./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe028_power.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe028_power.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU --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 0d78821bc3a287b999f98be361d707254bd2fa61b63b525cf42d392168336d80 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:11:55,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:11:55,720 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:11:55,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:11:55,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:11:55,765 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:11:55,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:11:55,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:11:55,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:11:55,770 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:11:55,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:11:55,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:11:55,773 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:11:55,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:11:55,777 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:11:55,778 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:11:55,778 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:11:55,779 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:11:55,779 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:11:55,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:11:55,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:11:55,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:11:55,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:11:55,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:11:55,781 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:11:55,781 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:11:55,782 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:11:55,782 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:11:55,784 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:11:55,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:11:55,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:11:55,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:11:55,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:55,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:11:55,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:11:55,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:11:55,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:11:55,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:11:55,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:11:55,790 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:11:55,790 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:11:55,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:11:55,791 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_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d78821bc3a287b999f98be361d707254bd2fa61b63b525cf42d392168336d80 [2024-10-31 22:11:56,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:11:56,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:11:56,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:11:56,168 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:11:56,169 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:11:56,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe028_power.i Unable to find full path for "g++" [2024-10-31 22:11:58,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:58,667 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:58,668 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/sv-benchmarks/c/pthread-wmm/safe028_power.i [2024-10-31 22:11:58,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/data/75a145b32/1c7f495a04b04ca5b9035888b5f291e5/FLAGa0866dab1 [2024-10-31 22:11:58,712 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/data/75a145b32/1c7f495a04b04ca5b9035888b5f291e5 [2024-10-31 22:11:58,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:58,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:58,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:58,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:58,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:58,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:58" (1/1) ... [2024-10-31 22:11:58,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc59a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:58, skipping insertion in model container [2024-10-31 22:11:58,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:58" (1/1) ... [2024-10-31 22:11:58,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:59,074 WARN L251 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_97577e5c-a22a-4b3b-ab52-f807551ba9ef/sv-benchmarks/c/pthread-wmm/safe028_power.i[990,1003] [2024-10-31 22:11:59,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:59,348 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:59,365 WARN L251 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_97577e5c-a22a-4b3b-ab52-f807551ba9ef/sv-benchmarks/c/pthread-wmm/safe028_power.i[990,1003] [2024-10-31 22:11:59,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:59,558 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:59,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59 WrapperNode [2024-10-31 22:11:59,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:59,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:59,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:59,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:59,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,697 INFO L138 Inliner]: procedures = 175, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2024-10-31 22:11:59,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:59,698 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:59,698 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:59,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:59,719 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,726 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,771 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 7 writes are split as follows [0, 7]. [2024-10-31 22:11:59,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,807 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,809 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:59,815 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:59,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:59,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:59,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (1/1) ... [2024-10-31 22:11:59,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:59,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:59,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:59,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97577e5c-a22a-4b3b-ab52-f807551ba9ef/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:59,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:11:59,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:11:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:11:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:11:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:11:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:11:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:11:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:11:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:11:59,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:11:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:11:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:11:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:11:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:11:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:11:59,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:59,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:59,942 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:12:00,191 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:12:00,193 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:12:00,929 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:12:00,930 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:12:01,430 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:12:01,430 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:12:01,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:01 BoogieIcfgContainer [2024-10-31 22:12:01,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:12:01,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:12:01,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:12:01,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:12:01,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:11:58" (1/3) ... [2024-10-31 22:12:01,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792881c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:01, skipping insertion in model container [2024-10-31 22:12:01,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:59" (2/3) ... [2024-10-31 22:12:01,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792881c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:12:01, skipping insertion in model container [2024-10-31 22:12:01,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:12:01" (3/3) ... [2024-10-31 22:12:01,444 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_power.i [2024-10-31 22:12:01,464 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:12:01,464 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:12:01,464 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:12:01,549 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:12:01,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2024-10-31 22:12:01,661 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-10-31 22:12:01,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:01,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-10-31 22:12:01,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2024-10-31 22:12:01,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 36 transitions, 81 flow [2024-10-31 22:12:01,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:12:01,697 INFO L333 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, 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;@74cdf69f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:12:01,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-31 22:12:01,704 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:12:01,704 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-10-31 22:12:01,704 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:12:01,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:01,705 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:12:01,706 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:01,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 588902002, now seen corresponding path program 1 times [2024-10-31 22:12:01,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:01,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918222729] [2024-10-31 22:12:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:02,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918222729] [2024-10-31 22:12:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918222729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:02,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:02,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:12:02,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426093888] [2024-10-31 22:12:02,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:02,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:12:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:12:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:12:02,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-10-31 22:12:02,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:02,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:02,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-10-31 22:12:02,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:03,209 INFO L124 PetriNetUnfolderBase]: 719/1241 cut-off events. [2024-10-31 22:12:03,210 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-31 22:12:03,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 1241 events. 719/1241 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7781 event pairs, 116 based on Foata normal form. 48/1263 useless extension candidates. Maximal degree in co-relation 2353. Up to 874 conditions per place. [2024-10-31 22:12:03,229 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 29 selfloop transitions, 2 changer transitions 2/47 dead transitions. [2024-10-31 22:12:03,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 172 flow [2024-10-31 22:12:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:12:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:12:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-31 22:12:03,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7435897435897436 [2024-10-31 22:12:03,248 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 81 flow. Second operand 3 states and 87 transitions. [2024-10-31 22:12:03,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 172 flow [2024-10-31 22:12:03,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:12:03,258 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 76 flow [2024-10-31 22:12:03,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2024-10-31 22:12:03,270 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2024-10-31 22:12:03,270 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 76 flow [2024-10-31 22:12:03,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:03,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:03,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:03,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:12:03,272 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:03,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:03,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1716186806, now seen corresponding path program 1 times [2024-10-31 22:12:03,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384111852] [2024-10-31 22:12:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384111852] [2024-10-31 22:12:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384111852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:03,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:12:03,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292816892] [2024-10-31 22:12:03,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:03,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:12:03,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:12:03,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:12:03,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-10-31 22:12:03,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:03,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:03,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-10-31 22:12:03,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:04,758 INFO L124 PetriNetUnfolderBase]: 1497/2516 cut-off events. [2024-10-31 22:12:04,758 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-10-31 22:12:04,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4964 conditions, 2516 events. 1497/2516 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15333 event pairs, 186 based on Foata normal form. 100/2522 useless extension candidates. Maximal degree in co-relation 4954. Up to 1316 conditions per place. [2024-10-31 22:12:04,780 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 42 selfloop transitions, 5 changer transitions 1/58 dead transitions. [2024-10-31 22:12:04,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 230 flow [2024-10-31 22:12:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:12:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:12:04,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-31 22:12:04,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-10-31 22:12:04,782 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 76 flow. Second operand 4 states and 102 transitions. [2024-10-31 22:12:04,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 230 flow [2024-10-31 22:12:04,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 58 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:12:04,785 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 106 flow [2024-10-31 22:12:04,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-10-31 22:12:04,786 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-10-31 22:12:04,786 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 106 flow [2024-10-31 22:12:04,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:04,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:04,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:04,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:12:04,787 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:04,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:04,788 INFO L85 PathProgramCache]: Analyzing trace with hash -364092021, now seen corresponding path program 1 times [2024-10-31 22:12:04,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:04,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889120833] [2024-10-31 22:12:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:04,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:05,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889120833] [2024-10-31 22:12:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889120833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:05,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:05,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:12:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491218165] [2024-10-31 22:12:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:05,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:12:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:12:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:12:05,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-10-31 22:12:05,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:05,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:05,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-10-31 22:12:05,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:05,747 INFO L124 PetriNetUnfolderBase]: 960/1625 cut-off events. [2024-10-31 22:12:05,747 INFO L125 PetriNetUnfolderBase]: For 415/415 co-relation queries the response was YES. [2024-10-31 22:12:05,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3724 conditions, 1625 events. 960/1625 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8686 event pairs, 98 based on Foata normal form. 82/1655 useless extension candidates. Maximal degree in co-relation 3712. Up to 581 conditions per place. [2024-10-31 22:12:05,758 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 53 selfloop transitions, 8 changer transitions 1/72 dead transitions. [2024-10-31 22:12:05,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 323 flow [2024-10-31 22:12:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:12:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-31 22:12:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-10-31 22:12:05,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6615384615384615 [2024-10-31 22:12:05,762 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 106 flow. Second operand 5 states and 129 transitions. [2024-10-31 22:12:05,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 323 flow [2024-10-31 22:12:05,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 313 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:12:05,765 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 146 flow [2024-10-31 22:12:05,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-10-31 22:12:05,769 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-10-31 22:12:05,769 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 146 flow [2024-10-31 22:12:05,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:05,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:05,769 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:05,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:12:05,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:05,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1214236992, now seen corresponding path program 1 times [2024-10-31 22:12:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330848798] [2024-10-31 22:12:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:06,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:06,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330848798] [2024-10-31 22:12:06,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330848798] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:06,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:06,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:12:06,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692261239] [2024-10-31 22:12:06,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:06,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:06,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:06,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:06,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:06,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2024-10-31 22:12:06,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:06,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:06,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2024-10-31 22:12:06,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:07,006 INFO L124 PetriNetUnfolderBase]: 567/934 cut-off events. [2024-10-31 22:12:07,006 INFO L125 PetriNetUnfolderBase]: For 744/744 co-relation queries the response was YES. [2024-10-31 22:12:07,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 934 events. 567/934 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4160 event pairs, 81 based on Foata normal form. 40/954 useless extension candidates. Maximal degree in co-relation 2428. Up to 308 conditions per place. [2024-10-31 22:12:07,015 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 46 selfloop transitions, 11 changer transitions 1/68 dead transitions. [2024-10-31 22:12:07,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 330 flow [2024-10-31 22:12:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-10-31 22:12:07,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2024-10-31 22:12:07,020 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 146 flow. Second operand 6 states and 138 transitions. [2024-10-31 22:12:07,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 330 flow [2024-10-31 22:12:07,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 305 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:07,031 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 160 flow [2024-10-31 22:12:07,031 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-10-31 22:12:07,033 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 7 predicate places. [2024-10-31 22:12:07,033 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 160 flow [2024-10-31 22:12:07,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:07,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:07,034 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:07,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:12:07,034 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:07,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1953638527, now seen corresponding path program 1 times [2024-10-31 22:12:07,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:07,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451744944] [2024-10-31 22:12:07,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:07,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:07,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:07,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451744944] [2024-10-31 22:12:07,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451744944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:07,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:07,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:12:07,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448009080] [2024-10-31 22:12:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:07,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:12:07,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:12:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:12:07,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2024-10-31 22:12:07,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:07,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:07,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2024-10-31 22:12:07,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:08,575 INFO L124 PetriNetUnfolderBase]: 668/1319 cut-off events. [2024-10-31 22:12:08,575 INFO L125 PetriNetUnfolderBase]: For 600/614 co-relation queries the response was YES. [2024-10-31 22:12:08,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 1319 events. 668/1319 cut-off events. For 600/614 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7547 event pairs, 84 based on Foata normal form. 8/1299 useless extension candidates. Maximal degree in co-relation 2986. Up to 572 conditions per place. [2024-10-31 22:12:08,586 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 27 selfloop transitions, 1 changer transitions 24/69 dead transitions. [2024-10-31 22:12:08,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 69 transitions, 336 flow [2024-10-31 22:12:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:12:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:12:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-10-31 22:12:08,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2024-10-31 22:12:08,589 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 160 flow. Second operand 6 states and 137 transitions. [2024-10-31 22:12:08,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 69 transitions, 336 flow [2024-10-31 22:12:08,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 272 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-10-31 22:12:08,601 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 115 flow [2024-10-31 22:12:08,601 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-10-31 22:12:08,602 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-10-31 22:12:08,602 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 115 flow [2024-10-31 22:12:08,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:08,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:08,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:08,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:12:08,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:08,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash 596366147, now seen corresponding path program 2 times [2024-10-31 22:12:08,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:08,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668552604] [2024-10-31 22:12:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:15,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:15,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668552604] [2024-10-31 22:12:15,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668552604] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:15,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:12:15,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081587285] [2024-10-31 22:12:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:15,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:12:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:15,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:12:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:12:15,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-10-31 22:12:15,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 115 flow. Second operand has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:15,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:15,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-10-31 22:12:15,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:16,585 INFO L124 PetriNetUnfolderBase]: 648/1320 cut-off events. [2024-10-31 22:12:16,585 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-31 22:12:16,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 1320 events. 648/1320 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7706 event pairs, 150 based on Foata normal form. 8/1252 useless extension candidates. Maximal degree in co-relation 2634. Up to 495 conditions per place. [2024-10-31 22:12:16,594 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 43 selfloop transitions, 15 changer transitions 22/99 dead transitions. [2024-10-31 22:12:16,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 99 transitions, 415 flow [2024-10-31 22:12:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:12:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:12:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2024-10-31 22:12:16,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5990675990675991 [2024-10-31 22:12:16,596 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 115 flow. Second operand 11 states and 257 transitions. [2024-10-31 22:12:16,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 99 transitions, 415 flow [2024-10-31 22:12:16,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 99 transitions, 398 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-31 22:12:16,600 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 191 flow [2024-10-31 22:12:16,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=191, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-10-31 22:12:16,602 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 16 predicate places. [2024-10-31 22:12:16,603 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 191 flow [2024-10-31 22:12:16,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:16,603 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:16,603 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:16,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:12:16,604 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:16,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash -652651435, now seen corresponding path program 3 times [2024-10-31 22:12:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:16,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608866343] [2024-10-31 22:12:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:16,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:12:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:12:21,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:12:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608866343] [2024-10-31 22:12:21,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608866343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:12:21,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:12:21,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:12:21,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999862733] [2024-10-31 22:12:21,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:12:21,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:12:21,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:12:21,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:12:21,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:12:21,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-10-31 22:12:21,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 191 flow. Second operand has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:21,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:12:21,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-10-31 22:12:21,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:12:23,114 INFO L124 PetriNetUnfolderBase]: 872/1778 cut-off events. [2024-10-31 22:12:23,118 INFO L125 PetriNetUnfolderBase]: For 246/298 co-relation queries the response was YES. [2024-10-31 22:12:23,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3881 conditions, 1778 events. 872/1778 cut-off events. For 246/298 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11380 event pairs, 344 based on Foata normal form. 16/1693 useless extension candidates. Maximal degree in co-relation 3864. Up to 494 conditions per place. [2024-10-31 22:12:23,147 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 46 selfloop transitions, 5 changer transitions 44/114 dead transitions. [2024-10-31 22:12:23,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 114 transitions, 553 flow [2024-10-31 22:12:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:12:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:12:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 279 transitions. [2024-10-31 22:12:23,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-10-31 22:12:23,150 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 191 flow. Second operand 12 states and 279 transitions. [2024-10-31 22:12:23,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 114 transitions, 553 flow [2024-10-31 22:12:23,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 530 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-10-31 22:12:23,158 INFO L231 Difference]: Finished difference. Result has 76 places, 48 transitions, 200 flow [2024-10-31 22:12:23,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=200, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2024-10-31 22:12:23,160 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-10-31 22:12:23,161 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 200 flow [2024-10-31 22:12:23,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.545454545454547) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:12:23,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:12:23,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:12:23,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:12:23,163 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:12:23,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:12:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1945814003, now seen corresponding path program 4 times [2024-10-31 22:12:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:12:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586034499] [2024-10-31 22:12:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:12:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:12:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat