./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 11:36:52,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:36:52,537 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:36:52,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:36:52,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:36:52,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:36:52,583 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:36:52,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:36:52,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:36:52,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:36:52,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:36:52,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:36:52,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:36:52,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:36:52,589 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:36:52,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:36:52,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:36:52,590 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:36:52,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:36:52,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:36:52,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:36:52,591 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:36:52,591 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:36:52,591 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:36:52,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:36:52,592 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:36:52,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:36:52,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:36:52,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:36:52,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:36:52,594 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:36:52,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:36:52,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:36:52,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:36:52,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:36:52,595 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:36:52,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:36:52,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:36:52,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:36:52,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:36:52,596 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:36:52,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:36:52,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:36:52,596 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:36:52,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:36:52,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:36:52,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:36:52,834 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:36:52,834 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:36:52,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-02-20 11:36:53,970 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:36:54,205 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:36:54,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2024-02-20 11:36:54,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91c556d8f/3201df5ebfe44708bf049a47da6beff2/FLAGcf2884236 [2024-02-20 11:36:54,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91c556d8f/3201df5ebfe44708bf049a47da6beff2 [2024-02-20 11:36:54,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:36:54,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:36:54,239 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:36:54,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:36:54,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:36:54,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7637ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54, skipping insertion in model container [2024-02-20 11:36:54,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:36:54,630 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2024-02-20 11:36:54,658 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:36:54,680 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:36:54,717 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i[41323,41336] [2024-02-20 11:36:54,726 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:36:54,799 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:36:54,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54 WrapperNode [2024-02-20 11:36:54,800 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:36:54,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:36:54,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:36:54,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:36:54,807 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,842 INFO L138 Inliner]: procedures = 274, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2024-02-20 11:36:54,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:36:54,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:36:54,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:36:54,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:36:54,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,879 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-02-20 11:36:54,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,889 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:36:54,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:36:54,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:36:54,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:36:54,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (1/1) ... [2024-02-20 11:36:54,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:36:54,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:36:54,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-20 11:36:54,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-20 11:36:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:36:55,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:36:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-20 11:36:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:36:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:36:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:36:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:36:55,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 11:36:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:36:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:36:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:36:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:36:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 11:36:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-20 11:36:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:36:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-20 11:36:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-20 11:36:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:36:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:36:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:36:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:36:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 11:36:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:36:55,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:36:55,023 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:36:55,156 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:36:55,158 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:36:55,382 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:36:55,383 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:36:55,590 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:36:55,590 INFO L320 CfgBuilder]: Removed 10 assume(true) statements. [2024-02-20 11:36:55,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:36:55 BoogieIcfgContainer [2024-02-20 11:36:55,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:36:55,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:36:55,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:36:55,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:36:55,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:36:54" (1/3) ... [2024-02-20 11:36:55,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52efc1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:36:55, skipping insertion in model container [2024-02-20 11:36:55,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:36:54" (2/3) ... [2024-02-20 11:36:55,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52efc1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:36:55, skipping insertion in model container [2024-02-20 11:36:55,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:36:55" (3/3) ... [2024-02-20 11:36:55,600 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2024-02-20 11:36:55,614 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:36:55,629 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:36:55,629 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:36:55,659 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-20 11:36:55,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 57 transitions, 121 flow [2024-02-20 11:36:55,734 INFO L124 PetriNetUnfolderBase]: 13/81 cut-off events. [2024-02-20 11:36:55,735 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-20 11:36:55,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 81 events. 13/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 244 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 52. Up to 4 conditions per place. [2024-02-20 11:36:55,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 57 transitions, 121 flow [2024-02-20 11:36:55,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 55 transitions, 114 flow [2024-02-20 11:36:55,754 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:36:55,760 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6e254e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:36:55,760 INFO L370 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-02-20 11:36:55,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:36:55,769 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-02-20 11:36:55,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-20 11:36:55,769 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:36:55,770 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-20 11:36:55,770 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:36:55,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:36:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1431319436, now seen corresponding path program 1 times [2024-02-20 11:36:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:36:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541841162] [2024-02-20 11:36:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:36:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:36:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:36:55,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:36:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:36:55,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:36:55,976 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:36:55,977 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-02-20 11:36:55,978 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-02-20 11:36:55,979 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:36:55,979 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-20 11:36:55,981 WARN L345 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:36:55,982 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-20 11:36:56,007 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 11:36:56,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 86 transitions, 188 flow [2024-02-20 11:36:56,043 INFO L124 PetriNetUnfolderBase]: 24/141 cut-off events. [2024-02-20 11:36:56,044 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-20 11:36:56,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 141 events. 24/141 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 548 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 85. Up to 6 conditions per place. [2024-02-20 11:36:56,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 86 transitions, 188 flow [2024-02-20 11:36:56,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 86 transitions, 188 flow [2024-02-20 11:36:56,050 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:36:56,051 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6e254e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:36:56,051 INFO L370 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-02-20 11:36:56,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:36:56,062 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-02-20 11:36:56,062 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 11:36:56,063 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:36:56,063 INFO L234 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-20 11:36:56,063 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:36:56,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:36:56,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1512345740, now seen corresponding path program 1 times [2024-02-20 11:36:56,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:36:56,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274678178] [2024-02-20 11:36:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:36:56,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:36:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:36:56,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:36:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:36:56,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:36:56,128 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:36:56,129 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-02-20 11:36:56,129 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-02-20 11:36:56,129 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:36:56,129 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-20 11:36:56,130 WARN L345 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:36:56,130 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-20 11:36:56,160 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 11:36:56,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 115 transitions, 257 flow [2024-02-20 11:36:56,198 INFO L124 PetriNetUnfolderBase]: 38/212 cut-off events. [2024-02-20 11:36:56,199 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-02-20 11:36:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 212 events. 38/212 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 949 event pairs, 1 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 152. Up to 12 conditions per place. [2024-02-20 11:36:56,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 115 transitions, 257 flow [2024-02-20 11:36:56,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 115 transitions, 257 flow [2024-02-20 11:36:56,205 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:36:56,206 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6e254e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:36:56,206 INFO L370 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-02-20 11:36:56,212 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:36:56,212 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2024-02-20 11:36:56,213 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-20 11:36:56,213 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:36:56,213 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-02-20 11:36:56,213 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:36:56,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:36:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash 984298931, now seen corresponding path program 1 times [2024-02-20 11:36:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:36:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090688790] [2024-02-20 11:36:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:36:56,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:36:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:36:56,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-20 11:36:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-20 11:36:56,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-20 11:36:56,269 INFO L372 BasicCegarLoop]: Counterexample is feasible [2024-02-20 11:36:56,270 INFO L818 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2024-02-20 11:36:56,270 INFO L818 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-02-20 11:36:56,270 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 11:36:56,270 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2024-02-20 11:36:56,271 WARN L345 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-20 11:36:56,271 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-02-20 11:36:56,321 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-20 11:36:56,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 144 transitions, 328 flow [2024-02-20 11:36:56,362 INFO L124 PetriNetUnfolderBase]: 60/307 cut-off events. [2024-02-20 11:36:56,362 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-02-20 11:36:56,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 307 events. 60/307 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1453 event pairs, 6 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 236. Up to 32 conditions per place. [2024-02-20 11:36:56,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 144 transitions, 328 flow [2024-02-20 11:36:56,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 144 transitions, 328 flow [2024-02-20 11:36:56,368 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:36:56,369 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6e254e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:36:56,369 INFO L370 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-02-20 11:36:56,375 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:36:56,375 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2024-02-20 11:36:56,375 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-02-20 11:36:56,375 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:36:56,375 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:36:56,376 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 11:36:56,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:36:56,376 INFO L85 PathProgramCache]: Analyzing trace with hash -457392447, now seen corresponding path program 1 times [2024-02-20 11:36:56,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:36:56,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705078858] [2024-02-20 11:36:56,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:36:56,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:36:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:36:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:36:56,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:36:56,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705078858] [2024-02-20 11:36:56,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705078858] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:36:56,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:36:56,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 11:36:56,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18984056] [2024-02-20 11:36:56,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:36:56,449 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:36:56,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:36:56,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:36:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:36:56,482 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 144 [2024-02-20 11:36:56,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 144 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2024-02-20 11:36:56,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:36:56,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 144 [2024-02-20 11:36:56,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand