./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:53,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:53,674 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:58:53,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:53,682 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:53,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:53,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:53,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:53,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:53,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:53,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:53,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:53,730 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:53,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:53,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:53,732 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:53,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:53,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:53,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:53,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:53,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:53,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:53,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:53,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:53,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:53,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:53,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:53,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:53,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:53,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:53,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:53,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:53,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:53,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:53,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:53,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:53,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:53,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:53,743 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:53,743 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_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f044966ade6b1d79627a5dcb577ad24e14a4ae2ab2467e458af5fa83aa6cd521 [2023-11-19 07:58:54,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:54,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:54,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:54,041 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:54,042 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:54,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-19 07:58:57,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:57,347 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:57,347 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2023-11-19 07:58:57,355 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/data/7f5b84da4/7ce59ae55d7a494a9e1a5fa5452467a0/FLAG4a7160706 [2023-11-19 07:58:57,369 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/data/7f5b84da4/7ce59ae55d7a494a9e1a5fa5452467a0 [2023-11-19 07:58:57,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:57,373 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:57,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:57,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:57,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:57,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@83f122e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57, skipping insertion in model container [2023-11-19 07:58:57,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,409 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:57,631 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_e2ec7474-7f7c-4a52-a66e-a778049f1921/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2023-11-19 07:58:57,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:57,651 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:57,684 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_e2ec7474-7f7c-4a52-a66e-a778049f1921/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[4028,4041] [2023-11-19 07:58:57,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:57,694 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:57,694 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:57,703 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:57,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57 WrapperNode [2023-11-19 07:58:57,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:57,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:57,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:57,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:57,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,758 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 251 [2023-11-19 07:58:57,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:57,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:57,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:57,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:57,771 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,775 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,794 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:57,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:57,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:57,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:57,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (1/1) ... [2023-11-19 07:58:57,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:57,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:57,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:57,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec7474-7f7c-4a52-a66e-a778049f1921/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:57,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:58:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:58:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:58:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:58:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:58:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:58:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:58:57,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:58:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-19 07:58:57,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-19 07:58:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:58:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:58:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:57,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:57,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:57,890 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:58:57,997 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:57,999 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:58,416 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:58,524 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:58,524 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:58:58,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:58 BoogieIcfgContainer [2023-11-19 07:58:58,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:58,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:58,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:58,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:58,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:57" (1/3) ... [2023-11-19 07:58:58,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6736fdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:58, skipping insertion in model container [2023-11-19 07:58:58,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:57" (2/3) ... [2023-11-19 07:58:58,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6736fdc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:58, skipping insertion in model container [2023-11-19 07:58:58,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:58" (3/3) ... [2023-11-19 07:58:58,539 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-11-19 07:58:58,548 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:58:58,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:58,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:58:58,560 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:58:58,696 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-11-19 07:58:58,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 175 transitions, 385 flow [2023-11-19 07:58:58,896 INFO L124 PetriNetUnfolderBase]: 2/170 cut-off events. [2023-11-19 07:58:58,901 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:58:58,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 170 events. 2/170 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 78 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-19 07:58:58,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 175 transitions, 385 flow [2023-11-19 07:58:58,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 155 transitions, 340 flow [2023-11-19 07:58:58,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:58:58,942 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 155 transitions, 340 flow [2023-11-19 07:58:58,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 155 transitions, 340 flow [2023-11-19 07:58:58,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 155 transitions, 340 flow [2023-11-19 07:58:59,000 INFO L124 PetriNetUnfolderBase]: 2/155 cut-off events. [2023-11-19 07:58:59,000 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:58:59,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 155 events. 2/155 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2023-11-19 07:58:59,005 INFO L119 LiptonReduction]: Number of co-enabled transitions 2560 [2023-11-19 07:59:07,026 INFO L134 LiptonReduction]: Checked pairs total: 11683 [2023-11-19 07:59:07,027 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-11-19 07:59:07,043 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:07,051 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2467b803, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:07,051 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:59:07,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:59:07,063 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2023-11-19 07:59:07,064 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:59:07,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:07,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:07,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:07,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 7097319, now seen corresponding path program 1 times [2023-11-19 07:59:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:07,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565629410] [2023-11-19 07:59:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:08,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565629410] [2023-11-19 07:59:08,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565629410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:08,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:08,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:08,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998716873] [2023-11-19 07:59:08,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:08,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:09,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:09,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 299 [2023-11-19 07:59:09,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:09,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 299 [2023-11-19 07:59:09,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:16,985 INFO L124 PetriNetUnfolderBase]: 53433/69727 cut-off events. [2023-11-19 07:59:16,987 INFO L125 PetriNetUnfolderBase]: For 4547/4547 co-relation queries the response was YES. [2023-11-19 07:59:17,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143512 conditions, 69727 events. 53433/69727 cut-off events. For 4547/4547 co-relation queries the response was YES. Maximal size of possible extension queue 1628. Compared 367233 event pairs, 17114 based on Foata normal form. 1/69728 useless extension candidates. Maximal degree in co-relation 124457. Up to 34631 conditions per place. [2023-11-19 07:59:17,674 INFO L140 encePairwiseOnDemand]: 291/299 looper letters, 101 selfloop transitions, 11 changer transitions 11/123 dead transitions. [2023-11-19 07:59:17,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 123 transitions, 567 flow [2023-11-19 07:59:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:17,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:59:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 809 transitions. [2023-11-19 07:59:17,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5411371237458193 [2023-11-19 07:59:17,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 809 transitions. [2023-11-19 07:59:17,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 809 transitions. [2023-11-19 07:59:17,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:17,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 809 transitions. [2023-11-19 07:59:17,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.8) internal successors, (809), 5 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:17,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:17,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:17,731 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 114 flow. Second operand 5 states and 809 transitions. [2023-11-19 07:59:17,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 123 transitions, 567 flow [2023-11-19 07:59:18,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 123 transitions, 517 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-11-19 07:59:18,068 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 170 flow [2023-11-19 07:59:18,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-11-19 07:59:18,074 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-11-19 07:59:18,074 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 170 flow [2023-11-19 07:59:18,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:18,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:18,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:18,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:18,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:18,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1562278089, now seen corresponding path program 2 times [2023-11-19 07:59:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174650640] [2023-11-19 07:59:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:18,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:18,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174650640] [2023-11-19 07:59:18,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174650640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:18,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:18,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:18,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628311365] [2023-11-19 07:59:18,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:18,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:18,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299 [2023-11-19 07:59:18,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 170 flow. Second operand has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:18,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:18,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299 [2023-11-19 07:59:18,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:21,725 INFO L124 PetriNetUnfolderBase]: 19221/27490 cut-off events. [2023-11-19 07:59:21,725 INFO L125 PetriNetUnfolderBase]: For 3313/5205 co-relation queries the response was YES. [2023-11-19 07:59:21,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59718 conditions, 27490 events. 19221/27490 cut-off events. For 3313/5205 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 179687 event pairs, 5645 based on Foata normal form. 32/25920 useless extension candidates. Maximal degree in co-relation 36527. Up to 20122 conditions per place. [2023-11-19 07:59:21,952 INFO L140 encePairwiseOnDemand]: 287/299 looper letters, 97 selfloop transitions, 46 changer transitions 0/158 dead transitions. [2023-11-19 07:59:21,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 158 transitions, 684 flow [2023-11-19 07:59:21,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:21,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:59:21,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1280 transitions. [2023-11-19 07:59:21,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351170568561873 [2023-11-19 07:59:21,962 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1280 transitions. [2023-11-19 07:59:21,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1280 transitions. [2023-11-19 07:59:21,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:21,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1280 transitions. [2023-11-19 07:59:21,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:21,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:21,977 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 299.0) internal successors, (2691), 9 states have internal predecessors, (2691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:21,977 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 170 flow. Second operand 8 states and 1280 transitions. [2023-11-19 07:59:21,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 158 transitions, 684 flow [2023-11-19 07:59:21,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 158 transitions, 671 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:21,996 INFO L231 Difference]: Finished difference. Result has 61 places, 100 transitions, 382 flow [2023-11-19 07:59:21,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=61, PETRI_TRANSITIONS=100} [2023-11-19 07:59:21,997 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-11-19 07:59:21,997 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 100 transitions, 382 flow [2023-11-19 07:59:21,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:21,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:21,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:21,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:59:21,999 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:22,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:22,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1807970739, now seen corresponding path program 3 times [2023-11-19 07:59:22,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:22,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370328810] [2023-11-19 07:59:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:22,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370328810] [2023-11-19 07:59:22,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370328810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:22,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:22,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:22,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872005221] [2023-11-19 07:59:22,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:22,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:59:22,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:59:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:22,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299 [2023-11-19 07:59:22,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 100 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:22,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:22,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299 [2023-11-19 07:59:22,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:25,101 INFO L124 PetriNetUnfolderBase]: 20992/30087 cut-off events. [2023-11-19 07:59:25,102 INFO L125 PetriNetUnfolderBase]: For 12469/16926 co-relation queries the response was YES. [2023-11-19 07:59:25,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80823 conditions, 30087 events. 20992/30087 cut-off events. For 12469/16926 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 199871 event pairs, 7286 based on Foata normal form. 482/28467 useless extension candidates. Maximal degree in co-relation 36385. Up to 20991 conditions per place. [2023-11-19 07:59:25,313 INFO L140 encePairwiseOnDemand]: 287/299 looper letters, 97 selfloop transitions, 49 changer transitions 0/161 dead transitions. [2023-11-19 07:59:25,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 161 transitions, 869 flow [2023-11-19 07:59:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:59:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:59:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 804 transitions. [2023-11-19 07:59:25,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377926421404682 [2023-11-19 07:59:25,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 804 transitions. [2023-11-19 07:59:25,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 804 transitions. [2023-11-19 07:59:25,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:25,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 804 transitions. [2023-11-19 07:59:25,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:25,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:25,327 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 299.0) internal successors, (1794), 6 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:25,327 INFO L175 Difference]: Start difference. First operand has 61 places, 100 transitions, 382 flow. Second operand 5 states and 804 transitions. [2023-11-19 07:59:25,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 161 transitions, 869 flow [2023-11-19 07:59:25,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 161 transitions, 869 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:59:25,361 INFO L231 Difference]: Finished difference. Result has 66 places, 115 transitions, 564 flow [2023-11-19 07:59:25,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=564, PETRI_PLACES=66, PETRI_TRANSITIONS=115} [2023-11-19 07:59:25,363 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-11-19 07:59:25,367 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 115 transitions, 564 flow [2023-11-19 07:59:25,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:25,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:25,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:25,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:59:25,370 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:25,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:25,372 INFO L85 PathProgramCache]: Analyzing trace with hash -548200745, now seen corresponding path program 4 times [2023-11-19 07:59:25,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:25,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252909817] [2023-11-19 07:59:25,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:25,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:26,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:26,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:26,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252909817] [2023-11-19 07:59:26,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252909817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:26,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:26,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:26,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382036869] [2023-11-19 07:59:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:26,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 299 [2023-11-19 07:59:26,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 115 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:26,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:26,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 299 [2023-11-19 07:59:26,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:32,225 INFO L124 PetriNetUnfolderBase]: 56628/74328 cut-off events. [2023-11-19 07:59:32,225 INFO L125 PetriNetUnfolderBase]: For 61757/61757 co-relation queries the response was YES. [2023-11-19 07:59:32,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225648 conditions, 74328 events. 56628/74328 cut-off events. For 61757/61757 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 403249 event pairs, 11089 based on Foata normal form. 1/74329 useless extension candidates. Maximal degree in co-relation 91238. Up to 36523 conditions per place. [2023-11-19 07:59:32,548 INFO L140 encePairwiseOnDemand]: 291/299 looper letters, 275 selfloop transitions, 15 changer transitions 37/327 dead transitions. [2023-11-19 07:59:32,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 327 transitions, 2211 flow [2023-11-19 07:59:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:32,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:59:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 968 transitions. [2023-11-19 07:59:32,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395763656633222 [2023-11-19 07:59:32,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 968 transitions. [2023-11-19 07:59:32,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 968 transitions. [2023-11-19 07:59:32,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:32,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 968 transitions. [2023-11-19 07:59:32,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,563 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,563 INFO L175 Difference]: Start difference. First operand has 66 places, 115 transitions, 564 flow. Second operand 6 states and 968 transitions. [2023-11-19 07:59:32,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 327 transitions, 2211 flow [2023-11-19 07:59:32,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 327 transitions, 2105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:32,807 INFO L231 Difference]: Finished difference. Result has 72 places, 117 transitions, 597 flow [2023-11-19 07:59:32,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=597, PETRI_PLACES=72, PETRI_TRANSITIONS=117} [2023-11-19 07:59:32,809 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-11-19 07:59:32,809 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 117 transitions, 597 flow [2023-11-19 07:59:32,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.0) internal successors, (864), 6 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:32,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:32,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:59:32,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:32,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash 873928367, now seen corresponding path program 5 times [2023-11-19 07:59:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:32,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108371264] [2023-11-19 07:59:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:32,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:33,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108371264] [2023-11-19 07:59:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108371264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:33,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:33,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:59:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311351251] [2023-11-19 07:59:33,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:33,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:33,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:33,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:33,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299 [2023-11-19 07:59:33,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 117 transitions, 597 flow. Second operand has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:33,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:33,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299 [2023-11-19 07:59:33,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:36,072 INFO L124 PetriNetUnfolderBase]: 20764/29977 cut-off events. [2023-11-19 07:59:36,072 INFO L125 PetriNetUnfolderBase]: For 36199/46266 co-relation queries the response was YES. [2023-11-19 07:59:36,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92098 conditions, 29977 events. 20764/29977 cut-off events. For 36199/46266 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 197532 event pairs, 4716 based on Foata normal form. 912/29240 useless extension candidates. Maximal degree in co-relation 54732. Up to 20539 conditions per place. [2023-11-19 07:59:36,303 INFO L140 encePairwiseOnDemand]: 287/299 looper letters, 97 selfloop transitions, 67 changer transitions 0/183 dead transitions. [2023-11-19 07:59:36,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 183 transitions, 1144 flow [2023-11-19 07:59:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:59:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2023-11-19 07:59:36,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365504061156235 [2023-11-19 07:59:36,310 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2023-11-19 07:59:36,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2023-11-19 07:59:36,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:36,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2023-11-19 07:59:36,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,324 INFO L175 Difference]: Start difference. First operand has 72 places, 117 transitions, 597 flow. Second operand 7 states and 1123 transitions. [2023-11-19 07:59:36,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 183 transitions, 1144 flow [2023-11-19 07:59:36,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 183 transitions, 1082 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-11-19 07:59:36,403 INFO L231 Difference]: Finished difference. Result has 73 places, 129 transitions, 755 flow [2023-11-19 07:59:36,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=755, PETRI_PLACES=73, PETRI_TRANSITIONS=129} [2023-11-19 07:59:36,404 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2023-11-19 07:59:36,404 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 129 transitions, 755 flow [2023-11-19 07:59:36,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:36,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:59:36,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:36,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:36,407 INFO L85 PathProgramCache]: Analyzing trace with hash -368004391, now seen corresponding path program 6 times [2023-11-19 07:59:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:36,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444222413] [2023-11-19 07:59:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:36,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:36,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:36,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:36,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444222413] [2023-11-19 07:59:36,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444222413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:36,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:36,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:36,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246113869] [2023-11-19 07:59:36,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:36,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:36,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:36,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:36,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:36,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299 [2023-11-19 07:59:36,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 129 transitions, 755 flow. Second operand has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:36,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:36,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299 [2023-11-19 07:59:36,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:39,833 INFO L124 PetriNetUnfolderBase]: 22095/31905 cut-off events. [2023-11-19 07:59:39,833 INFO L125 PetriNetUnfolderBase]: For 42274/51046 co-relation queries the response was YES. [2023-11-19 07:59:39,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97917 conditions, 31905 events. 22095/31905 cut-off events. For 42274/51046 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 211648 event pairs, 5775 based on Foata normal form. 1190/31306 useless extension candidates. Maximal degree in co-relation 42601. Up to 21062 conditions per place. [2023-11-19 07:59:40,046 INFO L140 encePairwiseOnDemand]: 287/299 looper letters, 97 selfloop transitions, 88 changer transitions 0/204 dead transitions. [2023-11-19 07:59:40,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 204 transitions, 1482 flow [2023-11-19 07:59:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:59:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 963 transitions. [2023-11-19 07:59:40,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367892976588629 [2023-11-19 07:59:40,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 963 transitions. [2023-11-19 07:59:40,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 963 transitions. [2023-11-19 07:59:40,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:40,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 963 transitions. [2023-11-19 07:59:40,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.5) internal successors, (963), 6 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) [2023-11-19 07:59:40,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:40,060 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:40,060 INFO L175 Difference]: Start difference. First operand has 73 places, 129 transitions, 755 flow. Second operand 6 states and 963 transitions. [2023-11-19 07:59:40,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 204 transitions, 1482 flow [2023-11-19 07:59:40,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 204 transitions, 1369 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:59:40,116 INFO L231 Difference]: Finished difference. Result has 75 places, 154 transitions, 1046 flow [2023-11-19 07:59:40,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1046, PETRI_PLACES=75, PETRI_TRANSITIONS=154} [2023-11-19 07:59:40,118 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-11-19 07:59:40,118 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 154 transitions, 1046 flow [2023-11-19 07:59:40,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:40,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:40,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:40,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:59:40,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:40,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:40,120 INFO L85 PathProgramCache]: Analyzing trace with hash 276592751, now seen corresponding path program 7 times [2023-11-19 07:59:40,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:40,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271079697] [2023-11-19 07:59:40,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:40,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:40,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:40,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271079697] [2023-11-19 07:59:40,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271079697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:40,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:40,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:59:40,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298068195] [2023-11-19 07:59:40,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:40,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:40,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:40,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:40,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:40,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 299 [2023-11-19 07:59:40,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 154 transitions, 1046 flow. Second operand has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:40,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:40,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 299 [2023-11-19 07:59:40,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:43,387 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([522] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][151], [Black: 194#(and (= ~x~0 0) (= ~b~0 (* (div ~b~0 256) 256))), 77#L93true, Black: 225#(= ~b~0 (* (div ~b~0 256) 256)), Black: 196#(and (<= ~b~0 (* (div ~b~0 256) 256)) (<= 0 ~b~0)), 109#L74true, 43#L131true, 246#true, 143#thread1EXITtrue, Black: 243#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 211#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 175#L112true, 82#L160-4true, 202#true, Black: 220#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 256#true, Black: 253#(and (<= 2 ~m3~0) (<= 2 ~t~0) (= ~s~0 0))]) [2023-11-19 07:59:43,388 INFO L294 olderBase$Statistics]: this new event has 27 ancestors and is cut-off event [2023-11-19 07:59:43,388 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:59:43,388 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:59:43,388 INFO L297 olderBase$Statistics]: existing Event has 27 ancestors and is cut-off event [2023-11-19 07:59:43,468 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([522] L128-->L131: Formula: (= v_~b~0_7 (ite (= (ite (or (= v_~x~0_6 1) (not (= 0 (mod v_~b~0_8 256)))) 1 0) 0) 0 1)) InVars {~b~0=v_~b~0_8, ~x~0=v_~x~0_6} OutVars{~b~0=v_~b~0_7, ~x~0=v_~x~0_6} AuxVars[] AssignedVars[~b~0][151], [99#L161-1true, 77#L93true, Black: 194#(and (= ~x~0 0) (= ~b~0 (* (div ~b~0 256) 256))), Black: 225#(= ~b~0 (* (div ~b~0 256) 256)), Black: 196#(and (<= ~b~0 (* (div ~b~0 256) 256)) (<= 0 ~b~0)), 109#L74true, 43#L131true, 246#true, 143#thread1EXITtrue, Black: 243#(and (<= 3 ~m4~0) (<= 3 ~t~0) (= ~s~0 0)), Black: 211#(and (<= 4 ~m5~0) (<= 4 ~t~0) (= ~s~0 0)), 175#L112true, 202#true, Black: 220#(and (<= 1 ~t~0) (<= 1 ~m2~0) (= ~s~0 0)), 256#true, Black: 253#(and (<= 2 ~m3~0) (<= 2 ~t~0) (= ~s~0 0))]) [2023-11-19 07:59:43,468 INFO L294 olderBase$Statistics]: this new event has 28 ancestors and is cut-off event [2023-11-19 07:59:43,468 INFO L297 olderBase$Statistics]: existing Event has 28 ancestors and is cut-off event [2023-11-19 07:59:43,468 INFO L297 olderBase$Statistics]: existing Event has 28 ancestors and is cut-off event [2023-11-19 07:59:43,468 INFO L297 olderBase$Statistics]: existing Event has 28 ancestors and is cut-off event [2023-11-19 07:59:43,654 INFO L124 PetriNetUnfolderBase]: 21850/32093 cut-off events. [2023-11-19 07:59:43,654 INFO L125 PetriNetUnfolderBase]: For 60281/69044 co-relation queries the response was YES. [2023-11-19 07:59:43,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100748 conditions, 32093 events. 21850/32093 cut-off events. For 60281/69044 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 219297 event pairs, 5516 based on Foata normal form. 1742/32130 useless extension candidates. Maximal degree in co-relation 46879. Up to 20471 conditions per place. [2023-11-19 07:59:43,865 INFO L140 encePairwiseOnDemand]: 287/299 looper letters, 95 selfloop transitions, 111 changer transitions 0/225 dead transitions. [2023-11-19 07:59:43,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 225 transitions, 1794 flow [2023-11-19 07:59:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:43,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:59:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1121 transitions. [2023-11-19 07:59:43,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535594839942666 [2023-11-19 07:59:43,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1121 transitions. [2023-11-19 07:59:43,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1121 transitions. [2023-11-19 07:59:43,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:43,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1121 transitions. [2023-11-19 07:59:43,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,880 INFO L175 Difference]: Start difference. First operand has 75 places, 154 transitions, 1046 flow. Second operand 7 states and 1121 transitions. [2023-11-19 07:59:43,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 225 transitions, 1794 flow [2023-11-19 07:59:43,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 225 transitions, 1680 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:59:43,929 INFO L231 Difference]: Finished difference. Result has 79 places, 173 transitions, 1369 flow [2023-11-19 07:59:43,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=299, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1369, PETRI_PLACES=79, PETRI_TRANSITIONS=173} [2023-11-19 07:59:43,930 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 21 predicate places. [2023-11-19 07:59:43,930 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 173 transitions, 1369 flow [2023-11-19 07:59:43,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.14285714285714) internal successors, (1030), 7 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:43,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:43,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:59:43,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:59:43,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash 945199879, now seen corresponding path program 8 times [2023-11-19 07:59:43,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:43,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011275639] [2023-11-19 07:59:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:43,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat