./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX --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 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:06:41,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:06:41,457 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:06:41,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:06:41,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:06:41,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:06:41,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:06:41,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:06:41,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:06:41,490 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:06:41,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:06:41,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:06:41,492 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:06:41,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:06:41,493 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:06:41,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:06:41,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:06:41,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:06:41,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:06:41,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:06:41,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:06:41,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:06:41,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:06:41,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:06:41,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:06:41,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:06:41,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:06:41,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:06:41,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:06:41,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:06:41,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:06:41,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:06:41,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:06:41,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:06:41,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:06:41,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:06:41,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:06:41,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:06:41,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:06:41,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:06:41,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:06:41,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:06:41,506 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_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cd6aaa75855c8ee03a174376352b142cf57dd56532b968b1b6c916585172927 [2024-11-08 18:06:41,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:06:41,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:06:41,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:06:41,840 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:06:41,841 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:06:41,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i Unable to find full path for "g++" [2024-11-08 18:06:44,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:06:44,374 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:06:44,374 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i [2024-11-08 18:06:44,394 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/data/4cbe7a08c/b951565eabe84490b1c2252518f8739c/FLAG9142c7626 [2024-11-08 18:06:44,708 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/data/4cbe7a08c/b951565eabe84490b1c2252518f8739c [2024-11-08 18:06:44,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:06:44,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:06:44,714 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:06:44,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:06:44,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:06:44,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:06:44" (1/1) ... [2024-11-08 18:06:44,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed41399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:44, skipping insertion in model container [2024-11-08 18:06:44,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:06:44" (1/1) ... [2024-11-08 18:06:44,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:06:45,354 WARN L250 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_ed1723ce-0d3c-44ed-a7de-4950b1437af8/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2024-11-08 18:06:45,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:06:45,427 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:06:45,479 WARN L250 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_ed1723ce-0d3c-44ed-a7de-4950b1437af8/sv-benchmarks/c/goblint-regression/28-race_reach_12-ptr_racefree.i[30176,30189] [2024-11-08 18:06:45,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:06:45,540 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:06:45,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45 WrapperNode [2024-11-08 18:06:45,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:06:45,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:06:45,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:06:45,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:06:45,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,597 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 132 [2024-11-08 18:06:45,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:06:45,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:06:45,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:06:45,598 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:06:45,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,634 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 5, 2, 6]. 30 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 5, 0, 1]. The 3 writes are split as follows [0, 0, 0, 1, 2]. [2024-11-08 18:06:45,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:06:45,679 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:06:45,680 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:06:45,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:06:45,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (1/1) ... [2024-11-08 18:06:45,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:06:45,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:45,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:06:45,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:06:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:06:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:06:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 18:06:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 18:06:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 18:06:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:06:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:06:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 18:06:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 18:06:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 18:06:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 18:06:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:06:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:06:45,758 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 18:06:45,759 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 18:06:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:06:45,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:06:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:06:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 18:06:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 18:06:45,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 18:06:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 18:06:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:06:45,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:06:45,763 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 18:06:45,930 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:06:45,932 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:06:46,241 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 18:06:46,242 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:06:46,844 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:06:46,844 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-08 18:06:46,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:06:46 BoogieIcfgContainer [2024-11-08 18:06:46,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:06:46,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:06:46,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:06:46,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:06:46,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:06:44" (1/3) ... [2024-11-08 18:06:46,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ce201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:06:46, skipping insertion in model container [2024-11-08 18:06:46,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:45" (2/3) ... [2024-11-08 18:06:46,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ce201e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:06:46, skipping insertion in model container [2024-11-08 18:06:46,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:06:46" (3/3) ... [2024-11-08 18:06:46,854 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2024-11-08 18:06:46,876 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:06:46,876 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:06:46,877 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 18:06:46,936 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-08 18:06:46,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 55 transitions, 117 flow [2024-11-08 18:06:47,053 INFO L124 PetriNetUnfolderBase]: 17/81 cut-off events. [2024-11-08 18:06:47,055 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:06:47,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 17/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 245 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 50. Up to 4 conditions per place. [2024-11-08 18:06:47,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 55 transitions, 117 flow [2024-11-08 18:06:47,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 53 transitions, 110 flow [2024-11-08 18:06:47,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:06:47,089 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;@7993253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:06:47,090 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:06:47,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:06:47,123 INFO L124 PetriNetUnfolderBase]: 3/29 cut-off events. [2024-11-08 18:06:47,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 18:06:47,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:06:47,124 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-08 18:06:47,125 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:06:47,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:47,131 INFO L85 PathProgramCache]: Analyzing trace with hash -263843450, now seen corresponding path program 1 times [2024-11-08 18:06:47,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:47,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379728092] [2024-11-08 18:06:47,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:06:47,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:06:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:06:47,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:06:47,512 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:06:47,513 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 18:06:47,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 18:06:47,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:06:47,516 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-08 18:06:47,522 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:06:47,522 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 18:06:47,565 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-08 18:06:47,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 80 transitions, 176 flow [2024-11-08 18:06:47,630 INFO L124 PetriNetUnfolderBase]: 31/142 cut-off events. [2024-11-08 18:06:47,631 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 18:06:47,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 142 events. 31/142 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 520 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2024-11-08 18:06:47,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 80 transitions, 176 flow [2024-11-08 18:06:47,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 80 transitions, 176 flow [2024-11-08 18:06:47,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:06:47,643 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;@7993253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:06:47,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:06:47,656 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:06:47,656 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-08 18:06:47,657 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:06:47,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:06:47,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:47,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:06:47,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:47,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1692719062, now seen corresponding path program 1 times [2024-11-08 18:06:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:47,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460995694] [2024-11-08 18:06:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:06:47,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460995694] [2024-11-08 18:06:47,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460995694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:06:47,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:06:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291460052] [2024-11-08 18:06:47,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:47,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:06:47,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:06:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:06:48,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 80 [2024-11-08 18:06:48,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 80 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-08 18:06:48,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:06:48,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 80 [2024-11-08 18:06:48,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:06:49,272 INFO L124 PetriNetUnfolderBase]: 3386/6641 cut-off events. [2024-11-08 18:06:49,273 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-08 18:06:49,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 6641 events. 3386/6641 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 47838 event pairs, 2806 based on Foata normal form. 1528/7788 useless extension candidates. Maximal degree in co-relation 9003. Up to 5191 conditions per place. [2024-11-08 18:06:49,312 INFO L140 encePairwiseOnDemand]: 61/80 looper letters, 41 selfloop transitions, 2 changer transitions 14/77 dead transitions. [2024-11-08 18:06:49,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 77 transitions, 274 flow [2024-11-08 18:06:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:06:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:06:49,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-08 18:06:49,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-08 18:06:49,330 INFO L175 Difference]: Start difference. First operand has 66 places, 80 transitions, 176 flow. Second operand 3 states and 150 transitions. [2024-11-08 18:06:49,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 77 transitions, 274 flow [2024-11-08 18:06:49,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:06:49,340 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 126 flow [2024-11-08 18:06:49,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2024-11-08 18:06:49,349 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2024-11-08 18:06:49,349 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 126 flow [2024-11-08 18:06:49,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-08 18:06:49,349 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:06:49,350 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-08 18:06:49,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:06:49,350 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:06:49,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:49,351 INFO L85 PathProgramCache]: Analyzing trace with hash -818483730, now seen corresponding path program 1 times [2024-11-08 18:06:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045868390] [2024-11-08 18:06:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:49,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:06:49,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:06:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:06:49,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:06:49,476 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:06:49,477 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 18:06:49,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 18:06:49,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 18:06:49,480 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 18:06:49,481 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:06:49,481 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 18:06:49,522 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-08 18:06:49,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 105 transitions, 237 flow [2024-11-08 18:06:49,555 INFO L124 PetriNetUnfolderBase]: 50/220 cut-off events. [2024-11-08 18:06:49,556 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-08 18:06:49,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 220 events. 50/220 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 863 event pairs, 1 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 153. Up to 16 conditions per place. [2024-11-08 18:06:49,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 105 transitions, 237 flow [2024-11-08 18:06:49,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 105 transitions, 237 flow [2024-11-08 18:06:49,564 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:06:49,567 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;@7993253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:06:49,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:06:49,575 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:06:49,576 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-08 18:06:49,576 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:06:49,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:06:49,576 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:49,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:06:49,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1914450963, now seen corresponding path program 1 times [2024-11-08 18:06:49,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:49,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749477723] [2024-11-08 18:06:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:49,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:06:49,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:49,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749477723] [2024-11-08 18:06:49,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749477723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:06:49,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:06:49,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:06:49,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292533371] [2024-11-08 18:06:49,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:06:49,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:06:49,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:49,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:06:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:06:49,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 105 [2024-11-08 18:06:49,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 18:06:49,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:06:49,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 105 [2024-11-08 18:06:49,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:07:02,132 INFO L124 PetriNetUnfolderBase]: 57148/93981 cut-off events. [2024-11-08 18:07:02,133 INFO L125 PetriNetUnfolderBase]: For 1470/1470 co-relation queries the response was YES. [2024-11-08 18:07:02,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173023 conditions, 93981 events. 57148/93981 cut-off events. For 1470/1470 co-relation queries the response was YES. Maximal size of possible extension queue 2171. Compared 829594 event pairs, 35621 based on Foata normal form. 24692/114661 useless extension candidates. Maximal degree in co-relation 11972. Up to 78074 conditions per place. [2024-11-08 18:07:02,895 INFO L140 encePairwiseOnDemand]: 80/105 looper letters, 52 selfloop transitions, 2 changer transitions 15/96 dead transitions. [2024-11-08 18:07:02,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 96 transitions, 347 flow [2024-11-08 18:07:02,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:07:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 18:07:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-11-08 18:07:02,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-08 18:07:02,902 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 237 flow. Second operand 3 states and 189 transitions. [2024-11-08 18:07:02,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 96 transitions, 347 flow [2024-11-08 18:07:02,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 347 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 18:07:02,915 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 170 flow [2024-11-08 18:07:02,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-11-08 18:07:02,917 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 3 predicate places. [2024-11-08 18:07:02,919 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 170 flow [2024-11-08 18:07:02,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-08 18:07:02,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:07:02,920 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:02,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 18:07:02,920 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:07:02,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1716577661, now seen corresponding path program 1 times [2024-11-08 18:07:02,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483317668] [2024-11-08 18:07:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:02,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:03,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:03,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483317668] [2024-11-08 18:07:03,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483317668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529145410] [2024-11-08 18:07:03,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:03,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:03,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:03,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:03,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:07:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:03,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 18:07:03,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:03,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:03,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529145410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:03,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:03,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-08 18:07:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226402676] [2024-11-08 18:07:03,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:03,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:07:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:07:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:07:03,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 105 [2024-11-08 18:07:03,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 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) [2024-11-08 18:07:03,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:07:03,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 105 [2024-11-08 18:07:03,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 18:07:06,347 INFO L124 PetriNetUnfolderBase]: 14110/22455 cut-off events. [2024-11-08 18:07:06,347 INFO L125 PetriNetUnfolderBase]: For 6241/6241 co-relation queries the response was YES. [2024-11-08 18:07:06,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44421 conditions, 22455 events. 14110/22455 cut-off events. For 6241/6241 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 165086 event pairs, 1248 based on Foata normal form. 2926/24643 useless extension candidates. Maximal degree in co-relation 36084. Up to 14883 conditions per place. [2024-11-08 18:07:06,509 INFO L140 encePairwiseOnDemand]: 101/105 looper letters, 101 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-08 18:07:06,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 492 flow [2024-11-08 18:07:06,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:07:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 18:07:06,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 297 transitions. [2024-11-08 18:07:06,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-08 18:07:06,514 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 170 flow. Second operand 6 states and 297 transitions. [2024-11-08 18:07:06,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 492 flow [2024-11-08 18:07:06,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 127 transitions, 488 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-08 18:07:06,521 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 154 flow [2024-11-08 18:07:06,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=154, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-11-08 18:07:06,522 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2024-11-08 18:07:06,523 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 154 flow [2024-11-08 18:07:06,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 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) [2024-11-08 18:07:06,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:07:06,524 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-08 18:07:06,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:07:06,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed1723ce-0d3c-44ed-a7de-4950b1437af8/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:06,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:07:06,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash 967599237, now seen corresponding path program 1 times [2024-11-08 18:07:06,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:06,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777148445] [2024-11-08 18:07:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:07:06,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 18:07:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 18:07:06,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 18:07:06,875 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 18:07:06,876 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-11-08 18:07:06,876 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-08 18:07:06,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 18:07:06,877 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-08 18:07:06,878 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 18:07:06,878 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-08 18:07:06,941 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-08 18:07:06,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 130 transitions, 300 flow [2024-11-08 18:07:07,017 INFO L124 PetriNetUnfolderBase]: 81/334 cut-off events. [2024-11-08 18:07:07,018 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-08 18:07:07,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 334 events. 81/334 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1383 event pairs, 6 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 244. Up to 32 conditions per place. [2024-11-08 18:07:07,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 130 transitions, 300 flow [2024-11-08 18:07:07,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 130 transitions, 300 flow [2024-11-08 18:07:07,029 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:07:07,031 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;@7993253, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:07:07,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 18:07:07,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 18:07:07,046 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2024-11-08 18:07:07,046 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-08 18:07:07,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 18:07:07,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:07,047 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-08 18:07:07,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1062892437, now seen corresponding path program 1 times [2024-11-08 18:07:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:07,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363497320] [2024-11-08 18:07:07,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:07,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363497320] [2024-11-08 18:07:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363497320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:07:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:07:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 18:07:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178201721] [2024-11-08 18:07:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:07:07,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:07:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:07:07,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:07:07,176 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 130 [2024-11-08 18:07:07,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 130 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-11-08 18:07:07,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 18:07:07,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 130 [2024-11-08 18:07:07,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand