./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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_71-funloop_racing.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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:18:17,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:18:17,694 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:18:17,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:18:17,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:18:17,727 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:18:17,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:18:17,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:18:17,728 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:18:17,731 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:18:17,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:18:17,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:18:17,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:18:17,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:18:17,734 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:18:17,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:18:17,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:18:17,734 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:18:17,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:18:17,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:18:17,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:18:17,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:18:17,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:18:17,737 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:18:17,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:18:17,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:18:17,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:18:17,737 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:18:17,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:18:17,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:18:17,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:18:17,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:18:17,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:18:17,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:18:17,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:18:17,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:18:17,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:18:17,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:18:17,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:18:17,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:18:17,741 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:18:17,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:18:17,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:18:17,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-01-27 16:18:17,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:18:17,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:18:17,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:18:17,966 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:18:17,966 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:18:17,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2024-01-27 16:18:19,045 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:18:19,304 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:18:19,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_71-funloop_racing.i [2024-01-27 16:18:19,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28500cc2a/f118d71738d94b9da5bb1c3f4b9ad91d/FLAG6c4520813 [2024-01-27 16:18:19,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28500cc2a/f118d71738d94b9da5bb1c3f4b9ad91d [2024-01-27 16:18:19,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:18:19,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:18:19,340 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:18:19,341 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:18:19,345 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:18:19,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:19,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b7e361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19, skipping insertion in model container [2024-01-27 16:18:19,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:19,398 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:18:19,729 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_71-funloop_racing.i[41323,41336] [2024-01-27 16:18:19,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:18:19,792 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:18:19,823 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_71-funloop_racing.i[41323,41336] [2024-01-27 16:18:19,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:18:19,884 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:18:19,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19 WrapperNode [2024-01-27 16:18:19,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:18:19,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:18:19,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:18:19,886 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:18:19,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:19,920 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:19,953 INFO L138 Inliner]: procedures = 272, calls = 47, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 279 [2024-01-27 16:18:19,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:18:19,961 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:18:19,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:18:19,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:18:19,974 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:19,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:19,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,018 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 5, 2, 16]. 64 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 8 writes are split as follows [0, 0, 1, 7]. [2024-01-27 16:18:20,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,046 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:18:20,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:18:20,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:18:20,063 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:18:20,064 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (1/1) ... [2024-01-27 16:18:20,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:18:20,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:20,097 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) [2024-01-27 16:18:20,098 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 [2024-01-27 16:18:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:18:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:18:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 16:18:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 16:18:20,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 16:18:20,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 16:18:20,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 16:18:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:18:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:18:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:18:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:18:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 16:18:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:18:20,138 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-01-27 16:18:20,138 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-01-27 16:18:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:18:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:18:20,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:18:20,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:18:20,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:18:20,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:18:20,142 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:18:20,310 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:18:20,312 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:18:20,612 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:18:20,613 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:18:20,782 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:18:20,782 INFO L320 CfgBuilder]: Removed 35 assume(true) statements. [2024-01-27 16:18:20,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:18:20 BoogieIcfgContainer [2024-01-27 16:18:20,783 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:18:20,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:18:20,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:18:20,787 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:18:20,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:18:19" (1/3) ... [2024-01-27 16:18:20,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa9e2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:18:20, skipping insertion in model container [2024-01-27 16:18:20,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:18:19" (2/3) ... [2024-01-27 16:18:20,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa9e2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:18:20, skipping insertion in model container [2024-01-27 16:18:20,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:18:20" (3/3) ... [2024-01-27 16:18:20,789 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-01-27 16:18:20,795 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:18:20,805 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:18:20,806 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-01-27 16:18:20,806 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:18:20,855 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-01-27 16:18:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 134 transitions, 275 flow [2024-01-27 16:18:20,921 INFO L124 PetriNetUnfolderBase]: 65/217 cut-off events. [2024-01-27 16:18:20,921 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-27 16:18:20,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 217 events. 65/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1025 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2024-01-27 16:18:20,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 134 transitions, 275 flow [2024-01-27 16:18:20,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 132 transitions, 268 flow [2024-01-27 16:18:20,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:18:20,958 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ec7f26e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:18:20,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 16:18:20,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:18:20,969 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-01-27 16:18:20,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:18:20,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:20,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-01-27 16:18:20,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:18:20,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1523522021, now seen corresponding path program 1 times [2024-01-27 16:18:20,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:20,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041492137] [2024-01-27 16:18:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:20,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:21,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:21,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041492137] [2024-01-27 16:18:21,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041492137] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:18:21,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:18:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:18:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599337887] [2024-01-27 16:18:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:18:21,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:18:21,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:21,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:18:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:18:21,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 134 [2024-01-27 16:18:21,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 132 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-01-27 16:18:21,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:21,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 134 [2024-01-27 16:18:21,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:21,711 INFO L124 PetriNetUnfolderBase]: 772/2151 cut-off events. [2024-01-27 16:18:21,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:18:21,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 2151 events. 772/2151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16035 event pairs, 630 based on Foata normal form. 528/2421 useless extension candidates. Maximal degree in co-relation 3478. Up to 1435 conditions per place. [2024-01-27 16:18:21,726 INFO L140 encePairwiseOnDemand]: 98/134 looper letters, 58 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-01-27 16:18:21,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 324 flow [2024-01-27 16:18:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:18:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:18:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2024-01-27 16:18:21,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323383084577115 [2024-01-27 16:18:21,765 INFO L175 Difference]: Start difference. First operand has 96 places, 132 transitions, 268 flow. Second operand 3 states and 214 transitions. [2024-01-27 16:18:21,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 324 flow [2024-01-27 16:18:21,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 16:18:21,771 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 214 flow [2024-01-27 16:18:21,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2024-01-27 16:18:21,776 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2024-01-27 16:18:21,776 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 214 flow [2024-01-27 16:18:21,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2024-01-27 16:18:21,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:21,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-01-27 16:18:21,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:18:21,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:18:21,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1344353360, now seen corresponding path program 1 times [2024-01-27 16:18:21,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418710225] [2024-01-27 16:18:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:21,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:21,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:21,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418710225] [2024-01-27 16:18:21,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418710225] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:18:21,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142025944] [2024-01-27 16:18:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:21,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:21,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:21,870 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:18:21,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 16:18:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:21,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:18:21,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:18:21,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:21,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:18:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142025944] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:18:21,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 16:18:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-27 16:18:21,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930453195] [2024-01-27 16:18:21,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 16:18:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:18:21,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:18:21,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:18:21,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 134 [2024-01-27 16:18:21,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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) [2024-01-27 16:18:21,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:21,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 134 [2024-01-27 16:18:21,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:22,321 INFO L124 PetriNetUnfolderBase]: 772/2154 cut-off events. [2024-01-27 16:18:22,322 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 16:18:22,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3607 conditions, 2154 events. 772/2154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16063 event pairs, 630 based on Foata normal form. 0/1896 useless extension candidates. Maximal degree in co-relation 3595. Up to 1435 conditions per place. [2024-01-27 16:18:22,329 INFO L140 encePairwiseOnDemand]: 131/134 looper letters, 58 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-01-27 16:18:22,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 103 transitions, 352 flow [2024-01-27 16:18:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:18:22,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:18:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 306 transitions. [2024-01-27 16:18:22,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805970149253731 [2024-01-27 16:18:22,332 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 214 flow. Second operand 6 states and 306 transitions. [2024-01-27 16:18:22,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 103 transitions, 352 flow [2024-01-27 16:18:22,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 16:18:22,335 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 246 flow [2024-01-27 16:18:22,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2024-01-27 16:18:22,336 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 10 predicate places. [2024-01-27 16:18:22,336 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 246 flow [2024-01-27 16:18:22,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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) [2024-01-27 16:18:22,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:22,337 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-01-27 16:18:22,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 16:18:22,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:22,549 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:18:22,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 99437403, now seen corresponding path program 2 times [2024-01-27 16:18:22,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:22,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272596991] [2024-01-27 16:18:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:22,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:22,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:22,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272596991] [2024-01-27 16:18:22,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272596991] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:18:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226937027] [2024-01-27 16:18:22,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:18:22,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:22,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:22,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:18:22,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 16:18:22,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:18:22,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:18:22,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 16:18:22,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:18:22,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:22,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:18:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 16:18:22,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226937027] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:18:22,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 16:18:22,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-27 16:18:22,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893286624] [2024-01-27 16:18:22,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 16:18:22,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 16:18:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 16:18:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-01-27 16:18:22,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 134 [2024-01-27 16:18:22,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 246 flow. Second operand has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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) [2024-01-27 16:18:22,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:22,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 134 [2024-01-27 16:18:22,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:23,061 INFO L124 PetriNetUnfolderBase]: 772/2160 cut-off events. [2024-01-27 16:18:23,061 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-01-27 16:18:23,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3644 conditions, 2160 events. 772/2160 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16045 event pairs, 630 based on Foata normal form. 6/1909 useless extension candidates. Maximal degree in co-relation 3586. Up to 1435 conditions per place. [2024-01-27 16:18:23,071 INFO L140 encePairwiseOnDemand]: 131/134 looper letters, 58 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2024-01-27 16:18:23,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 420 flow [2024-01-27 16:18:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 16:18:23,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 16:18:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 555 transitions. [2024-01-27 16:18:23,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3451492537313433 [2024-01-27 16:18:23,075 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 246 flow. Second operand 12 states and 555 transitions. [2024-01-27 16:18:23,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 420 flow [2024-01-27 16:18:23,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 109 transitions, 406 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 16:18:23,080 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 316 flow [2024-01-27 16:18:23,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-01-27 16:18:23,081 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 26 predicate places. [2024-01-27 16:18:23,081 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 316 flow [2024-01-27 16:18:23,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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) [2024-01-27 16:18:23,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:23,082 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-01-27 16:18:23,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-27 16:18:23,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-01-27 16:18:23,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 16:18:23,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:23,296 INFO L85 PathProgramCache]: Analyzing trace with hash 421410619, now seen corresponding path program 3 times [2024-01-27 16:18:23,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:23,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098733553] [2024-01-27 16:18:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:23,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:18:23,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 16:18:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:18:23,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 16:18:23,359 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 16:18:23,360 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-01-27 16:18:23,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-01-27 16:18:23,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-01-27 16:18:23,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-01-27 16:18:23,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-01-27 16:18:23,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 16:18:23,362 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-27 16:18:23,364 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 16:18:23,364 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-27 16:18:23,387 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 16:18:23,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 179 transitions, 374 flow [2024-01-27 16:18:23,409 INFO L124 PetriNetUnfolderBase]: 105/352 cut-off events. [2024-01-27 16:18:23,409 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 16:18:23,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 352 events. 105/352 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1889 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 219. Up to 12 conditions per place. [2024-01-27 16:18:23,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 179 transitions, 374 flow [2024-01-27 16:18:23,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 179 transitions, 374 flow [2024-01-27 16:18:23,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:18:23,415 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ec7f26e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:18:23,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-01-27 16:18:23,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:18:23,428 INFO L124 PetriNetUnfolderBase]: 14/79 cut-off events. [2024-01-27 16:18:23,428 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:18:23,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:23,428 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-01-27 16:18:23,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 16:18:23,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:23,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1367826724, now seen corresponding path program 1 times [2024-01-27 16:18:23,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:23,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232086460] [2024-01-27 16:18:23,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:23,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:18:23,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:23,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232086460] [2024-01-27 16:18:23,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232086460] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:18:23,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:18:23,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:18:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469589792] [2024-01-27 16:18:23,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:18:23,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:18:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:23,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:18:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:18:23,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-01-27 16:18:23,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 179 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-01-27 16:18:23,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:23,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-01-27 16:18:23,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:27,105 INFO L124 PetriNetUnfolderBase]: 29293/57078 cut-off events. [2024-01-27 16:18:27,105 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-01-27 16:18:27,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99046 conditions, 57078 events. 29293/57078 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 578702 event pairs, 25003 based on Foata normal form. 15018/65101 useless extension candidates. Maximal degree in co-relation 80566. Up to 41865 conditions per place. [2024-01-27 16:18:27,461 INFO L140 encePairwiseOnDemand]: 132/179 looper letters, 81 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-01-27 16:18:27,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 136 transitions, 454 flow [2024-01-27 16:18:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 16:18:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 16:18:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2024-01-27 16:18:27,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344506517690876 [2024-01-27 16:18:27,464 INFO L175 Difference]: Start difference. First operand has 130 places, 179 transitions, 374 flow. Second operand 3 states and 287 transitions. [2024-01-27 16:18:27,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 136 transitions, 454 flow [2024-01-27 16:18:27,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 136 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 16:18:27,467 INFO L231 Difference]: Finished difference. Result has 133 places, 136 transitions, 298 flow [2024-01-27 16:18:27,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=133, PETRI_TRANSITIONS=136} [2024-01-27 16:18:27,468 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 3 predicate places. [2024-01-27 16:18:27,468 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 136 transitions, 298 flow [2024-01-27 16:18:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-01-27 16:18:27,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:27,469 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-01-27 16:18:27,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 16:18:27,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 16:18:27,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash 486450554, now seen corresponding path program 1 times [2024-01-27 16:18:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:27,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567667171] [2024-01-27 16:18:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:27,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:18:27,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:27,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567667171] [2024-01-27 16:18:27,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567667171] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:18:27,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958609996] [2024-01-27 16:18:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:27,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:18:27,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 16:18:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:27,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 16:18:27,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:18:27,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:18:27,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:18:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:18:27,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958609996] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:18:27,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 16:18:27,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-01-27 16:18:27,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154932048] [2024-01-27 16:18:27,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 16:18:27,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 16:18:27,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 16:18:27,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-27 16:18:27,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-01-27 16:18:27,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 136 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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) [2024-01-27 16:18:27,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:27,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-01-27 16:18:27,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:30,844 INFO L124 PetriNetUnfolderBase]: 29293/57081 cut-off events. [2024-01-27 16:18:30,844 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-01-27 16:18:30,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99062 conditions, 57081 events. 29293/57081 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 578703 event pairs, 25003 based on Foata normal form. 0/50086 useless extension candidates. Maximal degree in co-relation 99049. Up to 41865 conditions per place. [2024-01-27 16:18:31,138 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 81 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-01-27 16:18:31,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 139 transitions, 482 flow [2024-01-27 16:18:31,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 16:18:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 16:18:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2024-01-27 16:18:31,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3789571694599628 [2024-01-27 16:18:31,140 INFO L175 Difference]: Start difference. First operand has 133 places, 136 transitions, 298 flow. Second operand 6 states and 407 transitions. [2024-01-27 16:18:31,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 139 transitions, 482 flow [2024-01-27 16:18:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 478 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 16:18:31,145 INFO L231 Difference]: Finished difference. Result has 140 places, 139 transitions, 330 flow [2024-01-27 16:18:31,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=140, PETRI_TRANSITIONS=139} [2024-01-27 16:18:31,148 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 10 predicate places. [2024-01-27 16:18:31,148 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 139 transitions, 330 flow [2024-01-27 16:18:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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) [2024-01-27 16:18:31,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:31,149 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-01-27 16:18:31,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 16:18:31,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:31,365 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 16:18:31,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash 588535388, now seen corresponding path program 2 times [2024-01-27 16:18:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270152080] [2024-01-27 16:18:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:31,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:18:31,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270152080] [2024-01-27 16:18:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270152080] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 16:18:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310505640] [2024-01-27 16:18:31,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 16:18:31,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:31,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:18:31,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 16:18:31,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 16:18:31,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 16:18:31,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 16:18:31,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-27 16:18:31,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 16:18:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:18:31,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 16:18:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-01-27 16:18:31,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310505640] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 16:18:31,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 16:18:31,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-27 16:18:31,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812495862] [2024-01-27 16:18:31,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 16:18:31,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-27 16:18:31,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-27 16:18:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-01-27 16:18:31,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-01-27 16:18:31,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 139 transitions, 330 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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) [2024-01-27 16:18:31,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:31,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-01-27 16:18:31,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 16:18:35,026 INFO L124 PetriNetUnfolderBase]: 29293/57087 cut-off events. [2024-01-27 16:18:35,027 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-01-27 16:18:35,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99099 conditions, 57087 events. 29293/57087 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 578938 event pairs, 25003 based on Foata normal form. 6/50099 useless extension candidates. Maximal degree in co-relation 99040. Up to 41865 conditions per place. [2024-01-27 16:18:35,321 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 81 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2024-01-27 16:18:35,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 145 transitions, 550 flow [2024-01-27 16:18:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 16:18:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 16:18:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 734 transitions. [2024-01-27 16:18:35,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34171322160148976 [2024-01-27 16:18:35,324 INFO L175 Difference]: Start difference. First operand has 140 places, 139 transitions, 330 flow. Second operand 12 states and 734 transitions. [2024-01-27 16:18:35,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 145 transitions, 550 flow [2024-01-27 16:18:35,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 536 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-27 16:18:35,339 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 400 flow [2024-01-27 16:18:35,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=400, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-01-27 16:18:35,340 INFO L281 CegarLoopForPetriNet]: 130 programPoint places, 26 predicate places. [2024-01-27 16:18:35,340 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 400 flow [2024-01-27 16:18:35,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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) [2024-01-27 16:18:35,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:35,341 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-01-27 16:18:35,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 16:18:35,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 16:18:35,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-01-27 16:18:35,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1751555684, now seen corresponding path program 3 times [2024-01-27 16:18:35,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:35,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879314822] [2024-01-27 16:18:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:35,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:18:35,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 16:18:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:18:35,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 16:18:35,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 16:18:35,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-01-27 16:18:35,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-01-27 16:18:35,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-01-27 16:18:35,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-01-27 16:18:35,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-01-27 16:18:35,601 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-01-27 16:18:35,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 16:18:35,601 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2024-01-27 16:18:35,602 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 16:18:35,602 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-27 16:18:35,634 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 16:18:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 224 transitions, 475 flow [2024-01-27 16:18:35,660 INFO L124 PetriNetUnfolderBase]: 148/498 cut-off events. [2024-01-27 16:18:35,660 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-01-27 16:18:35,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 498 events. 148/498 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2867 event pairs, 1 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 361. Up to 16 conditions per place. [2024-01-27 16:18:35,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 224 transitions, 475 flow [2024-01-27 16:18:35,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 224 transitions, 475 flow [2024-01-27 16:18:35,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:18:35,668 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1ec7f26e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:18:35,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-27 16:18:35,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:18:35,672 INFO L124 PetriNetUnfolderBase]: 16/96 cut-off events. [2024-01-27 16:18:35,672 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-27 16:18:35,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:18:35,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:18:35,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-27 16:18:35,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:18:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1981694445, now seen corresponding path program 1 times [2024-01-27 16:18:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:18:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181275297] [2024-01-27 16:18:35,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:18:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:18:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 16:18:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 16:18:35,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 16:18:35,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181275297] [2024-01-27 16:18:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181275297] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 16:18:35,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 16:18:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 16:18:35,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845291280] [2024-01-27 16:18:35,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 16:18:35,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 16:18:35,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 16:18:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 16:18:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 16:18:35,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 224 [2024-01-27 16:18:35,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 224 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2024-01-27 16:18:35,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 16:18:35,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 224 [2024-01-27 16:18:35,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand