./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.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 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 12:15:47,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:15:47,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:15:47,903 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:15:47,904 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:15:47,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:15:47,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:15:47,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:15:47,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:15:47,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:15:47,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:15:47,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:15:47,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:15:47,934 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:15:47,934 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:15:47,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:15:47,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:15:47,934 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:15:47,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:15:47,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:15:47,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:15:47,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:15:47,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:15:47,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:15:47,937 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:15:47,937 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:15:47,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:15:47,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:15:47,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:15:47,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:15:47,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:15:47,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:15:47,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:15:47,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:15:47,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:15:47,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:15:47,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:15:47,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:15:47,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:15:47,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:15:47,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:15:47,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:15:47,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:15:47,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:15:48,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:15:48,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:15:48,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:15:48,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:15:48,190 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:15:48,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2024-02-20 12:15:49,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:15:49,417 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:15:49,418 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2024-02-20 12:15:49,427 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ced120c8/8630c670f564485f95aeb963360dae17/FLAGf14d8c5a9 [2024-02-20 12:15:49,439 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ced120c8/8630c670f564485f95aeb963360dae17 [2024-02-20 12:15:49,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:15:49,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:15:49,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:15:49,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:15:49,449 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:15:49,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e95b600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49, skipping insertion in model container [2024-02-20 12:15:49,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:15:49,626 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/popl20-more-array-sum2.wvr.c[2599,2612] [2024-02-20 12:15:49,640 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:15:49,649 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:15:49,680 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/popl20-more-array-sum2.wvr.c[2599,2612] [2024-02-20 12:15:49,687 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:15:49,699 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:15:49,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49 WrapperNode [2024-02-20 12:15:49,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:15:49,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:15:49,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:15:49,702 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:15:49,707 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,755 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 279 [2024-02-20 12:15:49,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:15:49,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:15:49,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:15:49,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:15:49,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,808 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 2, 8, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 2, 1]. [2024-02-20 12:15:49,809 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,832 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:15:49,842 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:15:49,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:15:49,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:15:49,844 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (1/1) ... [2024-02-20 12:15:49,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:15:49,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:15:49,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-20 12:15:49,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-20 12:15:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:15:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:15:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:15:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:15:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:15:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 12:15:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 12:15:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:15:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:15:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:15:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 12:15:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 12:15:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:15:49,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:15:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:15:49,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:15:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 12:15:49,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 12:15:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:15:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:15:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:15:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 12:15:49,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 12:15:49,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:15:49,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:15:49,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:15:49,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:15:49,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:15:49,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:15:49,932 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 12:15:50,082 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:15:50,084 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:15:50,482 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:15:50,482 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:15:50,775 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:15:50,775 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-02-20 12:15:50,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:15:50 BoogieIcfgContainer [2024-02-20 12:15:50,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:15:50,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:15:50,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:15:50,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:15:50,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:15:49" (1/3) ... [2024-02-20 12:15:50,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07a38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:15:50, skipping insertion in model container [2024-02-20 12:15:50,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:15:49" (2/3) ... [2024-02-20 12:15:50,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07a38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:15:50, skipping insertion in model container [2024-02-20 12:15:50,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:15:50" (3/3) ... [2024-02-20 12:15:50,785 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2024-02-20 12:15:50,799 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:15:50,800 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:15:50,800 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:15:50,865 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 12:15:50,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 37 transitions, 95 flow [2024-02-20 12:15:50,919 INFO L124 PetriNetUnfolderBase]: 5/34 cut-off events. [2024-02-20 12:15:50,919 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:15:50,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 5/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-02-20 12:15:50,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 37 transitions, 95 flow [2024-02-20 12:15:50,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 33 transitions, 84 flow [2024-02-20 12:15:50,937 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:15:50,943 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;@4b3db2e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:15:50,944 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 12:15:50,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:15:50,960 INFO L124 PetriNetUnfolderBase]: 5/32 cut-off events. [2024-02-20 12:15:50,960 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:15:50,961 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:15:50,961 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] [2024-02-20 12:15:50,962 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 1 more)] === [2024-02-20 12:15:50,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:15:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1856552843, now seen corresponding path program 1 times [2024-02-20 12:15:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:15:50,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634067173] [2024-02-20 12:15:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:15:50,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:15:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:15:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:15:51,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:15:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634067173] [2024-02-20 12:15:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634067173] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:15:51,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:15:51,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:15:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902412536] [2024-02-20 12:15:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:15:51,378 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:15:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:15:51,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:15:51,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:15:51,415 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-02-20 12:15:51,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:15:51,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:15:51,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-02-20 12:15:51,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:15:51,629 INFO L124 PetriNetUnfolderBase]: 552/854 cut-off events. [2024-02-20 12:15:51,629 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-02-20 12:15:51,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 854 events. 552/854 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3794 event pairs, 299 based on Foata normal form. 1/808 useless extension candidates. Maximal degree in co-relation 1362. Up to 753 conditions per place. [2024-02-20 12:15:51,635 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 24 selfloop transitions, 4 changer transitions 1/36 dead transitions. [2024-02-20 12:15:51,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 148 flow [2024-02-20 12:15:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:15:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:15:51,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-02-20 12:15:51,644 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-02-20 12:15:51,647 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-02-20 12:15:51,647 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 148 flow [2024-02-20 12:15:51,647 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:15:51,647 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:15:51,647 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] [2024-02-20 12:15:51,648 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:15:51,648 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 1 more)] === [2024-02-20 12:15:51,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:15:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1177453011, now seen corresponding path program 1 times [2024-02-20 12:15:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:15:51,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591857923] [2024-02-20 12:15:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:15:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:15:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:15:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:15:51,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:15:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591857923] [2024-02-20 12:15:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591857923] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:15:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964746350] [2024-02-20 12:15:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:15:51,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:15:51,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:15:51,877 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) [2024-02-20 12:15:51,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 12:15:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:15:51,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:15:51,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:15:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:15:52,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:15:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:15:52,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964746350] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:15:52,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:15:52,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-02-20 12:15:52,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665160108] [2024-02-20 12:15:52,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:15:52,092 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:15:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:15:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:15:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-20 12:15:52,101 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-02-20 12:15:52,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:15:52,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:15:52,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-02-20 12:15:52,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:15:52,283 INFO L124 PetriNetUnfolderBase]: 755/1149 cut-off events. [2024-02-20 12:15:52,284 INFO L125 PetriNetUnfolderBase]: For 228/325 co-relation queries the response was YES. [2024-02-20 12:15:52,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 1149 events. 755/1149 cut-off events. For 228/325 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5017 event pairs, 239 based on Foata normal form. 42/1159 useless extension candidates. Maximal degree in co-relation 2886. Up to 927 conditions per place. [2024-02-20 12:15:52,295 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 37 selfloop transitions, 5 changer transitions 1/48 dead transitions. [2024-02-20 12:15:52,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 286 flow [2024-02-20 12:15:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:15:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:15:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-02-20 12:15:52,299 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-02-20 12:15:52,300 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-02-20 12:15:52,300 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 286 flow [2024-02-20 12:15:52,300 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:15:52,300 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:15:52,305 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] [2024-02-20 12:15:52,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 12:15:52,517 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:15:52,519 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 1 more)] === [2024-02-20 12:15:52,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:15:52,519 INFO L85 PathProgramCache]: Analyzing trace with hash 851034790, now seen corresponding path program 1 times [2024-02-20 12:15:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:15:52,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299569798] [2024-02-20 12:15:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:15:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:15:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:15:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:15:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:15:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299569798] [2024-02-20 12:15:52,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299569798] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:15:52,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:15:52,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:15:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414643480] [2024-02-20 12:15:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:15:52,582 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:15:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:15:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:15:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:15:52,589 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-02-20 12:15:52,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:15:52,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:15:52,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-02-20 12:15:52,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:15:52,689 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([878] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork1_#res#1.offset_1| 0) (= |v_thread2Thread1of1ForFork1_#res#1.base_1| 0) (<= v_~M~0_43 |v_thread2Thread1of1ForFork1_~i~1#1_5|)) InVars {~M~0=v_~M~0_43, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_5|} OutVars{thread2Thread1of1ForFork1_#res#1.base=|v_thread2Thread1of1ForFork1_#res#1.base_1|, ~M~0=v_~M~0_43, thread2Thread1of1ForFork1_#res#1.offset=|v_thread2Thread1of1ForFork1_#res#1.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#res#1.base, thread2Thread1of1ForFork1_#res#1.offset, thread2Thread1of1ForFork1_~i~1#1][39], [4#L92-1true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, 35#L48-4true, 7#thread2EXITtrue, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), thread1Thread1of1ForFork0InUse, 36#L68-4true, 45#true]) [2024-02-20 12:15:52,689 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:15:52,689 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2024-02-20 12:15:52,689 INFO L297 olderBase$Statistics]: existing Event has 15 ancestors and is cut-off event [2024-02-20 12:15:52,689 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:15:52,700 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([878] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork1_#res#1.offset_1| 0) (= |v_thread2Thread1of1ForFork1_#res#1.base_1| 0) (<= v_~M~0_43 |v_thread2Thread1of1ForFork1_~i~1#1_5|)) InVars {~M~0=v_~M~0_43, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_5|} OutVars{thread2Thread1of1ForFork1_#res#1.base=|v_thread2Thread1of1ForFork1_#res#1.base_1|, ~M~0=v_~M~0_43, thread2Thread1of1ForFork1_#res#1.offset=|v_thread2Thread1of1ForFork1_#res#1.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#res#1.base, thread2Thread1of1ForFork1_#res#1.offset, thread2Thread1of1ForFork1_~i~1#1][39], [4#L92-1true, 25#L49true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, 7#thread2EXITtrue, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), thread1Thread1of1ForFork0InUse, 36#L68-4true, 45#true]) [2024-02-20 12:15:52,701 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-20 12:15:52,701 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:15:52,701 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-20 12:15:52,701 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-20 12:15:52,703 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([879] L59-->L61: Formula: (let ((.cse0 (* |v_thread2Thread1of1ForFork1_~i~1#1_7| 4))) (let ((.cse1 (select (select |v_#memory_int#3_87| v_~A~0.base_126) (+ v_~A~0.offset_126 .cse0))) (.cse5 (+ 2147483648 |v_thread2Thread1of1ForFork1_plus_#res#1_1|))) (let ((.cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| (+ 2147483647 v_~res2~0_122))) (.cse4 (<= v_~res2~0_122 .cse5)) (.cse3 (+ .cse1 v_~res2~0_122))) (and (= (+ (select (select |v_#memory_int#3_87| v_~B~0.base_108) (+ v_~B~0.offset_108 .cse0)) .cse1 v_~res2~0_122) |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= (ite (or (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| 2147483647) (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| v_~res2~0_122)) 1 0) 0)) (<= 0 (+ v_~res2~0_121 2147483648)) (= v_~res2~0_121 |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= 0 (ite (or .cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| .cse3)) 1 0))) .cse2 (<= v_~res2~0_121 2147483647) .cse4 (not (= (ite (or .cse4 (<= .cse3 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)) (not (= (ite (or (<= 0 .cse5) (<= v_~res2~0_122 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)))))) InVars {~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_122, #memory_int#3=|v_#memory_int#3_87|} OutVars{thread2Thread1of1ForFork1_plus_#in~a#1=|v_thread2Thread1of1ForFork1_plus_#in~a#1_1|, ~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, thread2Thread1of1ForFork1_#t~mem8#1=|v_thread2Thread1of1ForFork1_#t~mem8#1_1|, thread2Thread1of1ForFork1_plus_~a#1=|v_thread2Thread1of1ForFork1_plus_~a#1_1|, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, thread2Thread1of1ForFork1_plus_#in~b#1=|v_thread2Thread1of1ForFork1_plus_#in~b#1_1|, #memory_int#3=|v_#memory_int#3_87|, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread2Thread1of1ForFork1_#t~ret9#1=|v_thread2Thread1of1ForFork1_#t~ret9#1_1|, thread2Thread1of1ForFork1_#t~mem7#1=|v_thread2Thread1of1ForFork1_#t~mem7#1_1|, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_plus_#res#1=|v_thread2Thread1of1ForFork1_plus_#res#1_1|, thread2Thread1of1ForFork1_plus_~b#1=|v_thread2Thread1of1ForFork1_plus_~b#1_1|, thread2Thread1of1ForFork1_#t~ret10#1=|v_thread2Thread1of1ForFork1_#t~ret10#1_1|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_121} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_plus_#in~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork1_#t~ret9#1, thread2Thread1of1ForFork1_#t~mem8#1, thread2Thread1of1ForFork1_#t~mem7#1, thread2Thread1of1ForFork1_plus_#res#1, thread2Thread1of1ForFork1_plus_~b#1, thread2Thread1of1ForFork1_#t~ret10#1, thread2Thread1of1ForFork1_plus_~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork1_plus_#in~b#1, ~res2~0][35], [5#L61true, 4#L92-1true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, 35#L48-4true, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), thread1Thread1of1ForFork0InUse, 45#true, 36#L68-4true]) [2024-02-20 12:15:52,703 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-20 12:15:52,703 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-20 12:15:52,703 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:15:52,703 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-20 12:15:52,705 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([878] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork1_#res#1.offset_1| 0) (= |v_thread2Thread1of1ForFork1_#res#1.base_1| 0) (<= v_~M~0_43 |v_thread2Thread1of1ForFork1_~i~1#1_5|)) InVars {~M~0=v_~M~0_43, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_5|} OutVars{thread2Thread1of1ForFork1_#res#1.base=|v_thread2Thread1of1ForFork1_#res#1.base_1|, ~M~0=v_~M~0_43, thread2Thread1of1ForFork1_#res#1.offset=|v_thread2Thread1of1ForFork1_#res#1.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#res#1.base, thread2Thread1of1ForFork1_#res#1.offset, thread2Thread1of1ForFork1_~i~1#1][39], [4#L92-1true, 18#L69true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, 35#L48-4true, 7#thread2EXITtrue, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), thread1Thread1of1ForFork0InUse, 45#true]) [2024-02-20 12:15:52,705 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-20 12:15:52,705 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-20 12:15:52,705 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-02-20 12:15:52,705 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:15:52,715 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([879] L59-->L61: Formula: (let ((.cse0 (* |v_thread2Thread1of1ForFork1_~i~1#1_7| 4))) (let ((.cse1 (select (select |v_#memory_int#3_87| v_~A~0.base_126) (+ v_~A~0.offset_126 .cse0))) (.cse5 (+ 2147483648 |v_thread2Thread1of1ForFork1_plus_#res#1_1|))) (let ((.cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| (+ 2147483647 v_~res2~0_122))) (.cse4 (<= v_~res2~0_122 .cse5)) (.cse3 (+ .cse1 v_~res2~0_122))) (and (= (+ (select (select |v_#memory_int#3_87| v_~B~0.base_108) (+ v_~B~0.offset_108 .cse0)) .cse1 v_~res2~0_122) |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= (ite (or (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| 2147483647) (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| v_~res2~0_122)) 1 0) 0)) (<= 0 (+ v_~res2~0_121 2147483648)) (= v_~res2~0_121 |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= 0 (ite (or .cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| .cse3)) 1 0))) .cse2 (<= v_~res2~0_121 2147483647) .cse4 (not (= (ite (or .cse4 (<= .cse3 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)) (not (= (ite (or (<= 0 .cse5) (<= v_~res2~0_122 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)))))) InVars {~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_122, #memory_int#3=|v_#memory_int#3_87|} OutVars{thread2Thread1of1ForFork1_plus_#in~a#1=|v_thread2Thread1of1ForFork1_plus_#in~a#1_1|, ~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, thread2Thread1of1ForFork1_#t~mem8#1=|v_thread2Thread1of1ForFork1_#t~mem8#1_1|, thread2Thread1of1ForFork1_plus_~a#1=|v_thread2Thread1of1ForFork1_plus_~a#1_1|, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, thread2Thread1of1ForFork1_plus_#in~b#1=|v_thread2Thread1of1ForFork1_plus_#in~b#1_1|, #memory_int#3=|v_#memory_int#3_87|, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread2Thread1of1ForFork1_#t~ret9#1=|v_thread2Thread1of1ForFork1_#t~ret9#1_1|, thread2Thread1of1ForFork1_#t~mem7#1=|v_thread2Thread1of1ForFork1_#t~mem7#1_1|, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_plus_#res#1=|v_thread2Thread1of1ForFork1_plus_#res#1_1|, thread2Thread1of1ForFork1_plus_~b#1=|v_thread2Thread1of1ForFork1_plus_~b#1_1|, thread2Thread1of1ForFork1_#t~ret10#1=|v_thread2Thread1of1ForFork1_#t~ret10#1_1|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_121} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_plus_#in~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork1_#t~ret9#1, thread2Thread1of1ForFork1_#t~mem8#1, thread2Thread1of1ForFork1_#t~mem7#1, thread2Thread1of1ForFork1_plus_#res#1, thread2Thread1of1ForFork1_plus_~b#1, thread2Thread1of1ForFork1_#t~ret10#1, thread2Thread1of1ForFork1_plus_~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork1_plus_#in~b#1, ~res2~0][35], [5#L61true, 4#L92-1true, 25#L49true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), 45#true, thread1Thread1of1ForFork0InUse, 36#L68-4true]) [2024-02-20 12:15:52,715 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-02-20 12:15:52,715 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-20 12:15:52,715 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:15:52,715 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:15:52,716 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([879] L59-->L61: Formula: (let ((.cse0 (* |v_thread2Thread1of1ForFork1_~i~1#1_7| 4))) (let ((.cse1 (select (select |v_#memory_int#3_87| v_~A~0.base_126) (+ v_~A~0.offset_126 .cse0))) (.cse5 (+ 2147483648 |v_thread2Thread1of1ForFork1_plus_#res#1_1|))) (let ((.cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| (+ 2147483647 v_~res2~0_122))) (.cse4 (<= v_~res2~0_122 .cse5)) (.cse3 (+ .cse1 v_~res2~0_122))) (and (= (+ (select (select |v_#memory_int#3_87| v_~B~0.base_108) (+ v_~B~0.offset_108 .cse0)) .cse1 v_~res2~0_122) |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= (ite (or (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| 2147483647) (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| v_~res2~0_122)) 1 0) 0)) (<= 0 (+ v_~res2~0_121 2147483648)) (= v_~res2~0_121 |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= 0 (ite (or .cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| .cse3)) 1 0))) .cse2 (<= v_~res2~0_121 2147483647) .cse4 (not (= (ite (or .cse4 (<= .cse3 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)) (not (= (ite (or (<= 0 .cse5) (<= v_~res2~0_122 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)))))) InVars {~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_122, #memory_int#3=|v_#memory_int#3_87|} OutVars{thread2Thread1of1ForFork1_plus_#in~a#1=|v_thread2Thread1of1ForFork1_plus_#in~a#1_1|, ~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, thread2Thread1of1ForFork1_#t~mem8#1=|v_thread2Thread1of1ForFork1_#t~mem8#1_1|, thread2Thread1of1ForFork1_plus_~a#1=|v_thread2Thread1of1ForFork1_plus_~a#1_1|, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, thread2Thread1of1ForFork1_plus_#in~b#1=|v_thread2Thread1of1ForFork1_plus_#in~b#1_1|, #memory_int#3=|v_#memory_int#3_87|, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread2Thread1of1ForFork1_#t~ret9#1=|v_thread2Thread1of1ForFork1_#t~ret9#1_1|, thread2Thread1of1ForFork1_#t~mem7#1=|v_thread2Thread1of1ForFork1_#t~mem7#1_1|, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_plus_#res#1=|v_thread2Thread1of1ForFork1_plus_#res#1_1|, thread2Thread1of1ForFork1_plus_~b#1=|v_thread2Thread1of1ForFork1_plus_~b#1_1|, thread2Thread1of1ForFork1_#t~ret10#1=|v_thread2Thread1of1ForFork1_#t~ret10#1_1|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_121} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_plus_#in~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork1_#t~ret9#1, thread2Thread1of1ForFork1_#t~mem8#1, thread2Thread1of1ForFork1_#t~mem7#1, thread2Thread1of1ForFork1_plus_#res#1, thread2Thread1of1ForFork1_plus_~b#1, thread2Thread1of1ForFork1_#t~ret10#1, thread2Thread1of1ForFork1_plus_~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork1_plus_#in~b#1, ~res2~0][35], [5#L61true, 4#L92-1true, 25#L49true, 18#L69true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), 45#true, thread1Thread1of1ForFork0InUse]) [2024-02-20 12:15:52,716 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-02-20 12:15:52,716 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:15:52,717 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-02-20 12:15:52,717 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:15:52,717 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([878] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork1_#res#1.offset_1| 0) (= |v_thread2Thread1of1ForFork1_#res#1.base_1| 0) (<= v_~M~0_43 |v_thread2Thread1of1ForFork1_~i~1#1_5|)) InVars {~M~0=v_~M~0_43, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_5|} OutVars{thread2Thread1of1ForFork1_#res#1.base=|v_thread2Thread1of1ForFork1_#res#1.base_1|, ~M~0=v_~M~0_43, thread2Thread1of1ForFork1_#res#1.offset=|v_thread2Thread1of1ForFork1_#res#1.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#res#1.base, thread2Thread1of1ForFork1_#res#1.offset, thread2Thread1of1ForFork1_~i~1#1][39], [4#L92-1true, 25#L49true, 18#L69true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, 7#thread2EXITtrue, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), thread1Thread1of1ForFork0InUse, 45#true]) [2024-02-20 12:15:52,717 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-02-20 12:15:52,717 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:15:52,717 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:15:52,717 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-20 12:15:52,719 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([879] L59-->L61: Formula: (let ((.cse0 (* |v_thread2Thread1of1ForFork1_~i~1#1_7| 4))) (let ((.cse1 (select (select |v_#memory_int#3_87| v_~A~0.base_126) (+ v_~A~0.offset_126 .cse0))) (.cse5 (+ 2147483648 |v_thread2Thread1of1ForFork1_plus_#res#1_1|))) (let ((.cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| (+ 2147483647 v_~res2~0_122))) (.cse4 (<= v_~res2~0_122 .cse5)) (.cse3 (+ .cse1 v_~res2~0_122))) (and (= (+ (select (select |v_#memory_int#3_87| v_~B~0.base_108) (+ v_~B~0.offset_108 .cse0)) .cse1 v_~res2~0_122) |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= (ite (or (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| 2147483647) (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| v_~res2~0_122)) 1 0) 0)) (<= 0 (+ v_~res2~0_121 2147483648)) (= v_~res2~0_121 |v_thread2Thread1of1ForFork1_plus_#res#1_1|) (not (= 0 (ite (or .cse2 (<= |v_thread2Thread1of1ForFork1_plus_#res#1_1| .cse3)) 1 0))) .cse2 (<= v_~res2~0_121 2147483647) .cse4 (not (= (ite (or .cse4 (<= .cse3 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)) (not (= (ite (or (<= 0 .cse5) (<= v_~res2~0_122 |v_thread2Thread1of1ForFork1_plus_#res#1_1|)) 1 0) 0)))))) InVars {~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_122, #memory_int#3=|v_#memory_int#3_87|} OutVars{thread2Thread1of1ForFork1_plus_#in~a#1=|v_thread2Thread1of1ForFork1_plus_#in~a#1_1|, ~A~0.base=v_~A~0.base_126, ~B~0.base=v_~B~0.base_108, thread2Thread1of1ForFork1_#t~mem8#1=|v_thread2Thread1of1ForFork1_#t~mem8#1_1|, thread2Thread1of1ForFork1_plus_~a#1=|v_thread2Thread1of1ForFork1_plus_~a#1_1|, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1_1|, thread2Thread1of1ForFork1_~i~1#1=|v_thread2Thread1of1ForFork1_~i~1#1_7|, thread2Thread1of1ForFork1_plus_#in~b#1=|v_thread2Thread1of1ForFork1_plus_#in~b#1_1|, #memory_int#3=|v_#memory_int#3_87|, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1_1|, thread2Thread1of1ForFork1_#t~ret9#1=|v_thread2Thread1of1ForFork1_#t~ret9#1_1|, thread2Thread1of1ForFork1_#t~mem7#1=|v_thread2Thread1of1ForFork1_#t~mem7#1_1|, ~A~0.offset=v_~A~0.offset_126, thread2Thread1of1ForFork1_plus_#res#1=|v_thread2Thread1of1ForFork1_plus_#res#1_1|, thread2Thread1of1ForFork1_plus_~b#1=|v_thread2Thread1of1ForFork1_plus_~b#1_1|, thread2Thread1of1ForFork1_#t~ret10#1=|v_thread2Thread1of1ForFork1_#t~ret10#1_1|, ~B~0.offset=v_~B~0.offset_108, ~res2~0=v_~res2~0_121} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_plus_#in~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork1_#t~ret9#1, thread2Thread1of1ForFork1_#t~mem8#1, thread2Thread1of1ForFork1_#t~mem7#1, thread2Thread1of1ForFork1_plus_#res#1, thread2Thread1of1ForFork1_plus_~b#1, thread2Thread1of1ForFork1_#t~ret10#1, thread2Thread1of1ForFork1_plus_~a#1, thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork1_plus_#in~b#1, ~res2~0][35], [5#L61true, 4#L92-1true, 18#L69true, 200#(and (<= 1 ~N~0) (<= (+ |thread1Thread1of1ForFork0_~i~0#1| 1) ~N~0)), thread2Thread1of1ForFork1InUse, 35#L48-4true, thread3Thread1of1ForFork2InUse, 206#(and (<= (+ ~M~0 1) ~N~0) (<= (+ |thread3Thread1of1ForFork2_~i~2#1| 1) ~N~0)), 45#true, thread1Thread1of1ForFork0InUse]) [2024-02-20 12:15:52,719 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-02-20 12:15:52,719 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:15:52,719 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:15:52,719 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-02-20 12:15:52,763 INFO L124 PetriNetUnfolderBase]: 1035/1475 cut-off events. [2024-02-20 12:15:52,763 INFO L125 PetriNetUnfolderBase]: For 1816/1870 co-relation queries the response was YES. [2024-02-20 12:15:52,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5356 conditions, 1475 events. 1035/1475 cut-off events. For 1816/1870 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6399 event pairs, 216 based on Foata normal form. 96/1541 useless extension candidates. Maximal degree in co-relation 4611. Up to 1166 conditions per place. [2024-02-20 12:15:52,772 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 52 selfloop transitions, 5 changer transitions 1/64 dead transitions. [2024-02-20 12:15:52,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 64 transitions, 500 flow [2024-02-20 12:15:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:15:52,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:15:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-02-20 12:15:52,775 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-02-20 12:15:52,776 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2024-02-20 12:15:52,776 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 64 transitions, 500 flow [2024-02-20 12:15:52,776 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:15:52,776 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:15:52,776 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] [2024-02-20 12:15:52,777 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 12:15:52,777 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 1 more)] === [2024-02-20 12:15:52,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:15:52,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2142226493, now seen corresponding path program 1 times [2024-02-20 12:15:52,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:15:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778735181] [2024-02-20 12:15:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:15:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:15:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:15:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:15:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:15:53,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778735181] [2024-02-20 12:15:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778735181] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:15:53,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479149044] [2024-02-20 12:15:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:15:53,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:15:53,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:15:53,648 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) [2024-02-20 12:15:53,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 12:15:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:15:53,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 47 conjunts are in the unsatisfiable core [2024-02-20 12:15:53,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:15:53,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-02-20 12:15:53,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-02-20 12:15:53,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-02-20 12:15:53,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-02-20 12:15:53,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2024-02-20 12:15:53,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-02-20 12:15:53,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-02-20 12:15:53,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-02-20 12:15:53,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-02-20 12:15:53,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-02-20 12:15:53,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-02-20 12:15:53,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-02-20 12:15:53,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-02-20 12:15:53,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:15:53,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2024-02-20 12:15:53,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:15:54,025 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-20 12:15:54,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-02-20 12:15:54,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:15:54,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-02-20 12:15:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:15:54,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:16:06,804 INFO L349 Elim1Store]: treesize reduction 28, result has 64.6 percent of original size [2024-02-20 12:16:06,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1682 treesize of output 1252 [2024-02-20 12:16:06,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:16:06,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 737 treesize of output 693 [2024-02-20 12:16:11,773 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:11,847 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:11,876 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:15,301 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:15,357 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:15,386 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:17,048 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:17,106 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:17,136 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:16:21,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2024-02-20 12:16:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:16:25,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479149044] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:16:25,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:16:25,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-02-20 12:16:25,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496032317] [2024-02-20 12:16:25,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:16:25,254 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-20 12:16:25,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:16:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-20 12:16:25,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=697, Unknown=3, NotChecked=0, Total=812 [2024-02-20 12:16:29,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:16:33,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:16:33,730 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 37 [2024-02-20 12:16:33,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 64 transitions, 500 flow. Second operand has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:16:33,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:16:33,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 37 [2024-02-20 12:16:33,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:16:38,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:16:42,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:16:50,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:16:54,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 12:16:54,949 INFO L124 PetriNetUnfolderBase]: 2299/3281 cut-off events. [2024-02-20 12:16:54,949 INFO L125 PetriNetUnfolderBase]: For 2696/2713 co-relation queries the response was YES. [2024-02-20 12:16:54,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14097 conditions, 3281 events. 2299/3281 cut-off events. For 2696/2713 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15479 event pairs, 116 based on Foata normal form. 3/3274 useless extension candidates. Maximal degree in co-relation 11023. Up to 2175 conditions per place. [2024-02-20 12:16:54,974 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 191 selfloop transitions, 65 changer transitions 2/260 dead transitions. [2024-02-20 12:16:54,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 260 transitions, 2524 flow [2024-02-20 12:16:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 12:16:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 12:16:54,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 254 transitions. [2024-02-20 12:16:54,976 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3613086770981508 [2024-02-20 12:16:54,977 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2024-02-20 12:16:54,977 INFO L507 AbstractCegarLoop]: Abstraction has has 66 places, 260 transitions, 2524 flow [2024-02-20 12:16:54,977 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.344827586206897) internal successors, (213), 29 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:16:54,978 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:16:54,978 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] [2024-02-20 12:16:55,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 12:16:55,205 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-20 12:16:55,206 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 1 more)] === [2024-02-20 12:16:55,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:16:55,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1996447967, now seen corresponding path program 2 times [2024-02-20 12:16:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:16:55,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823096306] [2024-02-20 12:16:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:16:55,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:16:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:16:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:16:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:16:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823096306] [2024-02-20 12:16:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823096306] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:16:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015899094] [2024-02-20 12:16:56,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:16:56,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:16:56,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:16:56,009 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) [2024-02-20 12:16:56,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 12:16:56,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:16:56,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:16:56,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 41 conjunts are in the unsatisfiable core [2024-02-20 12:16:56,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:16:56,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:16:56,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:16:56,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-02-20 12:16:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:16:56,385 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:16:56,577 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:16:56,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 240 [2024-02-20 12:16:56,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:16:56,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 198 treesize of output 182 [2024-02-20 12:16:57,283 INFO L349 Elim1Store]: treesize reduction 49, result has 14.0 percent of original size [2024-02-20 12:16:57,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 71 [2024-02-20 12:16:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-02-20 12:16:57,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:16:57,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 122 [2024-02-20 12:16:57,418 INFO L349 Elim1Store]: treesize reduction 13, result has 77.2 percent of original size [2024-02-20 12:16:57,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 169 [2024-02-20 12:16:57,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:16:57,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015899094] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:16:57,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:16:57,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 25 [2024-02-20 12:16:57,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480533952] [2024-02-20 12:16:57,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:16:57,730 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:16:57,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:16:57,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:16:57,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:16:57,908 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-02-20 12:16:57,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 260 transitions, 2524 flow. Second operand has 26 states, 26 states have (on average 9.423076923076923) internal successors, (245), 26 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:16:57,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:16:57,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-02-20 12:16:57,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:16:59,164 INFO L124 PetriNetUnfolderBase]: 3192/4551 cut-off events. [2024-02-20 12:16:59,164 INFO L125 PetriNetUnfolderBase]: For 4941/4967 co-relation queries the response was YES. [2024-02-20 12:16:59,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23316 conditions, 4551 events. 3192/4551 cut-off events. For 4941/4967 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23073 event pairs, 156 based on Foata normal form. 7/4547 useless extension candidates. Maximal degree in co-relation 16565. Up to 3054 conditions per place. [2024-02-20 12:16:59,200 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 285 selfloop transitions, 75 changer transitions 3/382 dead transitions. [2024-02-20 12:16:59,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 382 transitions, 4448 flow [2024-02-20 12:16:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-20 12:16:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-20 12:16:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 297 transitions. [2024-02-20 12:16:59,203 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40135135135135136 [2024-02-20 12:16:59,205 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 47 predicate places. [2024-02-20 12:16:59,205 INFO L507 AbstractCegarLoop]: Abstraction has has 85 places, 382 transitions, 4448 flow [2024-02-20 12:16:59,205 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.423076923076923) internal successors, (245), 26 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:16:59,205 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:16:59,205 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] [2024-02-20 12:16:59,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-20 12:16:59,416 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:16:59,416 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 1 more)] === [2024-02-20 12:16:59,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:16:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1173656127, now seen corresponding path program 3 times [2024-02-20 12:16:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:16:59,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333279197] [2024-02-20 12:16:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:16:59,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:16:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:17:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333279197] [2024-02-20 12:17:00,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333279197] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:17:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917260842] [2024-02-20 12:17:00,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:17:00,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:00,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:17:00,264 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) [2024-02-20 12:17:00,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 12:17:00,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:17:00,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:17:00,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 41 conjunts are in the unsatisfiable core [2024-02-20 12:17:00,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:17:00,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:17:00,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:00,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-02-20 12:17:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:00,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:17:00,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:00,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 240 [2024-02-20 12:17:01,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:01,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 267 treesize of output 227 [2024-02-20 12:17:01,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:01,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 134 [2024-02-20 12:17:01,215 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:01,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 190 [2024-02-20 12:17:01,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:01,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 134 [2024-02-20 12:17:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:01,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917260842] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:17:01,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:17:01,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-02-20 12:17:01,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564417868] [2024-02-20 12:17:01,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:17:01,384 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-20 12:17:01,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:17:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-20 12:17:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2024-02-20 12:17:01,648 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-02-20 12:17:01,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 382 transitions, 4448 flow. Second operand has 29 states, 29 states have (on average 10.137931034482758) internal successors, (294), 29 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:01,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:17:01,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-02-20 12:17:01,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:17:03,133 INFO L124 PetriNetUnfolderBase]: 4080/5825 cut-off events. [2024-02-20 12:17:03,134 INFO L125 PetriNetUnfolderBase]: For 9853/9877 co-relation queries the response was YES. [2024-02-20 12:17:03,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34366 conditions, 5825 events. 4080/5825 cut-off events. For 9853/9877 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 31257 event pairs, 160 based on Foata normal form. 6/5820 useless extension candidates. Maximal degree in co-relation 24573. Up to 4132 conditions per place. [2024-02-20 12:17:03,177 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 369 selfloop transitions, 82 changer transitions 5/495 dead transitions. [2024-02-20 12:17:03,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 495 transitions, 6758 flow [2024-02-20 12:17:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-20 12:17:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-20 12:17:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 338 transitions. [2024-02-20 12:17:03,180 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-02-20 12:17:03,182 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-02-20 12:17:03,182 INFO L507 AbstractCegarLoop]: Abstraction has has 106 places, 495 transitions, 6758 flow [2024-02-20 12:17:03,182 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.137931034482758) internal successors, (294), 29 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:03,182 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:17:03,183 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] [2024-02-20 12:17:03,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 12:17:03,393 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:03,394 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 1 more)] === [2024-02-20 12:17:03,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:17:03,395 INFO L85 PathProgramCache]: Analyzing trace with hash 807969057, now seen corresponding path program 4 times [2024-02-20 12:17:03,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:17:03,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958199049] [2024-02-20 12:17:03,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:17:03,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:17:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:04,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:17:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958199049] [2024-02-20 12:17:04,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958199049] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:17:04,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937972556] [2024-02-20 12:17:04,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:17:04,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:04,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:17:04,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:17:04,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 12:17:04,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:17:04,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:17:04,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-20 12:17:04,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:17:04,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:17:04,735 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:04,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2024-02-20 12:17:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:17:04,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:17:05,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:05,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-02-20 12:17:05,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:05,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 325 treesize of output 229 [2024-02-20 12:17:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:17:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937972556] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:17:05,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:17:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 27 [2024-02-20 12:17:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062207109] [2024-02-20 12:17:05,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:17:05,532 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-20 12:17:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:17:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-20 12:17:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-02-20 12:17:05,746 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-02-20 12:17:05,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 495 transitions, 6758 flow. Second operand has 28 states, 28 states have (on average 9.357142857142858) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:05,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:17:05,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-02-20 12:17:05,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:17:07,769 INFO L124 PetriNetUnfolderBase]: 5043/7183 cut-off events. [2024-02-20 12:17:07,770 INFO L125 PetriNetUnfolderBase]: For 16144/16174 co-relation queries the response was YES. [2024-02-20 12:17:07,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48569 conditions, 7183 events. 5043/7183 cut-off events. For 16144/16174 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 39854 event pairs, 166 based on Foata normal form. 5/7177 useless extension candidates. Maximal degree in co-relation 36965. Up to 5490 conditions per place. [2024-02-20 12:17:07,821 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 498 selfloop transitions, 192 changer transitions 10/719 dead transitions. [2024-02-20 12:17:07,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 719 transitions, 11283 flow [2024-02-20 12:17:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-20 12:17:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-20 12:17:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 442 transitions. [2024-02-20 12:17:07,823 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3733108108108108 [2024-02-20 12:17:07,823 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 99 predicate places. [2024-02-20 12:17:07,824 INFO L507 AbstractCegarLoop]: Abstraction has has 137 places, 719 transitions, 11283 flow [2024-02-20 12:17:07,824 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.357142857142858) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:07,824 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:17:07,824 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] [2024-02-20 12:17:07,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 12:17:08,035 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:08,036 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 1 more)] === [2024-02-20 12:17:08,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:17:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1026320643, now seen corresponding path program 5 times [2024-02-20 12:17:08,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:17:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828773723] [2024-02-20 12:17:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:17:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:17:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:08,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:17:08,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828773723] [2024-02-20 12:17:08,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828773723] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:17:08,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955294511] [2024-02-20 12:17:08,796 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:17:08,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:08,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:17:08,797 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:17:08,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 12:17:08,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:17:08,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:17:08,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 40 conjunts are in the unsatisfiable core [2024-02-20 12:17:08,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:17:08,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:17:09,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:09,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-02-20 12:17:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:17:09,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:17:09,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:17:09,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955294511] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:17:09,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:17:09,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 27 [2024-02-20 12:17:09,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636312546] [2024-02-20 12:17:09,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:17:09,463 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-02-20 12:17:09,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:17:09,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-02-20 12:17:09,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-02-20 12:17:09,662 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2024-02-20 12:17:09,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 719 transitions, 11283 flow. Second operand has 28 states, 28 states have (on average 8.321428571428571) internal successors, (233), 28 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:09,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:17:09,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2024-02-20 12:17:09,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:17:12,917 INFO L124 PetriNetUnfolderBase]: 8849/12684 cut-off events. [2024-02-20 12:17:12,918 INFO L125 PetriNetUnfolderBase]: For 74417/74575 co-relation queries the response was YES. [2024-02-20 12:17:12,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96027 conditions, 12684 events. 8849/12684 cut-off events. For 74417/74575 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 69419 event pairs, 372 based on Foata normal form. 6/12615 useless extension candidates. Maximal degree in co-relation 69750. Up to 9800 conditions per place. [2024-02-20 12:17:13,006 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 1054 selfloop transitions, 484 changer transitions 13/1587 dead transitions. [2024-02-20 12:17:13,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 1587 transitions, 28045 flow [2024-02-20 12:17:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-02-20 12:17:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-02-20 12:17:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 504 transitions. [2024-02-20 12:17:13,009 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3681519357195033 [2024-02-20 12:17:13,009 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 135 predicate places. [2024-02-20 12:17:13,009 INFO L507 AbstractCegarLoop]: Abstraction has has 173 places, 1587 transitions, 28045 flow [2024-02-20 12:17:13,010 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.321428571428571) internal successors, (233), 28 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:13,010 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:17:13,010 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] [2024-02-20 12:17:13,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 12:17:13,221 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:13,222 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:17:13,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:17:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash 662423837, now seen corresponding path program 6 times [2024-02-20 12:17:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:17:13,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449956878] [2024-02-20 12:17:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:17:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:17:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:13,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:17:13,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449956878] [2024-02-20 12:17:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449956878] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:17:13,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372451545] [2024-02-20 12:17:13,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:17:13,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:13,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:17:13,998 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:17:14,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 12:17:14,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:17:14,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:17:14,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 42 conjunts are in the unsatisfiable core [2024-02-20 12:17:14,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:17:14,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-02-20 12:17:14,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:14,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-02-20 12:17:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:14,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:17:14,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:14,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 232 [2024-02-20 12:17:14,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:14,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 258 treesize of output 234 [2024-02-20 12:17:15,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:17:15,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 369 treesize of output 297 [2024-02-20 12:17:16,374 INFO L349 Elim1Store]: treesize reduction 29, result has 49.1 percent of original size [2024-02-20 12:17:16,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 91 [2024-02-20 12:17:16,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:17:16,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372451545] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:17:16,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:17:16,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 30 [2024-02-20 12:17:16,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534092262] [2024-02-20 12:17:16,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:17:16,494 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 12:17:16,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:17:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 12:17:16,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2024-02-20 12:17:16,752 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-02-20 12:17:16,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 1587 transitions, 28045 flow. Second operand has 31 states, 31 states have (on average 9.129032258064516) internal successors, (283), 31 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:16,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:17:16,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-02-20 12:17:16,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:17:22,876 INFO L124 PetriNetUnfolderBase]: 15117/21586 cut-off events. [2024-02-20 12:17:22,877 INFO L125 PetriNetUnfolderBase]: For 165142/165296 co-relation queries the response was YES. [2024-02-20 12:17:22,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181957 conditions, 21586 events. 15117/21586 cut-off events. For 165142/165296 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 126822 event pairs, 636 based on Foata normal form. 3/21514 useless extension candidates. Maximal degree in co-relation 112809. Up to 18347 conditions per place. [2024-02-20 12:17:23,229 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 1989 selfloop transitions, 739 changer transitions 42/2818 dead transitions. [2024-02-20 12:17:23,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 2818 transitions, 55826 flow [2024-02-20 12:17:23,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-02-20 12:17:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-02-20 12:17:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 595 transitions. [2024-02-20 12:17:23,248 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40202702702702703 [2024-02-20 12:17:23,248 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 174 predicate places. [2024-02-20 12:17:23,248 INFO L507 AbstractCegarLoop]: Abstraction has has 212 places, 2818 transitions, 55826 flow [2024-02-20 12:17:23,249 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.129032258064516) internal successors, (283), 31 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:23,249 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:17:23,249 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-02-20 12:17:23,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 12:17:23,476 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:23,477 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:17:23,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:17:23,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1644172868, now seen corresponding path program 7 times [2024-02-20 12:17:23,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:17:23,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087056010] [2024-02-20 12:17:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:17:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:17:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:17:23,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:17:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087056010] [2024-02-20 12:17:23,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087056010] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:17:23,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296083938] [2024-02-20 12:17:23,640 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:17:23,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:23,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:17:23,641 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:17:23,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 12:17:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:23,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:17:23,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:17:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:17:23,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:17:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:17:23,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296083938] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:17:23,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:17:23,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-02-20 12:17:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640547783] [2024-02-20 12:17:23,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:17:23,890 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 12:17:23,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:17:23,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 12:17:23,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-02-20 12:17:23,929 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-02-20 12:17:23,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 2818 transitions, 55826 flow. Second operand has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:23,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:17:23,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-02-20 12:17:23,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:17:34,908 INFO L124 PetriNetUnfolderBase]: 21707/30974 cut-off events. [2024-02-20 12:17:34,909 INFO L125 PetriNetUnfolderBase]: For 296328/296486 co-relation queries the response was YES. [2024-02-20 12:17:34,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283887 conditions, 30974 events. 21707/30974 cut-off events. For 296328/296486 co-relation queries the response was YES. Maximal size of possible extension queue 1214. Compared 190140 event pairs, 946 based on Foata normal form. 0/30895 useless extension candidates. Maximal degree in co-relation 135869. Up to 25895 conditions per place. [2024-02-20 12:17:35,233 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 3792 selfloop transitions, 12 changer transitions 67/3991 dead transitions. [2024-02-20 12:17:35,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 3991 transitions, 87667 flow [2024-02-20 12:17:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 12:17:35,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 12:17:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-02-20 12:17:35,248 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-02-20 12:17:35,249 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 168 predicate places. [2024-02-20 12:17:35,249 INFO L507 AbstractCegarLoop]: Abstraction has has 206 places, 3991 transitions, 87667 flow [2024-02-20 12:17:35,249 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.3125) internal successors, (197), 16 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:35,249 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:17:35,254 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-02-20 12:17:35,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 12:17:35,455 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-02-20 12:17:35,456 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:17:35,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:17:35,456 INFO L85 PathProgramCache]: Analyzing trace with hash 27269639, now seen corresponding path program 8 times [2024-02-20 12:17:35,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:17:35,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383349598] [2024-02-20 12:17:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:17:35,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:17:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:17:35,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:17:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383349598] [2024-02-20 12:17:35,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383349598] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:17:35,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117454892] [2024-02-20 12:17:35,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:17:35,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:35,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:17:35,567 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:17:35,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 12:17:35,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:17:35,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:17:35,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:17:35,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:17:35,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:17:35,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:17:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:17:35,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117454892] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:17:35,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:17:35,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2024-02-20 12:17:35,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92621418] [2024-02-20 12:17:35,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:17:35,901 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:17:35,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:17:35,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:17:35,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:17:35,931 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 37 [2024-02-20 12:17:35,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 3991 transitions, 87667 flow. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:35,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:17:35,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 37 [2024-02-20 12:17:35,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:17:56,464 INFO L124 PetriNetUnfolderBase]: 21652/30768 cut-off events. [2024-02-20 12:17:56,465 INFO L125 PetriNetUnfolderBase]: For 273419/273419 co-relation queries the response was YES. [2024-02-20 12:17:56,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306892 conditions, 30768 events. 21652/30768 cut-off events. For 273419/273419 co-relation queries the response was YES. Maximal size of possible extension queue 1230. Compared 185989 event pairs, 273 based on Foata normal form. 1018/31780 useless extension candidates. Maximal degree in co-relation 151167. Up to 25915 conditions per place. [2024-02-20 12:17:56,974 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 4736 selfloop transitions, 1278 changer transitions 34/6049 dead transitions. [2024-02-20 12:17:56,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 6049 transitions, 139151 flow [2024-02-20 12:17:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 12:17:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 12:17:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 493 transitions. [2024-02-20 12:17:56,978 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-02-20 12:17:56,978 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 201 predicate places. [2024-02-20 12:17:56,978 INFO L507 AbstractCegarLoop]: Abstraction has has 239 places, 6049 transitions, 139151 flow [2024-02-20 12:17:56,978 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 20 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:56,978 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:17:56,979 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2024-02-20 12:17:56,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-02-20 12:17:57,190 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:57,191 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:17:57,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:17:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -92830048, now seen corresponding path program 9 times [2024-02-20 12:17:57,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:17:57,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576951345] [2024-02-20 12:17:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:17:57,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:17:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:17:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:17:57,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:17:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576951345] [2024-02-20 12:17:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576951345] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:17:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634349201] [2024-02-20 12:17:57,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:17:57,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:17:57,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:17:57,449 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:17:57,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 12:17:57,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:17:57,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:17:57,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 12:17:57,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:17:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:17:57,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:17:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:17:57,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634349201] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:17:57,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:17:57,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-02-20 12:17:57,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265754828] [2024-02-20 12:17:57,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:17:57,809 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 12:17:57,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:17:57,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 12:17:57,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2024-02-20 12:17:57,858 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-02-20 12:17:57,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 6049 transitions, 139151 flow. Second operand has 15 states, 15 states have (on average 11.666666666666666) internal successors, (175), 15 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:17:57,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:17:57,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-02-20 12:17:57,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:18:23,398 INFO L124 PetriNetUnfolderBase]: 15413/22573 cut-off events. [2024-02-20 12:18:23,399 INFO L125 PetriNetUnfolderBase]: For 235279/235279 co-relation queries the response was YES. [2024-02-20 12:18:23,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245986 conditions, 22573 events. 15413/22573 cut-off events. For 235279/235279 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 138276 event pairs, 239 based on Foata normal form. 1346/23913 useless extension candidates. Maximal degree in co-relation 92415. Up to 18475 conditions per place. [2024-02-20 12:18:23,784 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 3362 selfloop transitions, 469 changer transitions 309/4404 dead transitions. [2024-02-20 12:18:23,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 4404 transitions, 109714 flow [2024-02-20 12:18:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 12:18:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 12:18:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-02-20 12:18:23,785 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-02-20 12:18:23,785 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 190 predicate places. [2024-02-20 12:18:23,786 INFO L507 AbstractCegarLoop]: Abstraction has has 228 places, 4404 transitions, 109714 flow [2024-02-20 12:18:23,786 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.666666666666666) internal successors, (175), 15 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:18:23,786 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:18:23,787 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2024-02-20 12:18:23,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 12:18:24,000 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-20 12:18:24,001 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:18:24,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:18:24,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1310743706, now seen corresponding path program 10 times [2024-02-20 12:18:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:18:24,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612541429] [2024-02-20 12:18:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:18:24,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:18:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:18:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:18:24,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:18:24,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612541429] [2024-02-20 12:18:24,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612541429] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:18:24,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923966042] [2024-02-20 12:18:24,098 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:18:24,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:18:24,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:18:24,099 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:18:24,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 12:18:24,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:18:24,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:18:24,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:18:24,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:18:24,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:18:24,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:18:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:18:24,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923966042] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:18:24,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:18:24,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19 [2024-02-20 12:18:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680545630] [2024-02-20 12:18:24,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:18:24,413 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:18:24,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:18:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:18:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:18:24,465 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 37 [2024-02-20 12:18:24,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 4404 transitions, 109714 flow. Second operand has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 19 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:18:24,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:18:24,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 37 [2024-02-20 12:18:24,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:18:40,439 INFO L124 PetriNetUnfolderBase]: 11415/17238 cut-off events. [2024-02-20 12:18:40,439 INFO L125 PetriNetUnfolderBase]: For 139229/139229 co-relation queries the response was YES. [2024-02-20 12:18:40,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208785 conditions, 17238 events. 11415/17238 cut-off events. For 139229/139229 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 106944 event pairs, 125 based on Foata normal form. 908/18140 useless extension candidates. Maximal degree in co-relation 77664. Up to 13989 conditions per place. [2024-02-20 12:18:40,607 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 2100 selfloop transitions, 612 changer transitions 1660/4373 dead transitions. [2024-02-20 12:18:40,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 4373 transitions, 116191 flow [2024-02-20 12:18:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-02-20 12:18:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-02-20 12:18:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 491 transitions. [2024-02-20 12:18:40,642 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37915057915057915 [2024-02-20 12:18:40,643 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 224 predicate places. [2024-02-20 12:18:40,643 INFO L507 AbstractCegarLoop]: Abstraction has has 262 places, 4373 transitions, 116191 flow [2024-02-20 12:18:40,644 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 19 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:18:40,644 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:18:40,644 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] [2024-02-20 12:18:40,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 12:18:40,844 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-20 12:18:40,845 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:18:40,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:18:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1527073855, now seen corresponding path program 1 times [2024-02-20 12:18:40,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:18:40,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302019362] [2024-02-20 12:18:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:18:40,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:18:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:18:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:18:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:18:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302019362] [2024-02-20 12:18:40,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302019362] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:18:40,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734710438] [2024-02-20 12:18:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:18:40,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:18:40,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:18:40,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:18:41,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 12:18:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:18:41,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:18:41,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:18:41,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:18:41,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:18:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:18:41,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734710438] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:18:41,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:18:41,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 12:18:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230811180] [2024-02-20 12:18:41,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:18:41,284 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:18:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:18:41,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:18:41,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:18:41,342 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-02-20 12:18:41,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 4373 transitions, 116191 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:18:41,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:18:41,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-02-20 12:18:41,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:18:49,232 INFO L124 PetriNetUnfolderBase]: 7147/11083 cut-off events. [2024-02-20 12:18:49,232 INFO L125 PetriNetUnfolderBase]: For 89529/89529 co-relation queries the response was YES. [2024-02-20 12:18:49,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142010 conditions, 11083 events. 7147/11083 cut-off events. For 89529/89529 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 66299 event pairs, 115 based on Foata normal form. 542/11619 useless extension candidates. Maximal degree in co-relation 78369. Up to 8623 conditions per place. [2024-02-20 12:18:49,332 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 787 selfloop transitions, 6 changer transitions 1905/2867 dead transitions. [2024-02-20 12:18:49,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 2867 transitions, 81147 flow [2024-02-20 12:18:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 12:18:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 12:18:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-02-20 12:18:49,333 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-02-20 12:18:49,335 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 223 predicate places. [2024-02-20 12:18:49,335 INFO L507 AbstractCegarLoop]: Abstraction has has 261 places, 2867 transitions, 81147 flow [2024-02-20 12:18:49,335 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:18:49,335 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:18:49,335 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2024-02-20 12:18:49,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 12:18:49,548 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-20 12:18:49,548 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:18:49,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:18:49,549 INFO L85 PathProgramCache]: Analyzing trace with hash -751642308, now seen corresponding path program 11 times [2024-02-20 12:18:49,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:18:49,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550717820] [2024-02-20 12:18:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:18:49,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:18:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:18:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:18:49,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:18:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550717820] [2024-02-20 12:18:49,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550717820] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:18:49,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265208917] [2024-02-20 12:18:49,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:18:49,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:18:49,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:18:49,806 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:18:49,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 12:18:49,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-20 12:18:49,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:18:49,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:18:49,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:18:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:18:50,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:18:50,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:18:50,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265208917] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:18:50,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:18:50,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-02-20 12:18:50,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616538687] [2024-02-20 12:18:50,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:18:50,296 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:18:50,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:18:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:18:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:18:50,357 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 37 [2024-02-20 12:18:50,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 2867 transitions, 81147 flow. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:18:50,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:18:50,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 37 [2024-02-20 12:18:50,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:19:04,753 INFO L124 PetriNetUnfolderBase]: 16894/24921 cut-off events. [2024-02-20 12:19:04,754 INFO L125 PetriNetUnfolderBase]: For 228081/228081 co-relation queries the response was YES. [2024-02-20 12:19:04,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344555 conditions, 24921 events. 16894/24921 cut-off events. For 228081/228081 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 148706 event pairs, 47 based on Foata normal form. 90/25005 useless extension candidates. Maximal degree in co-relation 265538. Up to 21831 conditions per place. [2024-02-20 12:19:05,073 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 3142 selfloop transitions, 1066 changer transitions 2296/6505 dead transitions. [2024-02-20 12:19:05,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 6505 transitions, 189263 flow [2024-02-20 12:19:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-02-20 12:19:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-02-20 12:19:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 710 transitions. [2024-02-20 12:19:05,075 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3620601733809281 [2024-02-20 12:19:05,076 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 275 predicate places. [2024-02-20 12:19:05,076 INFO L507 AbstractCegarLoop]: Abstraction has has 313 places, 6505 transitions, 189263 flow [2024-02-20 12:19:05,076 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 21 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:19:05,076 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:19:05,077 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2024-02-20 12:19:05,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-02-20 12:19:05,289 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-20 12:19:05,290 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:19:05,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:19:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1125649186, now seen corresponding path program 12 times [2024-02-20 12:19:05,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:19:05,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017485562] [2024-02-20 12:19:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:19:05,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:19:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:19:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:19:05,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:19:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017485562] [2024-02-20 12:19:05,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017485562] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:19:05,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740670536] [2024-02-20 12:19:05,433 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:19:05,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:19:05,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:19:05,434 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:19:05,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 12:19:05,584 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:19:05,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:19:05,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:19:05,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:19:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:19:05,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:19:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:19:06,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740670536] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:19:06,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:19:06,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-02-20 12:19:06,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645743658] [2024-02-20 12:19:06,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:19:06,054 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:19:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:19:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:19:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:19:06,078 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 37 [2024-02-20 12:19:06,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 6505 transitions, 189263 flow. Second operand has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:19:06,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:19:06,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 37 [2024-02-20 12:19:06,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:20:09,044 INFO L124 PetriNetUnfolderBase]: 24791/36142 cut-off events. [2024-02-20 12:20:09,045 INFO L125 PetriNetUnfolderBase]: For 324056/324056 co-relation queries the response was YES. [2024-02-20 12:20:09,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542393 conditions, 36142 events. 24791/36142 cut-off events. For 324056/324056 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 223640 event pairs, 55 based on Foata normal form. 124/36260 useless extension candidates. Maximal degree in co-relation 448811. Up to 32651 conditions per place. [2024-02-20 12:20:09,747 INFO L140 encePairwiseOnDemand]: 20/37 looper letters, 4793 selfloop transitions, 1944 changer transitions 2574/9312 dead transitions. [2024-02-20 12:20:09,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 9312 transitions, 291322 flow [2024-02-20 12:20:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-02-20 12:20:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-02-20 12:20:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 692 transitions. [2024-02-20 12:20:09,750 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37405405405405406 [2024-02-20 12:20:09,751 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 324 predicate places. [2024-02-20 12:20:09,751 INFO L507 AbstractCegarLoop]: Abstraction has has 362 places, 9312 transitions, 291322 flow [2024-02-20 12:20:09,751 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.833333333333333) internal successors, (141), 18 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:20:09,751 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:20:09,751 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2024-02-20 12:20:09,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-20 12:20:09,964 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:20:09,966 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:20:09,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:20:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 562947678, now seen corresponding path program 13 times [2024-02-20 12:20:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:20:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958554409] [2024-02-20 12:20:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:20:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:20:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:20:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:20:10,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:20:10,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958554409] [2024-02-20 12:20:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958554409] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:20:10,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099462408] [2024-02-20 12:20:10,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:20:10,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:20:10,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:20:10,133 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:20:10,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 12:20:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:20:10,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:20:10,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:20:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:20:10,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:20:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:20:10,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099462408] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:20:10,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:20:10,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-02-20 12:20:10,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771410496] [2024-02-20 12:20:10,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:20:10,550 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-20 12:20:10,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:20:10,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-20 12:20:10,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-02-20 12:20:10,595 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2024-02-20 12:20:10,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 9312 transitions, 291322 flow. Second operand has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 22 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:20:10,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:20:10,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2024-02-20 12:20:10,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:09,877 INFO L124 PetriNetUnfolderBase]: 32089/46518 cut-off events. [2024-02-20 12:22:09,878 INFO L125 PetriNetUnfolderBase]: For 453749/453749 co-relation queries the response was YES. [2024-02-20 12:22:10,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741218 conditions, 46518 events. 32089/46518 cut-off events. For 453749/453749 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 295672 event pairs, 49 based on Foata normal form. 90/46602 useless extension candidates. Maximal degree in co-relation 612741. Up to 42613 conditions per place. [2024-02-20 12:22:10,627 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 6198 selfloop transitions, 1598 changer transitions 3394/11859 dead transitions. [2024-02-20 12:22:10,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 11859 transitions, 398035 flow [2024-02-20 12:22:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-20 12:22:10,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-20 12:22:10,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 364 transitions. [2024-02-20 12:22:10,629 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-02-20 12:22:10,630 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 345 predicate places. [2024-02-20 12:22:10,630 INFO L507 AbstractCegarLoop]: Abstraction has has 383 places, 11859 transitions, 398035 flow [2024-02-20 12:22:10,630 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.636363636363637) internal successors, (190), 22 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:10,630 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:10,630 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2024-02-20 12:22:10,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-02-20 12:22:10,843 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-20 12:22:10,844 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:22:10,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:10,844 INFO L85 PathProgramCache]: Analyzing trace with hash 823617754, now seen corresponding path program 14 times [2024-02-20 12:22:10,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:10,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825241862] [2024-02-20 12:22:10,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:10,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:22:10,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:10,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825241862] [2024-02-20 12:22:10,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825241862] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:10,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337260648] [2024-02-20 12:22:10,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:22:10,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:10,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:10,996 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:22:10,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 12:22:11,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:22:11,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:11,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:22:11,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:22:11,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:22:11,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337260648] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:11,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:11,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-02-20 12:22:11,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803622553] [2024-02-20 12:22:11,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:11,416 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:22:11,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:11,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:22:11,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:22:11,472 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2024-02-20 12:22:11,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 11859 transitions, 398035 flow. Second operand has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 21 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:11,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:11,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2024-02-20 12:22:11,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:25:02,296 INFO L124 PetriNetUnfolderBase]: 34071/49274 cut-off events. [2024-02-20 12:25:02,296 INFO L125 PetriNetUnfolderBase]: For 513127/513127 co-relation queries the response was YES. [2024-02-20 12:25:02,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 830047 conditions, 49274 events. 34071/49274 cut-off events. For 513127/513127 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 314048 event pairs, 65 based on Foata normal form. 124/49392 useless extension candidates. Maximal degree in co-relation 696135. Up to 45382 conditions per place. [2024-02-20 12:25:03,090 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 6281 selfloop transitions, 2128 changer transitions 3337/12415 dead transitions. [2024-02-20 12:25:03,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 12415 transitions, 440964 flow [2024-02-20 12:25:03,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-02-20 12:25:03,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-02-20 12:25:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 491 transitions. [2024-02-20 12:25:03,092 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4423423423423423 [2024-02-20 12:25:03,092 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 374 predicate places. [2024-02-20 12:25:03,092 INFO L507 AbstractCegarLoop]: Abstraction has has 412 places, 12415 transitions, 440964 flow [2024-02-20 12:25:03,092 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 21 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:25:03,093 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:25:03,093 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2024-02-20 12:25:03,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-02-20 12:25:03,304 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 12:25:03,305 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:25:03,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:25:03,305 INFO L85 PathProgramCache]: Analyzing trace with hash 934022370, now seen corresponding path program 15 times [2024-02-20 12:25:03,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:25:03,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812229179] [2024-02-20 12:25:03,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:25:03,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:25:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:25:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-02-20 12:25:03,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:25:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812229179] [2024-02-20 12:25:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812229179] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:25:03,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082705935] [2024-02-20 12:25:03,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:25:03,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:25:03,452 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:25:03,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 12:25:03,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:25:03,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:25:03,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:25:03,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:25:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-02-20 12:25:03,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:25:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-02-20 12:25:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082705935] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:25:03,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:25:03,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2024-02-20 12:25:03,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575337206] [2024-02-20 12:25:03,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:25:03,842 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-20 12:25:03,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:25:03,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-20 12:25:03,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-02-20 12:25:03,889 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 37 [2024-02-20 12:25:03,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 12415 transitions, 440964 flow. Second operand has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:25:03,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:25:03,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 37 [2024-02-20 12:25:03,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:29:29,824 INFO L124 PetriNetUnfolderBase]: 50836/72665 cut-off events. [2024-02-20 12:29:29,825 INFO L125 PetriNetUnfolderBase]: For 760886/760886 co-relation queries the response was YES. [2024-02-20 12:29:30,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288275 conditions, 72665 events. 50836/72665 cut-off events. For 760886/760886 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 471493 event pairs, 63 based on Foata normal form. 90/72749 useless extension candidates. Maximal degree in co-relation 1140882. Up to 68747 conditions per place. [2024-02-20 12:29:31,433 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 9400 selfloop transitions, 3139 changer transitions 3412/16620 dead transitions. [2024-02-20 12:29:31,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 16620 transitions, 627550 flow [2024-02-20 12:29:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-02-20 12:29:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-02-20 12:29:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 783 transitions. [2024-02-20 12:29:31,435 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-02-20 12:29:31,435 INFO L308 CegarLoopForPetriNet]: 38 programPoint places, 418 predicate places. [2024-02-20 12:29:31,435 INFO L507 AbstractCegarLoop]: Abstraction has has 456 places, 16620 transitions, 627550 flow [2024-02-20 12:29:31,436 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.227272727272727) internal successors, (181), 22 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:29:31,436 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:29:31,436 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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] [2024-02-20 12:29:31,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-02-20 12:29:31,654 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:29:31,655 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 12:29:31,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:29:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1194692446, now seen corresponding path program 16 times [2024-02-20 12:29:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:29:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282139972] [2024-02-20 12:29:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:29:31,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:29:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:29:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-02-20 12:29:31,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:29:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282139972] [2024-02-20 12:29:31,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282139972] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:29:31,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223226992] [2024-02-20 12:29:31,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:29:31,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:29:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:29:31,800 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:29:31,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 12:29:31,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:29:31,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:29:31,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:29:31,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:29:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:29:32,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:29:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 12:29:32,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223226992] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:29:32,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:29:32,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-02-20 12:29:32,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98667435] [2024-02-20 12:29:32,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:29:32,327 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:29:32,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:29:32,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:29:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:29:32,351 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 37 [2024-02-20 12:29:32,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 16620 transitions, 627550 flow. Second operand has 19 states, 19 states have (on average 7.2105263157894735) internal successors, (137), 19 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:29:32,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:29:32,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 37 [2024-02-20 12:29:32,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15