25:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:43,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:43,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256598324] [2023-11-06 22:25:43,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256598324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:25:43,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:25:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:25:43,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941646183] [2023-11-06 22:25:43,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:43,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:43,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:25:43,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:43,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 733 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:43,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:43,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:43,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:43,886 INFO L124 PetriNetUnfolderBase]: 116/229 cut-off events. [2023-11-06 22:25:43,886 INFO L125 PetriNetUnfolderBase]: For 1856/1856 co-relation queries the response was YES. [2023-11-06 22:25:43,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 229 events. 116/229 cut-off events. For 1856/1856 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 789 event pairs, 9 based on Foata normal form. 8/237 useless extension candidates. Maximal degree in co-relation 1161. Up to 102 conditions per place. [2023-11-06 22:25:43,890 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 54 selfloop transitions, 19 changer transitions 2/75 dead transitions. [2023-11-06 22:25:43,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 931 flow [2023-11-06 22:25:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:25:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:25:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 418 transitions. [2023-11-06 22:25:43,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-11-06 22:25:43,894 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 418 transitions. [2023-11-06 22:25:43,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 418 transitions. [2023-11-06 22:25:43,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:43,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 418 transitions. [2023-11-06 22:25:43,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.66666666666667) internal successors, (418), 6 states have internal predecessors, (418), 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) [2023-11-06 22:25:43,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2023-11-06 22:25:43,900 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2023-11-06 22:25:43,900 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 733 flow. Second operand 6 states and 418 transitions. [2023-11-06 22:25:43,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 931 flow [2023-11-06 22:25:43,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 869 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-06 22:25:43,915 INFO L231 Difference]: Finished difference. Result has 82 places, 57 transitions, 639 flow [2023-11-06 22:25:43,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=639, PETRI_PLACES=82, PETRI_TRANSITIONS=57} [2023-11-06 22:25:43,917 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 62 predicate places. [2023-11-06 22:25:43,917 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 57 transitions, 639 flow [2023-11-06 22:25:43,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:43,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:43,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:43,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:25:43,918 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:43,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:43,919 INFO L85 PathProgramCache]: Analyzing trace with hash -238958284, now seen corresponding path program 5 times [2023-11-06 22:25:43,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:43,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391393426] [2023-11-06 22:25:43,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:43,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:43,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:43,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391393426] [2023-11-06 22:25:43,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391393426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767460094] [2023-11-06 22:25:43,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:25:43,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:43,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:43,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:43,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:25:44,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:44,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:44,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:25:44,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:44,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:44,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:44,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767460094] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:44,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:25:44,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2023-11-06 22:25:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214900052] [2023-11-06 22:25:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:25:44,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:25:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:25:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:25:44,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 152 [2023-11-06 22:25:44,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 57 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:44,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:44,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 152 [2023-11-06 22:25:44,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:44,404 INFO L124 PetriNetUnfolderBase]: 111/212 cut-off events. [2023-11-06 22:25:44,404 INFO L125 PetriNetUnfolderBase]: For 1916/1916 co-relation queries the response was YES. [2023-11-06 22:25:44,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 212 events. 111/212 cut-off events. For 1916/1916 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 687 event pairs, 22 based on Foata normal form. 6/218 useless extension candidates. Maximal degree in co-relation 1159. Up to 132 conditions per place. [2023-11-06 22:25:44,408 INFO L140 encePairwiseOnDemand]: 145/152 looper letters, 51 selfloop transitions, 24 changer transitions 0/75 dead transitions. [2023-11-06 22:25:44,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 852 flow [2023-11-06 22:25:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:25:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:25:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 422 transitions. [2023-11-06 22:25:44,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2023-11-06 22:25:44,415 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 422 transitions. [2023-11-06 22:25:44,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 422 transitions. [2023-11-06 22:25:44,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:44,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 422 transitions. [2023-11-06 22:25:44,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 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) [2023-11-06 22:25:44,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2023-11-06 22:25:44,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 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) [2023-11-06 22:25:44,421 INFO L175 Difference]: Start difference. First operand has 82 places, 57 transitions, 639 flow. Second operand 6 states and 422 transitions. [2023-11-06 22:25:44,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 852 flow [2023-11-06 22:25:44,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 75 transitions, 780 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-11-06 22:25:44,434 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 623 flow [2023-11-06 22:25:44,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2023-11-06 22:25:44,435 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 57 predicate places. [2023-11-06 22:25:44,435 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 623 flow [2023-11-06 22:25:44,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 65.8) internal successors, (329), 5 states have internal predecessors, (329), 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) [2023-11-06 22:25:44,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:44,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:44,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:44,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:25:44,643 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:44,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1548202443, now seen corresponding path program 1 times [2023-11-06 22:25:44,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:44,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479968713] [2023-11-06 22:25:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479968713] [2023-11-06 22:25:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479968713] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605224451] [2023-11-06 22:25:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:44,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:44,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:25:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:44,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:44,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:45,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:45,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:45,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605224451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:45,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:45,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:25:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114705030] [2023-11-06 22:25:45,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:45,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:25:45,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:25:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:25:45,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:45,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 623 flow. Second operand has 18 states, 18 states have (on average 61.94444444444444) internal successors, (1115), 18 states have internal predecessors, (1115), 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) [2023-11-06 22:25:45,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:45,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:45,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:46,301 INFO L124 PetriNetUnfolderBase]: 116/218 cut-off events. [2023-11-06 22:25:46,301 INFO L125 PetriNetUnfolderBase]: For 1518/1518 co-relation queries the response was YES. [2023-11-06 22:25:46,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 218 events. 116/218 cut-off events. For 1518/1518 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 715 event pairs, 2 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 1028. Up to 53 conditions per place. [2023-11-06 22:25:46,305 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 41 selfloop transitions, 21 changer transitions 26/88 dead transitions. [2023-11-06 22:25:46,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 88 transitions, 976 flow [2023-11-06 22:25:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:25:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:25:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 719 transitions. [2023-11-06 22:25:46,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4300239234449761 [2023-11-06 22:25:46,308 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 719 transitions. [2023-11-06 22:25:46,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 719 transitions. [2023-11-06 22:25:46,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:46,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 719 transitions. [2023-11-06 22:25:46,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 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) [2023-11-06 22:25:46,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 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) [2023-11-06 22:25:46,316 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 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) [2023-11-06 22:25:46,316 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 623 flow. Second operand 11 states and 719 transitions. [2023-11-06 22:25:46,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 88 transitions, 976 flow [2023-11-06 22:25:46,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 961 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:25:46,335 INFO L231 Difference]: Finished difference. Result has 88 places, 46 transitions, 529 flow [2023-11-06 22:25:46,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=529, PETRI_PLACES=88, PETRI_TRANSITIONS=46} [2023-11-06 22:25:46,336 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 68 predicate places. [2023-11-06 22:25:46,336 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 46 transitions, 529 flow [2023-11-06 22:25:46,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.94444444444444) internal successors, (1115), 18 states have internal predecessors, (1115), 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) [2023-11-06 22:25:46,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:46,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:46,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:46,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:25:46,544 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:46,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:46,545 INFO L85 PathProgramCache]: Analyzing trace with hash 179013563, now seen corresponding path program 2 times [2023-11-06 22:25:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:46,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116611049] [2023-11-06 22:25:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:46,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:46,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116611049] [2023-11-06 22:25:46,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116611049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:46,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893925428] [2023-11-06 22:25:46,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:46,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:46,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:46,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:25:46,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:46,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:46,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:46,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:46,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:47,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893925428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:47,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:47,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:25:47,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484078408] [2023-11-06 22:25:47,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:47,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:25:47,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:47,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:25:47,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:25:47,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:47,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 46 transitions, 529 flow. Second operand has 18 states, 18 states have (on average 61.666666666666664) internal successors, (1110), 18 states have internal predecessors, (1110), 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) [2023-11-06 22:25:47,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:47,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:47,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:47,931 INFO L124 PetriNetUnfolderBase]: 90/178 cut-off events. [2023-11-06 22:25:47,931 INFO L125 PetriNetUnfolderBase]: For 1466/1466 co-relation queries the response was YES. [2023-11-06 22:25:47,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 178 events. 90/178 cut-off events. For 1466/1466 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 537 event pairs, 2 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 1050. Up to 55 conditions per place. [2023-11-06 22:25:47,934 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 45 selfloop transitions, 26 changer transitions 9/80 dead transitions. [2023-11-06 22:25:47,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 80 transitions, 912 flow [2023-11-06 22:25:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:25:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:25:47,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 718 transitions. [2023-11-06 22:25:47,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42942583732057416 [2023-11-06 22:25:47,939 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 718 transitions. [2023-11-06 22:25:47,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 718 transitions. [2023-11-06 22:25:47,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:47,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 718 transitions. [2023-11-06 22:25:47,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.27272727272727) internal successors, (718), 11 states have internal predecessors, (718), 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) [2023-11-06 22:25:47,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 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) [2023-11-06 22:25:47,953 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 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) [2023-11-06 22:25:47,954 INFO L175 Difference]: Start difference. First operand has 88 places, 46 transitions, 529 flow. Second operand 11 states and 718 transitions. [2023-11-06 22:25:47,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 80 transitions, 912 flow [2023-11-06 22:25:47,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 782 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-11-06 22:25:47,966 INFO L231 Difference]: Finished difference. Result has 75 places, 49 transitions, 537 flow [2023-11-06 22:25:47,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=75, PETRI_TRANSITIONS=49} [2023-11-06 22:25:47,967 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-11-06 22:25:47,967 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 49 transitions, 537 flow [2023-11-06 22:25:47,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.666666666666664) internal successors, (1110), 18 states have internal predecessors, (1110), 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) [2023-11-06 22:25:47,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:47,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:47,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:48,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:25:48,175 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:48,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash 253885073, now seen corresponding path program 3 times [2023-11-06 22:25:48,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:48,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185717641] [2023-11-06 22:25:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185717641] [2023-11-06 22:25:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185717641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365042291] [2023-11-06 22:25:48,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:25:48,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:48,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:48,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:48,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:25:48,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-06 22:25:48,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:48,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:48,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:48,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:48,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365042291] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:48,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:48,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:25:48,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809453036] [2023-11-06 22:25:48,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:48,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:25:48,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:25:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:25:49,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:49,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 49 transitions, 537 flow. Second operand has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:49,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:49,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:49,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:49,637 INFO L124 PetriNetUnfolderBase]: 84/173 cut-off events. [2023-11-06 22:25:49,638 INFO L125 PetriNetUnfolderBase]: For 821/821 co-relation queries the response was YES. [2023-11-06 22:25:49,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1000 conditions, 173 events. 84/173 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 2 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 970. Up to 55 conditions per place. [2023-11-06 22:25:49,640 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 33 selfloop transitions, 15 changer transitions 26/74 dead transitions. [2023-11-06 22:25:49,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 810 flow [2023-11-06 22:25:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:25:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:25:49,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 712 transitions. [2023-11-06 22:25:49,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2023-11-06 22:25:49,646 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 712 transitions. [2023-11-06 22:25:49,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 712 transitions. [2023-11-06 22:25:49,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:49,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 712 transitions. [2023-11-06 22:25:49,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 64.72727272727273) internal successors, (712), 11 states have internal predecessors, (712), 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) [2023-11-06 22:25:49,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 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) [2023-11-06 22:25:49,657 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 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) [2023-11-06 22:25:49,657 INFO L175 Difference]: Start difference. First operand has 75 places, 49 transitions, 537 flow. Second operand 11 states and 712 transitions. [2023-11-06 22:25:49,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 810 flow [2023-11-06 22:25:49,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 74 transitions, 757 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-11-06 22:25:49,667 INFO L231 Difference]: Finished difference. Result has 77 places, 37 transitions, 372 flow [2023-11-06 22:25:49,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=372, PETRI_PLACES=77, PETRI_TRANSITIONS=37} [2023-11-06 22:25:49,668 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 57 predicate places. [2023-11-06 22:25:49,668 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 37 transitions, 372 flow [2023-11-06 22:25:49,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:49,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:49,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:49,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:49,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:49,876 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:49,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash 482000959, now seen corresponding path program 4 times [2023-11-06 22:25:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175305349] [2023-11-06 22:25:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:50,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:50,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175305349] [2023-11-06 22:25:50,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175305349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:50,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823408305] [2023-11-06 22:25:50,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:25:50,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:50,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:50,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:50,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:25:50,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:25:50,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:50,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:50,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:50,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:50,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823408305] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:50,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:50,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-06 22:25:50,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641672433] [2023-11-06 22:25:50,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:50,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:25:50,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:50,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:25:50,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:25:50,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:50,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 37 transitions, 372 flow. Second operand has 15 states, 15 states have (on average 61.53333333333333) internal successors, (923), 15 states have internal predecessors, (923), 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) [2023-11-06 22:25:50,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:50,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:50,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:51,353 INFO L124 PetriNetUnfolderBase]: 67/145 cut-off events. [2023-11-06 22:25:51,353 INFO L125 PetriNetUnfolderBase]: For 749/749 co-relation queries the response was YES. [2023-11-06 22:25:51,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 145 events. 67/145 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 432 event pairs, 1 based on Foata normal form. 1/146 useless extension candidates. Maximal degree in co-relation 787. Up to 35 conditions per place. [2023-11-06 22:25:51,356 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 32 selfloop transitions, 28 changer transitions 12/72 dead transitions. [2023-11-06 22:25:51,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 72 transitions, 748 flow [2023-11-06 22:25:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:25:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:25:51,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 963 transitions. [2023-11-06 22:25:51,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42236842105263156 [2023-11-06 22:25:51,360 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 963 transitions. [2023-11-06 22:25:51,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 963 transitions. [2023-11-06 22:25:51,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:51,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 963 transitions. [2023-11-06 22:25:51,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 64.2) internal successors, (963), 15 states have internal predecessors, (963), 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) [2023-11-06 22:25:51,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 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) [2023-11-06 22:25:51,371 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 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) [2023-11-06 22:25:51,371 INFO L175 Difference]: Start difference. First operand has 77 places, 37 transitions, 372 flow. Second operand 15 states and 963 transitions. [2023-11-06 22:25:51,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 72 transitions, 748 flow [2023-11-06 22:25:51,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 665 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-06 22:25:51,379 INFO L231 Difference]: Finished difference. Result has 74 places, 43 transitions, 457 flow [2023-11-06 22:25:51,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=457, PETRI_PLACES=74, PETRI_TRANSITIONS=43} [2023-11-06 22:25:51,380 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 54 predicate places. [2023-11-06 22:25:51,380 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 43 transitions, 457 flow [2023-11-06 22:25:51,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 61.53333333333333) internal successors, (923), 15 states have internal predecessors, (923), 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) [2023-11-06 22:25:51,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:51,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:51,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:51,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:51,595 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:51,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 407724095, now seen corresponding path program 5 times [2023-11-06 22:25:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465082160] [2023-11-06 22:25:51,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:51,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465082160] [2023-11-06 22:25:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465082160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:51,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650927130] [2023-11-06 22:25:51,830 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:25:51,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:51,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:51,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:25:51,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-06 22:25:51,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:51,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:25:51,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:52,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:52,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:52,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650927130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:52,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:52,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2023-11-06 22:25:52,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491451424] [2023-11-06 22:25:52,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:52,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 22:25:52,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:52,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 22:25:52,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-06 22:25:52,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:52,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 43 transitions, 457 flow. Second operand has 15 states, 15 states have (on average 61.93333333333333) internal successors, (929), 15 states have internal predecessors, (929), 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) [2023-11-06 22:25:52,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:52,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:52,730 INFO L124 PetriNetUnfolderBase]: 60/134 cut-off events. [2023-11-06 22:25:52,730 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2023-11-06 22:25:52,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 134 events. 60/134 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 399 event pairs, 1 based on Foata normal form. 7/141 useless extension candidates. Maximal degree in co-relation 753. Up to 44 conditions per place. [2023-11-06 22:25:52,732 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 32 selfloop transitions, 21 changer transitions 16/69 dead transitions. [2023-11-06 22:25:52,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 69 transitions, 716 flow [2023-11-06 22:25:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:25:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:25:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 899 transitions. [2023-11-06 22:25:52,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224624060150376 [2023-11-06 22:25:52,736 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 899 transitions. [2023-11-06 22:25:52,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 899 transitions. [2023-11-06 22:25:52,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:52,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 899 transitions. [2023-11-06 22:25:52,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 64.21428571428571) internal successors, (899), 14 states have internal predecessors, (899), 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) [2023-11-06 22:25:52,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 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) [2023-11-06 22:25:52,744 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 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) [2023-11-06 22:25:52,744 INFO L175 Difference]: Start difference. First operand has 74 places, 43 transitions, 457 flow. Second operand 14 states and 899 transitions. [2023-11-06 22:25:52,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 69 transitions, 716 flow [2023-11-06 22:25:52,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 69 transitions, 631 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-11-06 22:25:52,754 INFO L231 Difference]: Finished difference. Result has 80 places, 40 transitions, 380 flow [2023-11-06 22:25:52,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=380, PETRI_PLACES=80, PETRI_TRANSITIONS=40} [2023-11-06 22:25:52,754 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2023-11-06 22:25:52,755 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 40 transitions, 380 flow [2023-11-06 22:25:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 61.93333333333333) internal successors, (929), 15 states have internal predecessors, (929), 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) [2023-11-06 22:25:52,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:52,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:52,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:52,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:25:52,961 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:52,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:52,962 INFO L85 PathProgramCache]: Analyzing trace with hash 482595605, now seen corresponding path program 6 times [2023-11-06 22:25:52,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763847562] [2023-11-06 22:25:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:52,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:53,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:53,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763847562] [2023-11-06 22:25:53,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763847562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:53,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217261454] [2023-11-06 22:25:53,154 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:25:53,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:53,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:53,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:53,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:25:53,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 22:25:53,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:53,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:53,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:53,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:53,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:53,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217261454] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:53,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:53,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-06 22:25:53,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800340898] [2023-11-06 22:25:53,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:53,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:25:53,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:53,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:25:53,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:25:53,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:53,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 40 transitions, 380 flow. Second operand has 16 states, 16 states have (on average 61.5) internal successors, (984), 16 states have internal predecessors, (984), 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) [2023-11-06 22:25:53,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:53,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:53,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:54,434 INFO L124 PetriNetUnfolderBase]: 55/123 cut-off events. [2023-11-06 22:25:54,435 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-11-06 22:25:54,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 123 events. 55/123 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 338 event pairs, 1 based on Foata normal form. 1/124 useless extension candidates. Maximal degree in co-relation 673. Up to 37 conditions per place. [2023-11-06 22:25:54,437 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 32 selfloop transitions, 21 changer transitions 10/63 dead transitions. [2023-11-06 22:25:54,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 63 transitions, 627 flow [2023-11-06 22:25:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:25:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 22:25:54,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 892 transitions. [2023-11-06 22:25:54,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191729323308271 [2023-11-06 22:25:54,441 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 892 transitions. [2023-11-06 22:25:54,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 892 transitions. [2023-11-06 22:25:54,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:54,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 892 transitions. [2023-11-06 22:25:54,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 63.714285714285715) internal successors, (892), 14 states have internal predecessors, (892), 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) [2023-11-06 22:25:54,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 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) [2023-11-06 22:25:54,449 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 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) [2023-11-06 22:25:54,449 INFO L175 Difference]: Start difference. First operand has 80 places, 40 transitions, 380 flow. Second operand 14 states and 892 transitions. [2023-11-06 22:25:54,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 63 transitions, 627 flow [2023-11-06 22:25:54,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 549 flow, removed 4 selfloop flow, removed 14 redundant places. [2023-11-06 22:25:54,457 INFO L231 Difference]: Finished difference. Result has 78 places, 40 transitions, 371 flow [2023-11-06 22:25:54,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=371, PETRI_PLACES=78, PETRI_TRANSITIONS=40} [2023-11-06 22:25:54,458 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2023-11-06 22:25:54,458 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 40 transitions, 371 flow [2023-11-06 22:25:54,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 61.5) internal successors, (984), 16 states have internal predecessors, (984), 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) [2023-11-06 22:25:54,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:54,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:54,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:54,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:25:54,666 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:54,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1906833275, now seen corresponding path program 7 times [2023-11-06 22:25:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:54,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55371381] [2023-11-06 22:25:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:54,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:54,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55371381] [2023-11-06 22:25:54,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55371381] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:54,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003812354] [2023-11-06 22:25:54,842 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:25:54,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:54,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:54,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:54,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:25:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:54,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:54,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:55,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:55,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:55,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003812354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:55,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:55,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:25:55,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499023124] [2023-11-06 22:25:55,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:55,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:25:55,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:25:55,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:25:55,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:55,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 40 transitions, 371 flow. Second operand has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:55,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:55,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:55,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:55,896 INFO L124 PetriNetUnfolderBase]: 59/131 cut-off events. [2023-11-06 22:25:55,896 INFO L125 PetriNetUnfolderBase]: For 542/542 co-relation queries the response was YES. [2023-11-06 22:25:55,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 131 events. 59/131 cut-off events. For 542/542 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 375 event pairs, 3 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 689. Up to 34 conditions per place. [2023-11-06 22:25:55,900 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 31 selfloop transitions, 15 changer transitions 13/59 dead transitions. [2023-11-06 22:25:55,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 59 transitions, 612 flow [2023-11-06 22:25:55,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:25:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:25:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 638 transitions. [2023-11-06 22:25:55,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41973684210526313 [2023-11-06 22:25:55,903 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 638 transitions. [2023-11-06 22:25:55,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 638 transitions. [2023-11-06 22:25:55,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:55,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 638 transitions. [2023-11-06 22:25:55,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.8) internal successors, (638), 10 states have internal predecessors, (638), 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) [2023-11-06 22:25:55,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 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) [2023-11-06 22:25:55,910 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 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) [2023-11-06 22:25:55,910 INFO L175 Difference]: Start difference. First operand has 78 places, 40 transitions, 371 flow. Second operand 10 states and 638 transitions. [2023-11-06 22:25:55,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 59 transitions, 612 flow [2023-11-06 22:25:55,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 59 transitions, 560 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-06 22:25:55,918 INFO L231 Difference]: Finished difference. Result has 77 places, 39 transitions, 356 flow [2023-11-06 22:25:55,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=77, PETRI_TRANSITIONS=39} [2023-11-06 22:25:55,919 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 57 predicate places. [2023-11-06 22:25:55,919 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 39 transitions, 356 flow [2023-11-06 22:25:55,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:55,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:55,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:55,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:56,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:25:56,129 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:56,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:56,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1907427921, now seen corresponding path program 8 times [2023-11-06 22:25:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:56,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238898040] [2023-11-06 22:25:56,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:56,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:56,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:56,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238898040] [2023-11-06 22:25:56,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238898040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:56,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653017087] [2023-11-06 22:25:56,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:25:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:56,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:56,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:25:56,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:25:56,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:56,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:56,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:56,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:56,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653017087] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:56,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:56,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:25:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105968056] [2023-11-06 22:25:56,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:56,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:25:56,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:56,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:25:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:25:57,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:57,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 39 transitions, 356 flow. Second operand has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:57,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:57,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:57,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:57,402 INFO L124 PetriNetUnfolderBase]: 52/117 cut-off events. [2023-11-06 22:25:57,403 INFO L125 PetriNetUnfolderBase]: For 501/501 co-relation queries the response was YES. [2023-11-06 22:25:57,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 117 events. 52/117 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 309 event pairs, 3 based on Foata normal form. 2/119 useless extension candidates. Maximal degree in co-relation 621. Up to 27 conditions per place. [2023-11-06 22:25:57,404 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 22 selfloop transitions, 10 changer transitions 22/54 dead transitions. [2023-11-06 22:25:57,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 54 transitions, 547 flow [2023-11-06 22:25:57,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:25:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:25:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 638 transitions. [2023-11-06 22:25:57,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41973684210526313 [2023-11-06 22:25:57,407 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 638 transitions. [2023-11-06 22:25:57,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 638 transitions. [2023-11-06 22:25:57,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:57,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 638 transitions. [2023-11-06 22:25:57,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.8) internal successors, (638), 10 states have internal predecessors, (638), 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) [2023-11-06 22:25:57,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 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) [2023-11-06 22:25:57,413 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 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) [2023-11-06 22:25:57,413 INFO L175 Difference]: Start difference. First operand has 77 places, 39 transitions, 356 flow. Second operand 10 states and 638 transitions. [2023-11-06 22:25:57,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 54 transitions, 547 flow [2023-11-06 22:25:57,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 54 transitions, 516 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 22:25:57,420 INFO L231 Difference]: Finished difference. Result has 76 places, 28 transitions, 230 flow [2023-11-06 22:25:57,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=230, PETRI_PLACES=76, PETRI_TRANSITIONS=28} [2023-11-06 22:25:57,421 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2023-11-06 22:25:57,421 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 28 transitions, 230 flow [2023-11-06 22:25:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:57,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:25:57,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:25:57,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:25:57,629 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-06 22:25:57,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:25:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1722493015, now seen corresponding path program 9 times [2023-11-06 22:25:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:25:57,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111709549] [2023-11-06 22:25:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:25:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:25:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:25:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:57,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:25:57,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111709549] [2023-11-06 22:25:57,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111709549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:25:57,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673781025] [2023-11-06 22:25:57,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:25:57,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:57,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:25:57,798 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:25:57,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:25:57,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:25:57,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:25:57,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:25:57,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:25:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:58,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:25:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:25:58,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673781025] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:25:58,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:25:58,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 22:25:58,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691529078] [2023-11-06 22:25:58,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:25:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:25:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:25:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:25:58,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:25:58,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 152 [2023-11-06 22:25:58,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 28 transitions, 230 flow. Second operand has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:58,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:25:58,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 152 [2023-11-06 22:25:58,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:25:58,796 INFO L124 PetriNetUnfolderBase]: 29/69 cut-off events. [2023-11-06 22:25:58,796 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-11-06 22:25:58,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 69 events. 29/69 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 3 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 349. Up to 18 conditions per place. [2023-11-06 22:25:58,797 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-11-06 22:25:58,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 33 transitions, 304 flow [2023-11-06 22:25:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:25:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:25:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 566 transitions. [2023-11-06 22:25:58,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137426900584795 [2023-11-06 22:25:58,799 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 566 transitions. [2023-11-06 22:25:58,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 566 transitions. [2023-11-06 22:25:58,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:25:58,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 566 transitions. [2023-11-06 22:25:58,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.888888888888886) internal successors, (566), 9 states have internal predecessors, (566), 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) [2023-11-06 22:25:58,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 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) [2023-11-06 22:25:58,806 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 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) [2023-11-06 22:25:58,806 INFO L175 Difference]: Start difference. First operand has 76 places, 28 transitions, 230 flow. Second operand 9 states and 566 transitions. [2023-11-06 22:25:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 33 transitions, 304 flow [2023-11-06 22:25:58,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 33 transitions, 257 flow, removed 3 selfloop flow, removed 13 redundant places. [2023-11-06 22:25:58,810 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2023-11-06 22:25:58,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2023-11-06 22:25:58,811 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 42 predicate places. [2023-11-06 22:25:58,811 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2023-11-06 22:25:58,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.44444444444444) internal successors, (1106), 18 states have internal predecessors, (1106), 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) [2023-11-06 22:25:58,815 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-06 22:25:58,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-06 22:25:58,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-06 22:25:58,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:25:59,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:25:59,023 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 5, 5] [2023-11-06 22:25:59,028 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:25:59,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:25:59,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:25:59 BasicIcfg [2023-11-06 22:25:59,032 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:25:59,033 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:25:59,033 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:25:59,033 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:25:59,034 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:25:34" (3/4) ... [2023-11-06 22:25:59,036 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:25:59,042 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:25:59,042 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:25:59,047 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-06 22:25:59,047 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:25:59,048 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:25:59,048 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:25:59,109 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:25:59,110 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:25:59,110 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:25:59,111 INFO L158 Benchmark]: Toolchain (without parser) took 25731.31ms. Allocated memory was 184.5MB in the beginning and 323.0MB in the end (delta: 138.4MB). Free memory was 143.9MB in the beginning and 211.5MB in the end (delta: -67.6MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2023-11-06 22:25:59,111 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:25:59,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.81ms. Allocated memory is still 184.5MB. Free memory was 143.3MB in the beginning and 150.2MB in the end (delta: -6.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:25:59,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.46ms. Allocated memory is still 184.5MB. Free memory was 150.2MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:25:59,113 INFO L158 Benchmark]: Boogie Preprocessor took 26.31ms. Allocated memory is still 184.5MB. Free memory was 148.6MB in the beginning and 147.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:25:59,113 INFO L158 Benchmark]: RCFGBuilder took 431.82ms. Allocated memory is still 184.5MB. Free memory was 147.6MB in the beginning and 135.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:25:59,114 INFO L158 Benchmark]: TraceAbstraction took 24760.95ms. Allocated memory was 184.5MB in the beginning and 323.0MB in the end (delta: 138.4MB). Free memory was 134.4MB in the beginning and 214.4MB in the end (delta: -80.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2023-11-06 22:25:59,114 INFO L158 Benchmark]: Witness Printer took 77.18ms. Allocated memory is still 323.0MB. Free memory was 214.4MB in the beginning and 211.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:25:59,120 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.81ms. Allocated memory is still 184.5MB. Free memory was 143.3MB in the beginning and 150.2MB in the end (delta: -6.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.46ms. Allocated memory is still 184.5MB. Free memory was 150.2MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.31ms. Allocated memory is still 184.5MB. Free memory was 148.6MB in the beginning and 147.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.82ms. Allocated memory is still 184.5MB. Free memory was 147.6MB in the beginning and 135.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 24760.95ms. Allocated memory was 184.5MB in the beginning and 323.0MB in the end (delta: 138.4MB). Free memory was 134.4MB in the beginning and 214.4MB in the end (delta: -80.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. * Witness Printer took 77.18ms. Allocated memory is still 323.0MB. Free memory was 214.4MB in the beginning and 211.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 74 PlacesBefore, 20 PlacesAfterwards, 73 TransitionsBefore, 15 TransitionsAfterwards, 572 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 68 TotalNumberOfCompositions, 581 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 568, independent: 556, independent conditional: 0, independent unconditional: 556, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 309, independent: 307, independent conditional: 0, independent unconditional: 307, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 568, independent: 249, independent conditional: 0, independent unconditional: 249, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 309, unknown conditional: 0, unknown unconditional: 309] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 79]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.6s, OverallIterations: 25, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2346 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1959 mSDsluCounter, 1706 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1601 mSDsCounter, 293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8060 IncrementalHoareTripleChecker+Invalid, 8353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 293 mSolverCounterUnsat, 105 mSDtfsCounter, 8060 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 539 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=733occurred in iteration=14, InterpolantAutomatonStates: 210, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 502 NumberOfCodeBlocks, 502 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 606 ConstructedInterpolants, 0 QuantifiedInterpolants, 3286 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1057 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 45 InterpolantComputations, 16 PerfectInterpolantSequences, 11/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:25:59,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4b4ddc-879d-4069-8af8-64377809dc0e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE