./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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/weaver/parallel-ticket-4.wvr.c -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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:45:36,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:45:36,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:45:36,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:45:36,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:45:36,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:45:36,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:45:36,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:45:36,815 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:45:36,816 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:45:36,816 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:45:36,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:45:36,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:45:36,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:45:36,819 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:45:36,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:45:36,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:45:36,821 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:45:36,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:45:36,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:45:36,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:45:36,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:45:36,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:45:36,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:45:36,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:45:36,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:45:36,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:45:36,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:45:36,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:45:36,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:45:36,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:45:36,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:45:36,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:45:36,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:45:36,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:45:36,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:45:36,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:45:36,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:45:36,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:45:36,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:45:36,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:45:36,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:45:36,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:45:36,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:45:37,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:45:37,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:45:37,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:45:37,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:45:37,139 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:45:37,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2024-02-19 14:45:38,212 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:45:38,382 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:45:38,382 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2024-02-19 14:45:38,388 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927335162/65b2c3458a484d4a8540082e28ac54e5/FLAGd83b86d4a [2024-02-19 14:45:38,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927335162/65b2c3458a484d4a8540082e28ac54e5 [2024-02-19 14:45:38,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:45:38,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:45:38,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:45:38,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:45:38,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:45:38,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282e3fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38, skipping insertion in model container [2024-02-19 14:45:38,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,452 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:45:38,615 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2024-02-19 14:45:38,623 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:45:38,633 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:45:38,669 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2024-02-19 14:45:38,670 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:45:38,683 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:45:38,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38 WrapperNode [2024-02-19 14:45:38,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:45:38,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:45:38,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:45:38,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:45:38,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,737 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2024-02-19 14:45:38,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:45:38,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:45:38,739 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:45:38,739 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:45:38,747 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,761 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,781 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-19 14:45:38,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:45:38,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:45:38,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:45:38,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:45:38,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (1/1) ... [2024-02-19 14:45:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:45:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:45:38,829 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) [2024-02-19 14:45:38,862 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 [2024-02-19 14:45:38,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:45:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:45:38,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:45:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:45:38,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:45:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:45:38,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:45:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-02-19 14:45:38,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-02-19 14:45:38,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:45:38,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:45:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:45:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:45:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 14:45:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 14:45:38,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:45:38,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:45:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:45:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:45:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:45:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:45:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:45:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:45:38,893 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:45:38,986 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:45:38,987 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:45:39,214 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:45:39,214 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:45:39,379 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:45:39,379 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-19 14:45:39,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:45:39 BoogieIcfgContainer [2024-02-19 14:45:39,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:45:39,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:45:39,381 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:45:39,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:45:39,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:45:38" (1/3) ... [2024-02-19 14:45:39,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6855438e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:45:39, skipping insertion in model container [2024-02-19 14:45:39,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:45:38" (2/3) ... [2024-02-19 14:45:39,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6855438e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:45:39, skipping insertion in model container [2024-02-19 14:45:39,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:45:39" (3/3) ... [2024-02-19 14:45:39,385 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2024-02-19 14:45:39,399 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:45:39,400 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:45:39,400 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:45:39,448 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-02-19 14:45:39,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 44 transitions, 116 flow [2024-02-19 14:45:39,511 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-02-19 14:45:39,511 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:45:39,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 40 events. 0/40 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-02-19 14:45:39,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 44 transitions, 116 flow [2024-02-19 14:45:39,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 102 flow [2024-02-19 14:45:39,538 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:45:39,547 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;@6172401e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:45:39,547 INFO L370 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-02-19 14:45:39,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:45:39,571 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2024-02-19 14:45:39,571 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-19 14:45:39,571 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:39,572 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:45:39,572 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:45:39,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:39,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1247062642, now seen corresponding path program 1 times [2024-02-19 14:45:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:39,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315582676] [2024-02-19 14:45:39,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:39,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:40,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:40,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315582676] [2024-02-19 14:45:40,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315582676] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:45:40,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:45:40,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:45:40,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753083090] [2024-02-19 14:45:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:45:40,508 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:45:40,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:45:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:45:40,561 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 44 [2024-02-19 14:45:40,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-02-19 14:45:40,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:40,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 44 [2024-02-19 14:45:40,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:42,139 INFO L124 PetriNetUnfolderBase]: 16907/23268 cut-off events. [2024-02-19 14:45:42,140 INFO L125 PetriNetUnfolderBase]: For 1273/1273 co-relation queries the response was YES. [2024-02-19 14:45:42,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47876 conditions, 23268 events. 16907/23268 cut-off events. For 1273/1273 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 121053 event pairs, 4310 based on Foata normal form. 1/23269 useless extension candidates. Maximal degree in co-relation 40894. Up to 9585 conditions per place. [2024-02-19 14:45:42,263 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 88 selfloop transitions, 9 changer transitions 30/128 dead transitions. [2024-02-19 14:45:42,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 573 flow [2024-02-19 14:45:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:45:42,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:45:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-02-19 14:45:42,276 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2024-02-19 14:45:42,281 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-02-19 14:45:42,281 INFO L507 AbstractCegarLoop]: Abstraction has has 57 places, 128 transitions, 573 flow [2024-02-19 14:45:42,281 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2024-02-19 14:45:42,282 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:42,282 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:45:42,282 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:45:42,282 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:45:42,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash -616577032, now seen corresponding path program 2 times [2024-02-19 14:45:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:42,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322605939] [2024-02-19 14:45:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:42,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322605939] [2024-02-19 14:45:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322605939] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:45:42,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:45:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:45:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943766128] [2024-02-19 14:45:42,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:45:42,439 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:45:42,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:45:42,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:45:42,442 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-02-19 14:45:42,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 128 transitions, 573 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:45:42,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:42,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-02-19 14:45:42,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:44,504 INFO L124 PetriNetUnfolderBase]: 23985/33190 cut-off events. [2024-02-19 14:45:44,504 INFO L125 PetriNetUnfolderBase]: For 9016/9016 co-relation queries the response was YES. [2024-02-19 14:45:44,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94780 conditions, 33190 events. 23985/33190 cut-off events. For 9016/9016 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 188536 event pairs, 3240 based on Foata normal form. 92/33282 useless extension candidates. Maximal degree in co-relation 93483. Up to 13983 conditions per place. [2024-02-19 14:45:44,685 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 215 selfloop transitions, 82 changer transitions 123/436 dead transitions. [2024-02-19 14:45:44,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 436 transitions, 2772 flow [2024-02-19 14:45:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:45:44,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:45:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-02-19 14:45:44,690 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6461038961038961 [2024-02-19 14:45:44,691 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-02-19 14:45:44,691 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 436 transitions, 2772 flow [2024-02-19 14:45:44,692 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:45:44,692 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:44,692 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:45:44,693 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:45:44,695 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:45:44,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1570986574, now seen corresponding path program 3 times [2024-02-19 14:45:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713639070] [2024-02-19 14:45:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:44,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:44,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:44,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713639070] [2024-02-19 14:45:44,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713639070] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:45:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:45:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:45:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941791978] [2024-02-19 14:45:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:45:44,941 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:45:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:44,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:45:44,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-19 14:45:44,942 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-02-19 14:45:44,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 436 transitions, 2772 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-02-19 14:45:44,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:44,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-02-19 14:45:44,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:48,040 INFO L124 PetriNetUnfolderBase]: 35334/49393 cut-off events. [2024-02-19 14:45:48,040 INFO L125 PetriNetUnfolderBase]: For 37553/37553 co-relation queries the response was YES. [2024-02-19 14:45:48,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182032 conditions, 49393 events. 35334/49393 cut-off events. For 37553/37553 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 302488 event pairs, 4542 based on Foata normal form. 450/49843 useless extension candidates. Maximal degree in co-relation 180103. Up to 20979 conditions per place. [2024-02-19 14:45:48,310 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 378 selfloop transitions, 113 changer transitions 237/744 dead transitions. [2024-02-19 14:45:48,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 744 transitions, 6191 flow [2024-02-19 14:45:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:45:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:45:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-02-19 14:45:48,313 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-02-19 14:45:48,314 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-02-19 14:45:48,314 INFO L507 AbstractCegarLoop]: Abstraction has has 68 places, 744 transitions, 6191 flow [2024-02-19 14:45:48,315 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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) [2024-02-19 14:45:48,315 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:48,315 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:45:48,315 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:45:48,315 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:45:48,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:48,316 INFO L85 PathProgramCache]: Analyzing trace with hash 887308820, now seen corresponding path program 4 times [2024-02-19 14:45:48,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:48,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72298307] [2024-02-19 14:45:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:48,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:48,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:48,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72298307] [2024-02-19 14:45:48,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72298307] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:45:48,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:45:48,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:45:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344982454] [2024-02-19 14:45:48,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:45:48,415 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:45:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:45:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:45:48,418 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-02-19 14:45:48,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 744 transitions, 6191 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2024-02-19 14:45:48,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:48,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-02-19 14:45:48,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:53,804 INFO L124 PetriNetUnfolderBase]: 49784/70281 cut-off events. [2024-02-19 14:45:53,805 INFO L125 PetriNetUnfolderBase]: For 116536/116536 co-relation queries the response was YES. [2024-02-19 14:45:53,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318653 conditions, 70281 events. 49784/70281 cut-off events. For 116536/116536 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 462843 event pairs, 6372 based on Foata normal form. 880/71161 useless extension candidates. Maximal degree in co-relation 315372. Up to 29509 conditions per place. [2024-02-19 14:45:54,212 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 686 selfloop transitions, 131 changer transitions 392/1225 dead transitions. [2024-02-19 14:45:54,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 1225 transitions, 12641 flow [2024-02-19 14:45:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:45:54,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:45:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-02-19 14:45:54,214 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-02-19 14:45:54,215 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-02-19 14:45:54,215 INFO L507 AbstractCegarLoop]: Abstraction has has 72 places, 1225 transitions, 12641 flow [2024-02-19 14:45:54,215 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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) [2024-02-19 14:45:54,215 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:54,215 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:45:54,216 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-19 14:45:54,216 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:45:54,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 820190924, now seen corresponding path program 5 times [2024-02-19 14:45:54,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165754989] [2024-02-19 14:45:54,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:54,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:54,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:45:54,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:54,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165754989] [2024-02-19 14:45:54,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165754989] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:45:54,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:45:54,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:45:54,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406037162] [2024-02-19 14:45:54,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:45:54,317 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:45:54,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:54,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:45:54,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:45:54,319 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-02-19 14:45:54,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 1225 transitions, 12641 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 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) [2024-02-19 14:45:54,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:54,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-02-19 14:45:54,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:01,432 INFO L124 PetriNetUnfolderBase]: 50043/70928 cut-off events. [2024-02-19 14:46:01,432 INFO L125 PetriNetUnfolderBase]: For 199709/199709 co-relation queries the response was YES. [2024-02-19 14:46:01,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380294 conditions, 70928 events. 50043/70928 cut-off events. For 199709/199709 co-relation queries the response was YES. Maximal size of possible extension queue 2161. Compared 472232 event pairs, 6776 based on Foata normal form. 734/71662 useless extension candidates. Maximal degree in co-relation 376442. Up to 29959 conditions per place. [2024-02-19 14:46:01,828 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 669 selfloop transitions, 240 changer transitions 432/1357 dead transitions. [2024-02-19 14:46:01,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 1357 transitions, 16650 flow [2024-02-19 14:46:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 14:46:01,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 14:46:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-02-19 14:46:01,829 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6237373737373737 [2024-02-19 14:46:01,830 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-02-19 14:46:01,830 INFO L507 AbstractCegarLoop]: Abstraction has has 80 places, 1357 transitions, 16650 flow [2024-02-19 14:46:01,830 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 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) [2024-02-19 14:46:01,830 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:01,831 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:46:01,831 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:46:01,831 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:46:01,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash 961975914, now seen corresponding path program 6 times [2024-02-19 14:46:01,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:01,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003987185] [2024-02-19 14:46:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:01,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:01,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:01,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003987185] [2024-02-19 14:46:01,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003987185] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:01,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-19 14:46:01,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655809743] [2024-02-19 14:46:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:01,907 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:46:01,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:01,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:46:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:46:01,908 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-02-19 14:46:01,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 1357 transitions, 16650 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:01,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:01,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-02-19 14:46:01,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:09,780 INFO L124 PetriNetUnfolderBase]: 51281/73318 cut-off events. [2024-02-19 14:46:09,781 INFO L125 PetriNetUnfolderBase]: For 319850/319850 co-relation queries the response was YES. [2024-02-19 14:46:09,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454459 conditions, 73318 events. 51281/73318 cut-off events. For 319850/319850 co-relation queries the response was YES. Maximal size of possible extension queue 2295. Compared 501225 event pairs, 7302 based on Foata normal form. 1770/75088 useless extension candidates. Maximal degree in co-relation 450036. Up to 31047 conditions per place. [2024-02-19 14:46:10,310 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 817 selfloop transitions, 244 changer transitions 555/1632 dead transitions. [2024-02-19 14:46:10,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 1632 transitions, 23267 flow [2024-02-19 14:46:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:46:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:46:10,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-02-19 14:46:10,311 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7130681818181818 [2024-02-19 14:46:10,312 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-02-19 14:46:10,312 INFO L507 AbstractCegarLoop]: Abstraction has has 87 places, 1632 transitions, 23267 flow [2024-02-19 14:46:10,312 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:10,313 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:10,313 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:46:10,313 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-19 14:46:10,313 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:46:10,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:10,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1664945164, now seen corresponding path program 7 times [2024-02-19 14:46:10,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:10,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123702467] [2024-02-19 14:46:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:10,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:46:10,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123702467] [2024-02-19 14:46:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123702467] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:10,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:10,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-19 14:46:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468993247] [2024-02-19 14:46:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:10,465 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-19 14:46:10,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-19 14:46:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-19 14:46:10,467 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-02-19 14:46:10,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 1632 transitions, 23267 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:10,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:10,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-02-19 14:46:10,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:19,401 INFO L124 PetriNetUnfolderBase]: 49833/72166 cut-off events. [2024-02-19 14:46:19,402 INFO L125 PetriNetUnfolderBase]: For 436612/436612 co-relation queries the response was YES. [2024-02-19 14:46:19,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509584 conditions, 72166 events. 49833/72166 cut-off events. For 436612/436612 co-relation queries the response was YES. Maximal size of possible extension queue 2339. Compared 506936 event pairs, 7630 based on Foata normal form. 2032/74198 useless extension candidates. Maximal degree in co-relation 504590. Up to 30665 conditions per place. [2024-02-19 14:46:20,174 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 874 selfloop transitions, 311 changer transitions 747/1948 dead transitions. [2024-02-19 14:46:20,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 1948 transitions, 31619 flow [2024-02-19 14:46:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 14:46:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 14:46:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 324 transitions. [2024-02-19 14:46:20,176 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-02-19 14:46:20,176 INFO L308 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-02-19 14:46:20,176 INFO L507 AbstractCegarLoop]: Abstraction has has 98 places, 1948 transitions, 31619 flow [2024-02-19 14:46:20,177 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:46:20,177 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:20,177 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:46:20,177 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-19 14:46:20,177 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-02-19 14:46:20,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash 763188876, now seen corresponding path program 8 times [2024-02-19 14:46:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:20,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694545927] [2024-02-19 14:46:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat