./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-array.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-min-array.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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --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 12:22:01,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:22:01,885 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:22:01,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:22:01,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:22:01,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:22:01,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:22:01,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:22:01,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:22:01,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:22:01,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:22:01,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:22:01,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:22:01,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:22:01,937 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:22:01,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:22:01,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:22:01,938 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:22:01,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:22:01,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:22:01,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:22:01,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:22:01,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:22:01,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:22:01,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:22:01,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:22:01,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:22:01,940 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:22:01,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:22:01,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:22:01,942 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:22:01,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:22:01,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:22:01,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:22:01,943 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:22:01,943 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:22:01,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:22:01,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:22:01,944 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:22:01,944 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:22:01,944 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:22:01,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:22:01,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:22:01,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:22:02,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:22:02,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:22:02,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:22:02,261 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:22:02,262 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:22:02,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2024-02-20 12:22:03,484 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:22:03,717 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:22:03,717 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2024-02-20 12:22:03,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038ef971a/3ac62741894842e3a05ed495065a6c73/FLAG6a4870418 [2024-02-20 12:22:03,744 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/038ef971a/3ac62741894842e3a05ed495065a6c73 [2024-02-20 12:22:03,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:22:03,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:22:03,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:22:03,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:22:03,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:22:03,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:22:03" (1/1) ... [2024-02-20 12:22:03,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b75e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:03, skipping insertion in model container [2024-02-20 12:22:03,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:22:03" (1/1) ... [2024-02-20 12:22:03,787 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:22:03,971 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-min-array.wvr.c[2553,2566] [2024-02-20 12:22:03,980 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:22:03,989 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:22:04,008 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-min-array.wvr.c[2553,2566] [2024-02-20 12:22:04,011 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:22:04,025 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:22:04,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04 WrapperNode [2024-02-20 12:22:04,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:22:04,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:22:04,027 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:22:04,027 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:22:04,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,042 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,062 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2024-02-20 12:22:04,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:22:04,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:22:04,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:22:04,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:22:04,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,131 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-02-20 12:22:04,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,153 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,155 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,156 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:22:04,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:22:04,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:22:04,160 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:22:04,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (1/1) ... [2024-02-20 12:22:04,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:22:04,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:04,200 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 12:22:04,228 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 12:22:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:22:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:22:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:22:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:22:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:22:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 12:22:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 12:22:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:22:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:22:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:22:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 12:22:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 12:22:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:22:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:22:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:22:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:22:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 12:22:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 12:22:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:22:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:22:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 12:22:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:22:04,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:22:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:22:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:22:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:22:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 12:22:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 12:22:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:22:04,270 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 12:22:04,392 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:22:04,394 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:22:04,633 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:22:04,634 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:22:04,844 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:22:04,844 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-20 12:22:04,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:22:04 BoogieIcfgContainer [2024-02-20 12:22:04,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:22:04,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:22:04,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:22:04,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:22:04,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:22:03" (1/3) ... [2024-02-20 12:22:04,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edcf633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:22:04, skipping insertion in model container [2024-02-20 12:22:04,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:22:04" (2/3) ... [2024-02-20 12:22:04,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4edcf633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:22:04, skipping insertion in model container [2024-02-20 12:22:04,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:22:04" (3/3) ... [2024-02-20 12:22:04,856 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2024-02-20 12:22:04,876 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:22:04,877 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:22:04,877 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:22:04,940 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 12:22:04,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 91 flow [2024-02-20 12:22:05,022 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-02-20 12:22:05,023 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:22:05,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 4/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-02-20 12:22:05,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 91 flow [2024-02-20 12:22:05,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 80 flow [2024-02-20 12:22:05,045 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:22:05,052 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;@30fd6df1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:22:05,053 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 12:22:05,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:22:05,071 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-02-20 12:22:05,071 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 12:22:05,072 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:05,072 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] [2024-02-20 12:22:05,073 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 12:22:05,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash 440371353, now seen corresponding path program 1 times [2024-02-20 12:22:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30298277] [2024-02-20 12:22:05,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:05,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:05,446 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 12:22:05,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:05,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30298277] [2024-02-20 12:22:05,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30298277] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:05,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:05,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:22:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708189036] [2024-02-20 12:22:05,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:05,456 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:22:05,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:05,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:22:05,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:22:05,553 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-20 12:22:05,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 12:22:05,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:05,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-20 12:22:05,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:05,779 INFO L124 PetriNetUnfolderBase]: 655/1008 cut-off events. [2024-02-20 12:22:05,780 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-02-20 12:22:05,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 1008 events. 655/1008 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4385 event pairs, 93 based on Foata normal form. 1/993 useless extension candidates. Maximal degree in co-relation 1605. Up to 822 conditions per place. [2024-02-20 12:22:05,791 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 35 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2024-02-20 12:22:05,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 207 flow [2024-02-20 12:22:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:22:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:22:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-02-20 12:22:05,803 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-02-20 12:22:05,807 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-02-20 12:22:05,807 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 207 flow [2024-02-20 12:22:05,807 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 12:22:05,808 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:05,808 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 12:22:05,808 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:22:05,808 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 12:22:05,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1717670322, now seen corresponding path program 1 times [2024-02-20 12:22:05,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107859285] [2024-02-20 12:22:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:06,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:06,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107859285] [2024-02-20 12:22:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107859285] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:06,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:06,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 12:22:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335332711] [2024-02-20 12:22:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:06,076 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 12:22:06,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 12:22:06,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 12:22:06,083 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-20 12:22:06,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 47 transitions, 207 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 12:22:06,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:06,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-20 12:22:06,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:06,323 INFO L124 PetriNetUnfolderBase]: 655/1009 cut-off events. [2024-02-20 12:22:06,324 INFO L125 PetriNetUnfolderBase]: For 192/224 co-relation queries the response was YES. [2024-02-20 12:22:06,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 1009 events. 655/1009 cut-off events. For 192/224 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4429 event pairs, 93 based on Foata normal form. 0/995 useless extension candidates. Maximal degree in co-relation 2338. Up to 903 conditions per place. [2024-02-20 12:22:06,336 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 2 changer transitions 1/48 dead transitions. [2024-02-20 12:22:06,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 293 flow [2024-02-20 12:22:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 12:22:06,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 12:22:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-02-20 12:22:06,340 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-20 12:22:06,341 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-02-20 12:22:06,341 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 48 transitions, 293 flow [2024-02-20 12:22:06,341 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 12:22:06,342 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:06,342 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] [2024-02-20 12:22:06,342 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:22:06,342 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 12:22:06,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:06,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1069321185, now seen corresponding path program 1 times [2024-02-20 12:22:06,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:06,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973407362] [2024-02-20 12:22:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:06,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:06,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:06,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973407362] [2024-02-20 12:22:06,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973407362] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:22:06,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:22:06,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 12:22:06,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601718902] [2024-02-20 12:22:06,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:06,428 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:22:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:22:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:22:06,439 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:22:06,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 48 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 12:22:06,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:06,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:22:06,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:06,671 INFO L124 PetriNetUnfolderBase]: 868/1257 cut-off events. [2024-02-20 12:22:06,671 INFO L125 PetriNetUnfolderBase]: For 1309/1357 co-relation queries the response was YES. [2024-02-20 12:22:06,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 1257 events. 868/1257 cut-off events. For 1309/1357 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5497 event pairs, 69 based on Foata normal form. 54/1301 useless extension candidates. Maximal degree in co-relation 3777. Up to 1061 conditions per place. [2024-02-20 12:22:06,686 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 58 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-02-20 12:22:06,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 536 flow [2024-02-20 12:22:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:22:06,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:22:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-02-20 12:22:06,691 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-02-20 12:22:06,693 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-02-20 12:22:06,693 INFO L507 AbstractCegarLoop]: Abstraction has has 44 places, 67 transitions, 536 flow [2024-02-20 12:22:06,693 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 12:22:06,694 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:06,694 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] [2024-02-20 12:22:06,694 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-20 12:22:06,694 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 12:22:06,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:06,695 INFO L85 PathProgramCache]: Analyzing trace with hash 721954181, now seen corresponding path program 1 times [2024-02-20 12:22:06,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:06,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180793191] [2024-02-20 12:22:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:06,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:06,815 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 12:22:06,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180793191] [2024-02-20 12:22:06,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180793191] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711193745] [2024-02-20 12:22:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:06,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:06,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:06,819 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 12:22:06,837 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 12:22:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:06,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-20 12:22:06,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:07,027 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 12:22:07,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:07,085 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 12:22:07,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711193745] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:07,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 12:22:07,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-02-20 12:22:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823976634] [2024-02-20 12:22:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:22:07,086 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 12:22:07,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 12:22:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-20 12:22:07,096 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:22:07,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 67 transitions, 536 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 12:22:07,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:07,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:22:07,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:07,235 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [24#L70-4true, 4#L47true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,235 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,235 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,235 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,235 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,236 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (<= v_~min2~0_48 .cse0) (= v_~min2~0_48 v_~min2~0_47)) (and (= v_~min2~0_47 .cse0) (< .cse0 v_~min2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_48} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_47} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,236 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,236 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,237 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,237 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,239 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (<= v_~min2~0_48 .cse0) (= v_~min2~0_48 v_~min2~0_47)) (and (= v_~min2~0_47 .cse0) (< .cse0 v_~min2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_48} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_47} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,239 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,239 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,239 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,240 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,240 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,240 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,240 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,240 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,240 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,243 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 31#L46-4true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,243 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,243 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,243 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,243 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-20 12:22:07,252 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,253 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is not cut-off event [2024-02-20 12:22:07,253 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-20 12:22:07,253 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-20 12:22:07,253 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-20 12:22:07,253 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (<= v_~min2~0_48 .cse0) (= v_~min2~0_48 v_~min2~0_47)) (and (= v_~min2~0_47 .cse0) (< .cse0 v_~min2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_48} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_47} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [24#L70-4true, 4#L47true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,254 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,254 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,254 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,254 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,254 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (<= v_~min2~0_48 .cse0) (= v_~min2~0_48 v_~min2~0_47)) (and (= v_~min2~0_47 .cse0) (< .cse0 v_~min2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_48} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_47} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,254 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,255 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,255 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,255 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,255 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-20 12:22:07,255 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([434] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,255 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,255 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,256 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,256 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,256 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,260 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([435] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_63) (+ v_~A~0.offset_63 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (<= v_~min2~0_48 .cse0) (= v_~min2~0_48 v_~min2~0_47)) (and (= v_~min2~0_47 .cse0) (< .cse0 v_~min2~0_48)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_48} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_63, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_63, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_47} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 47#true, 31#L46-4true, 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-20 12:22:07,260 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,260 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,260 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,260 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-20 12:22:07,330 INFO L124 PetriNetUnfolderBase]: 1130/1607 cut-off events. [2024-02-20 12:22:07,330 INFO L125 PetriNetUnfolderBase]: For 4245/4348 co-relation queries the response was YES. [2024-02-20 12:22:07,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 1607 events. 1130/1607 cut-off events. For 4245/4348 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7003 event pairs, 102 based on Foata normal form. 125/1704 useless extension candidates. Maximal degree in co-relation 6829. Up to 1276 conditions per place. [2024-02-20 12:22:07,345 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 72 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-02-20 12:22:07,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 822 flow [2024-02-20 12:22:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 12:22:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 12:22:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-02-20 12:22:07,346 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-02-20 12:22:07,347 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-02-20 12:22:07,347 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 84 transitions, 822 flow [2024-02-20 12:22:07,347 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 12:22:07,347 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:07,348 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] [2024-02-20 12:22:07,372 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 12:22:07,560 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:07,561 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 12:22:07,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash 676449730, now seen corresponding path program 1 times [2024-02-20 12:22:07,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783408517] [2024-02-20 12:22:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:08,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783408517] [2024-02-20 12:22:08,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783408517] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:08,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301443886] [2024-02-20 12:22:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:08,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:08,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:08,129 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 12:22:08,150 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 12:22:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:08,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 12:22:08,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:08,282 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 12:22:08,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 59 treesize of output 35 [2024-02-20 12:22:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:08,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:09,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 93 treesize of output 85 [2024-02-20 12:22:09,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:09,500 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 111 [2024-02-20 12:22:09,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 105 [2024-02-20 12:22:09,876 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-02-20 12:22:09,876 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 1 [2024-02-20 12:22:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:09,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301443886] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:09,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:09,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2024-02-20 12:22:09,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107407155] [2024-02-20 12:22:09,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:09,915 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:22:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:09,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:22:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:22:10,057 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:22:10,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 84 transitions, 822 flow. Second operand has 19 states, 19 states have (on average 10.842105263157896) internal successors, (206), 19 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:10,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:10,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:22:10,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:10,946 INFO L124 PetriNetUnfolderBase]: 1689/2443 cut-off events. [2024-02-20 12:22:10,946 INFO L125 PetriNetUnfolderBase]: For 6943/7039 co-relation queries the response was YES. [2024-02-20 12:22:10,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12931 conditions, 2443 events. 1689/2443 cut-off events. For 6943/7039 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11265 event pairs, 115 based on Foata normal form. 25/2434 useless extension candidates. Maximal degree in co-relation 10146. Up to 1934 conditions per place. [2024-02-20 12:22:10,981 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 169 selfloop transitions, 65 changer transitions 1/242 dead transitions. [2024-02-20 12:22:10,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 242 transitions, 2902 flow [2024-02-20 12:22:10,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-20 12:22:10,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-20 12:22:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 255 transitions. [2024-02-20 12:22:10,986 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-02-20 12:22:10,988 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2024-02-20 12:22:10,989 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 242 transitions, 2902 flow [2024-02-20 12:22:10,989 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.842105263157896) internal successors, (206), 19 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:22:10,989 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:10,989 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] [2024-02-20 12:22:11,009 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 12:22:11,204 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:11,205 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 12:22:11,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash -229890622, now seen corresponding path program 2 times [2024-02-20 12:22:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:11,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295431070] [2024-02-20 12:22:11,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:11,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:11,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295431070] [2024-02-20 12:22:11,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295431070] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:11,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416276793] [2024-02-20 12:22:11,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:22:11,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:11,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:11,761 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 12:22:11,769 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 12:22:11,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:22:11,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:11,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 12:22:11,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:11,885 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 12:22:12,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 58 treesize of output 34 [2024-02-20 12:22:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:12,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:12,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 69 treesize of output 61 [2024-02-20 12:22:13,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:13,004 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 83 treesize of output 79 [2024-02-20 12:22:13,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 47 [2024-02-20 12:22:13,165 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 12:22:13,166 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 64 treesize of output 1 [2024-02-20 12:22:13,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 66 treesize of output 58 [2024-02-20 12:22:13,177 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 12:22:13,178 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 100 treesize of output 1 [2024-02-20 12:22:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:13,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416276793] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:13,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-02-20 12:22:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905428414] [2024-02-20 12:22:13,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:13,219 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-20 12:22:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:13,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-20 12:22:13,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-02-20 12:22:13,421 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-20 12:22:13,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 242 transitions, 2902 flow. Second operand has 22 states, 22 states have (on average 10.0) internal successors, (220), 22 states have internal predecessors, (220), 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 12:22:13,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:13,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-20 12:22:13,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:15,054 INFO L124 PetriNetUnfolderBase]: 2287/3307 cut-off events. [2024-02-20 12:22:15,054 INFO L125 PetriNetUnfolderBase]: For 10215/10317 co-relation queries the response was YES. [2024-02-20 12:22:15,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20660 conditions, 3307 events. 2287/3307 cut-off events. For 10215/10317 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16194 event pairs, 107 based on Foata normal form. 9/3292 useless extension candidates. Maximal degree in co-relation 15961. Up to 2648 conditions per place. [2024-02-20 12:22:15,099 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 277 selfloop transitions, 113 changer transitions 2/397 dead transitions. [2024-02-20 12:22:15,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 397 transitions, 5476 flow [2024-02-20 12:22:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 12:22:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 12:22:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 333 transitions. [2024-02-20 12:22:15,102 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4530612244897959 [2024-02-20 12:22:15,102 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-02-20 12:22:15,103 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 397 transitions, 5476 flow [2024-02-20 12:22:15,103 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.0) internal successors, (220), 22 states have internal predecessors, (220), 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 12:22:15,103 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:15,103 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] [2024-02-20 12:22:15,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:15,316 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:15,317 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 12:22:15,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:15,317 INFO L85 PathProgramCache]: Analyzing trace with hash 794514740, now seen corresponding path program 3 times [2024-02-20 12:22:15,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:15,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475051365] [2024-02-20 12:22:15,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:15,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:15,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:15,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475051365] [2024-02-20 12:22:15,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475051365] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:15,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186232477] [2024-02-20 12:22:15,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:22:15,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:15,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:15,813 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 12:22:15,838 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 12:22:15,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:22:15,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:15,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-20 12:22:15,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:15,941 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 12:22:16,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 59 treesize of output 35 [2024-02-20 12:22:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:16,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:17,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 117 treesize of output 105 [2024-02-20 12:22:17,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:17,098 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 149 [2024-02-20 12:22:17,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 93 treesize of output 85 [2024-02-20 12:22:17,834 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-20 12:22:17,834 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 103 [2024-02-20 12:22:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186232477] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:18,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:18,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2024-02-20 12:22:18,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355844423] [2024-02-20 12:22:18,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:18,176 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-20 12:22:18,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-20 12:22:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2024-02-20 12:22:18,335 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-20 12:22:18,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 397 transitions, 5476 flow. Second operand has 23 states, 23 states have (on average 10.043478260869565) internal successors, (231), 23 states have internal predecessors, (231), 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 12:22:18,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:18,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-20 12:22:18,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:20,055 INFO L124 PetriNetUnfolderBase]: 3055/4422 cut-off events. [2024-02-20 12:22:20,056 INFO L125 PetriNetUnfolderBase]: For 16894/17042 co-relation queries the response was YES. [2024-02-20 12:22:20,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31945 conditions, 4422 events. 3055/4422 cut-off events. For 16894/17042 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23089 event pairs, 123 based on Foata normal form. 5/4401 useless extension candidates. Maximal degree in co-relation 26080. Up to 3609 conditions per place. [2024-02-20 12:22:20,115 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 474 selfloop transitions, 122 changer transitions 5/606 dead transitions. [2024-02-20 12:22:20,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 606 transitions, 9585 flow [2024-02-20 12:22:20,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 12:22:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 12:22:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 312 transitions. [2024-02-20 12:22:20,118 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4691729323308271 [2024-02-20 12:22:20,118 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-02-20 12:22:20,118 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 606 transitions, 9585 flow [2024-02-20 12:22:20,119 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.043478260869565) internal successors, (231), 23 states have internal predecessors, (231), 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 12:22:20,119 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:20,119 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] [2024-02-20 12:22:20,138 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 12:22:20,332 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:20,332 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 12:22:20,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:20,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1919841124, now seen corresponding path program 4 times [2024-02-20 12:22:20,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:20,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079369385] [2024-02-20 12:22:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:20,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:20,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:20,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:20,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079369385] [2024-02-20 12:22:20,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079369385] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:20,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054036773] [2024-02-20 12:22:20,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:22:20,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:20,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:20,856 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 12:22:20,874 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 12:22:20,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:22:20,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:20,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-20 12:22:20,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:20,984 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 12:22:21,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 59 treesize of output 35 [2024-02-20 12:22:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:21,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:21,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 69 treesize of output 61 [2024-02-20 12:22:21,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:22:21,896 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 83 treesize of output 79 [2024-02-20 12:22:22,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 66 treesize of output 58 [2024-02-20 12:22:22,040 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 12:22:22,040 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 100 treesize of output 1 [2024-02-20 12:22:22,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 53 treesize of output 47 [2024-02-20 12:22:22,051 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-02-20 12:22:22,052 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 64 treesize of output 1 [2024-02-20 12:22:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:22,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054036773] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:22,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:22,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-02-20 12:22:22,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708790291] [2024-02-20 12:22:22,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:22,078 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-02-20 12:22:22,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-02-20 12:22:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2024-02-20 12:22:22,219 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-20 12:22:22,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 606 transitions, 9585 flow. Second operand has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 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 12:22:22,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:22,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-20 12:22:22,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:24,239 INFO L124 PetriNetUnfolderBase]: 3449/4984 cut-off events. [2024-02-20 12:22:24,239 INFO L125 PetriNetUnfolderBase]: For 23419/23541 co-relation queries the response was YES. [2024-02-20 12:22:24,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40813 conditions, 4984 events. 3449/4984 cut-off events. For 23419/23541 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26383 event pairs, 135 based on Foata normal form. 10/4974 useless extension candidates. Maximal degree in co-relation 33067. Up to 4103 conditions per place. [2024-02-20 12:22:24,305 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 493 selfloop transitions, 234 changer transitions 7/739 dead transitions. [2024-02-20 12:22:24,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 739 transitions, 13161 flow [2024-02-20 12:22:24,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-20 12:22:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-20 12:22:24,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 364 transitions. [2024-02-20 12:22:24,308 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45217391304347826 [2024-02-20 12:22:24,309 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 85 predicate places. [2024-02-20 12:22:24,309 INFO L507 AbstractCegarLoop]: Abstraction has has 122 places, 739 transitions, 13161 flow [2024-02-20 12:22:24,309 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 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 12:22:24,309 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:24,310 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] [2024-02-20 12:22:24,328 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 12:22:24,524 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:24,524 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 12:22:24,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1528974930, now seen corresponding path program 5 times [2024-02-20 12:22:24,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:24,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399273483] [2024-02-20 12:22:24,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:24,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:25,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399273483] [2024-02-20 12:22:25,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399273483] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069404851] [2024-02-20 12:22:25,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:22:25,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:25,051 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 12:22:25,072 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 12:22:25,151 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:22:25,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:25,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 26 conjunts are in the unsatisfiable core [2024-02-20 12:22:25,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:25,179 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 12:22:25,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 59 treesize of output 35 [2024-02-20 12:22:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:25,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:26,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 45 treesize of output 39 [2024-02-20 12:22:26,800 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 56 treesize of output 50 [2024-02-20 12:22:26,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 65 treesize of output 57 [2024-02-20 12:22:26,813 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 79 treesize of output 71 [2024-02-20 12:22:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:22:26,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069404851] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:26,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:26,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2024-02-20 12:22:26,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859990330] [2024-02-20 12:22:26,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:26,847 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-20 12:22:26,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-20 12:22:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-02-20 12:22:26,901 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:22:26,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 739 transitions, 13161 flow. Second operand has 29 states, 29 states have (on average 8.551724137931034) internal successors, (248), 29 states have internal predecessors, (248), 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 12:22:26,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:26,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:22:26,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:30,500 INFO L124 PetriNetUnfolderBase]: 5015/7228 cut-off events. [2024-02-20 12:22:30,500 INFO L125 PetriNetUnfolderBase]: For 41190/41391 co-relation queries the response was YES. [2024-02-20 12:22:30,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65772 conditions, 7228 events. 5015/7228 cut-off events. For 41190/41391 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 40131 event pairs, 84 based on Foata normal form. 10/7228 useless extension candidates. Maximal degree in co-relation 49404. Up to 5864 conditions per place. [2024-02-20 12:22:30,591 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 870 selfloop transitions, 335 changer transitions 10/1218 dead transitions. [2024-02-20 12:22:30,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1218 transitions, 23742 flow [2024-02-20 12:22:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-20 12:22:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-20 12:22:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 544 transitions. [2024-02-20 12:22:30,594 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40902255639097745 [2024-02-20 12:22:30,595 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 122 predicate places. [2024-02-20 12:22:30,595 INFO L507 AbstractCegarLoop]: Abstraction has has 159 places, 1218 transitions, 23742 flow [2024-02-20 12:22:30,595 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.551724137931034) internal successors, (248), 29 states have internal predecessors, (248), 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 12:22:30,596 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:30,596 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] [2024-02-20 12:22:30,613 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 12:22:30,811 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:30,811 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 12:22:30,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash -531370591, now seen corresponding path program 6 times [2024-02-20 12:22:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:30,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284261296] [2024-02-20 12:22:30,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:30,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:30,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284261296] [2024-02-20 12:22:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284261296] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:30,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629800222] [2024-02-20 12:22:30,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:22:30,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:30,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:30,916 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 12:22:30,919 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 12:22:31,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:22:31,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:31,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:22:31,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:31,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:31,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:31,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629800222] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:31,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:31,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-02-20 12:22:31,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997090641] [2024-02-20 12:22:31,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:31,215 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:22:31,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:31,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:22:31,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:22:31,234 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:22:31,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 1218 transitions, 23742 flow. Second operand has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 19 states have internal predecessors, (142), 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 12:22:31,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:31,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:22:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:35,252 INFO L124 PetriNetUnfolderBase]: 12419/17784 cut-off events. [2024-02-20 12:22:35,252 INFO L125 PetriNetUnfolderBase]: For 102010/102010 co-relation queries the response was YES. [2024-02-20 12:22:35,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159792 conditions, 17784 events. 12419/17784 cut-off events. For 102010/102010 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 100473 event pairs, 563 based on Foata normal form. 242/18024 useless extension candidates. Maximal degree in co-relation 91484. Up to 12123 conditions per place. [2024-02-20 12:22:35,624 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1860 selfloop transitions, 484 changer transitions 9/2354 dead transitions. [2024-02-20 12:22:35,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 2354 transitions, 48590 flow [2024-02-20 12:22:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-20 12:22:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-20 12:22:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 478 transitions. [2024-02-20 12:22:35,629 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42678571428571427 [2024-02-20 12:22:35,630 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 151 predicate places. [2024-02-20 12:22:35,630 INFO L507 AbstractCegarLoop]: Abstraction has has 188 places, 2354 transitions, 48590 flow [2024-02-20 12:22:35,630 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.473684210526316) internal successors, (142), 19 states have internal predecessors, (142), 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 12:22:35,630 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:35,631 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] [2024-02-20 12:22:35,648 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 12:22:35,846 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:35,847 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 12:22:35,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash 885073774, now seen corresponding path program 1 times [2024-02-20 12:22:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:35,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293522224] [2024-02-20 12:22:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:35,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:35,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:35,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293522224] [2024-02-20 12:22:35,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293522224] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:35,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125054048] [2024-02-20 12:22:35,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:35,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:35,964 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 12:22:35,989 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 12:22:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:36,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:22:36,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:36,105 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:36,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125054048] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:36,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:36,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-02-20 12:22:36,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293749813] [2024-02-20 12:22:36,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:36,143 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-20 12:22:36,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-20 12:22:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-02-20 12:22:36,189 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:22:36,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 2354 transitions, 48590 flow. Second operand has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 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 12:22:36,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:36,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:22:36,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:40,274 INFO L124 PetriNetUnfolderBase]: 9538/13995 cut-off events. [2024-02-20 12:22:40,275 INFO L125 PetriNetUnfolderBase]: For 126509/126509 co-relation queries the response was YES. [2024-02-20 12:22:40,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138638 conditions, 13995 events. 9538/13995 cut-off events. For 126509/126509 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 80525 event pairs, 141 based on Foata normal form. 708/14701 useless extension candidates. Maximal degree in co-relation 69734. Up to 9668 conditions per place. [2024-02-20 12:22:40,443 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 2189 selfloop transitions, 195 changer transitions 11/2727 dead transitions. [2024-02-20 12:22:40,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 2727 transitions, 61838 flow [2024-02-20 12:22:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 12:22:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 12:22:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-02-20 12:22:40,444 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2024-02-20 12:22:40,446 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 156 predicate places. [2024-02-20 12:22:40,446 INFO L507 AbstractCegarLoop]: Abstraction has has 193 places, 2727 transitions, 61838 flow [2024-02-20 12:22:40,446 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.153846153846153) internal successors, (145), 13 states have internal predecessors, (145), 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 12:22:40,446 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:40,447 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] [2024-02-20 12:22:40,466 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 12:22:40,663 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,SelfDestructingSolverStorable10 [2024-02-20 12:22:40,664 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 12:22:40,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1294085503, now seen corresponding path program 7 times [2024-02-20 12:22:40,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966363330] [2024-02-20 12:22:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:40,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:40,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966363330] [2024-02-20 12:22:40,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966363330] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:40,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696722374] [2024-02-20 12:22:40,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:22:40,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:40,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:40,765 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 12:22:40,775 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 12:22:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:40,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:22:40,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:40,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:40,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696722374] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:40,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 12:22:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246869839] [2024-02-20 12:22:40,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:40,991 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:22:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:22:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:22:41,013 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:22:41,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 2727 transitions, 61838 flow. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 12:22:41,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:41,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:22:41,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:45,369 INFO L124 PetriNetUnfolderBase]: 8214/12171 cut-off events. [2024-02-20 12:22:45,370 INFO L125 PetriNetUnfolderBase]: For 128939/128939 co-relation queries the response was YES. [2024-02-20 12:22:45,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131077 conditions, 12171 events. 8214/12171 cut-off events. For 128939/128939 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 69503 event pairs, 125 based on Foata normal form. 284/12453 useless extension candidates. Maximal degree in co-relation 75294. Up to 8512 conditions per place. [2024-02-20 12:22:45,469 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 2040 selfloop transitions, 150 changer transitions 86/2457 dead transitions. [2024-02-20 12:22:45,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 2457 transitions, 60278 flow [2024-02-20 12:22:45,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:22:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:22:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-02-20 12:22:45,470 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-02-20 12:22:45,470 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 161 predicate places. [2024-02-20 12:22:45,471 INFO L507 AbstractCegarLoop]: Abstraction has has 198 places, 2457 transitions, 60278 flow [2024-02-20 12:22:45,471 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 14 states have internal predecessors, (154), 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 12:22:45,471 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:45,471 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] [2024-02-20 12:22:45,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 12:22:45,672 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:45,673 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 12:22:45,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:45,673 INFO L85 PathProgramCache]: Analyzing trace with hash -757929211, now seen corresponding path program 8 times [2024-02-20 12:22:45,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:45,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005605418] [2024-02-20 12:22:45,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:45,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:45,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005605418] [2024-02-20 12:22:45,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005605418] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:45,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592329008] [2024-02-20 12:22:45,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:22:45,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:45,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:45,786 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 12:22:45,789 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 12:22:45,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:22:45,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:45,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 12:22:45,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:46,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:46,068 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:22:46,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592329008] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:46,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:46,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-20 12:22:46,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933648416] [2024-02-20 12:22:46,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:46,070 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 12:22:46,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 12:22:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-02-20 12:22:46,096 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-20 12:22:46,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 2457 transitions, 60278 flow. Second operand has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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 12:22:46,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:46,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-20 12:22:46,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:49,491 INFO L124 PetriNetUnfolderBase]: 7016/10482 cut-off events. [2024-02-20 12:22:49,491 INFO L125 PetriNetUnfolderBase]: For 127591/127591 co-relation queries the response was YES. [2024-02-20 12:22:49,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121600 conditions, 10482 events. 7016/10482 cut-off events. For 127591/127591 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 59233 event pairs, 115 based on Foata normal form. 288/10768 useless extension candidates. Maximal degree in co-relation 80924. Up to 7394 conditions per place. [2024-02-20 12:22:49,578 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 984 selfloop transitions, 3 changer transitions 1136/2258 dead transitions. [2024-02-20 12:22:49,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 2258 transitions, 59735 flow [2024-02-20 12:22:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:22:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:22:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-02-20 12:22:49,581 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-02-20 12:22:49,581 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 167 predicate places. [2024-02-20 12:22:49,581 INFO L507 AbstractCegarLoop]: Abstraction has has 204 places, 2258 transitions, 59735 flow [2024-02-20 12:22:49,582 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.714285714285714) internal successors, (164), 14 states have internal predecessors, (164), 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 12:22:49,582 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:49,582 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:22:49,596 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 12:22:49,783 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,SelfDestructingSolverStorable12 [2024-02-20 12:22:49,783 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 12:22:49,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:49,784 INFO L85 PathProgramCache]: Analyzing trace with hash 861804762, now seen corresponding path program 9 times [2024-02-20 12:22:49,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:49,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809847622] [2024-02-20 12:22:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:49,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809847622] [2024-02-20 12:22:49,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809847622] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128854719] [2024-02-20 12:22:49,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:22:49,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:49,930 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 12:22:49,950 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 12:22:50,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-02-20 12:22:50,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:50,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:22:50,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:50,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-20 12:22:50,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128854719] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:50,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:50,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-20 12:22:50,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729028424] [2024-02-20 12:22:50,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:50,216 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:22:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:50,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:22:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:22:50,246 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:22:50,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 2258 transitions, 59735 flow. Second operand has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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 12:22:50,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:50,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:22:50,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:22:55,795 INFO L124 PetriNetUnfolderBase]: 9955/14675 cut-off events. [2024-02-20 12:22:55,795 INFO L125 PetriNetUnfolderBase]: For 188882/188882 co-relation queries the response was YES. [2024-02-20 12:22:55,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185229 conditions, 14675 events. 9955/14675 cut-off events. For 188882/188882 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 82139 event pairs, 109 based on Foata normal form. 32/14705 useless extension candidates. Maximal degree in co-relation 140570. Up to 10633 conditions per place. [2024-02-20 12:22:55,939 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 1646 selfloop transitions, 400 changer transitions 1136/3299 dead transitions. [2024-02-20 12:22:55,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 3299 transitions, 93555 flow [2024-02-20 12:22:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-20 12:22:55,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-20 12:22:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 279 transitions. [2024-02-20 12:22:55,941 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4689075630252101 [2024-02-20 12:22:55,941 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 183 predicate places. [2024-02-20 12:22:55,942 INFO L507 AbstractCegarLoop]: Abstraction has has 220 places, 3299 transitions, 93555 flow [2024-02-20 12:22:55,942 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 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 12:22:55,942 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:22:55,942 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:22:55,962 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 12:22:56,156 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,SelfDestructingSolverStorable13 [2024-02-20 12:22:56,156 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 12:22:56,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:22:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2121784016, now seen corresponding path program 10 times [2024-02-20 12:22:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:22:56,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880166900] [2024-02-20 12:22:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:22:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:22:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:22:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:22:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:22:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880166900] [2024-02-20 12:22:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880166900] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:22:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541879419] [2024-02-20 12:22:56,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:22:56,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:22:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:22:56,289 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 12:22:56,314 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 12:22:56,383 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:22:56,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:22:56,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:22:56,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:22:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:22:56,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:22:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:22:56,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541879419] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:22:56,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:22:56,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-02-20 12:22:56,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982880065] [2024-02-20 12:22:56,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:22:56,566 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 12:22:56,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:22:56,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 12:22:56,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-02-20 12:22:56,608 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:22:56,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 3299 transitions, 93555 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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 12:22:56,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:22:56,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:22:56,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:09,765 INFO L124 PetriNetUnfolderBase]: 14460/21052 cut-off events. [2024-02-20 12:23:09,765 INFO L125 PetriNetUnfolderBase]: For 274412/274412 co-relation queries the response was YES. [2024-02-20 12:23:09,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292038 conditions, 21052 events. 14460/21052 cut-off events. For 274412/274412 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 121154 event pairs, 81 based on Foata normal form. 34/21084 useless extension candidates. Maximal degree in co-relation 243588. Up to 15842 conditions per place. [2024-02-20 12:23:10,051 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 2638 selfloop transitions, 1187 changer transitions 1143/4969 dead transitions. [2024-02-20 12:23:10,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 4969 transitions, 149301 flow [2024-02-20 12:23:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-02-20 12:23:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-02-20 12:23:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 681 transitions. [2024-02-20 12:23:10,054 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39708454810495625 [2024-02-20 12:23:10,054 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 231 predicate places. [2024-02-20 12:23:10,054 INFO L507 AbstractCegarLoop]: Abstraction has has 268 places, 4969 transitions, 149301 flow [2024-02-20 12:23:10,054 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 states have internal predecessors, (124), 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 12:23:10,055 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:10,055 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:23:10,069 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 12:23:10,264 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,SelfDestructingSolverStorable14 [2024-02-20 12:23:10,265 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 12:23:10,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:10,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1985986364, now seen corresponding path program 11 times [2024-02-20 12:23:10,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:10,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881957199] [2024-02-20 12:23:10,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:10,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:23:10,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:10,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881957199] [2024-02-20 12:23:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881957199] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:10,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679946415] [2024-02-20 12:23:10,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:23:10,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:10,423 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 12:23:10,424 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 12:23:10,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:23:10,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:10,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:10,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:10,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679946415] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:10,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:10,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-20 12:23:10,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360559052] [2024-02-20 12:23:10,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:10,695 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:23:10,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:10,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:23:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:23:10,720 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:23:10,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 4969 transitions, 149301 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:23:10,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:10,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:23:10,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:23:36,493 INFO L124 PetriNetUnfolderBase]: 17882/25799 cut-off events. [2024-02-20 12:23:36,493 INFO L125 PetriNetUnfolderBase]: For 344710/344710 co-relation queries the response was YES. [2024-02-20 12:23:36,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385394 conditions, 25799 events. 17882/25799 cut-off events. For 344710/344710 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 150957 event pairs, 97 based on Foata normal form. 34/25831 useless extension candidates. Maximal degree in co-relation 333172. Up to 20110 conditions per place. [2024-02-20 12:23:36,819 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 3381 selfloop transitions, 1658 changer transitions 1143/6183 dead transitions. [2024-02-20 12:23:36,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 6183 transitions, 197497 flow [2024-02-20 12:23:36,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-02-20 12:23:36,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-02-20 12:23:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1047 transitions. [2024-02-20 12:23:36,823 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39360902255639096 [2024-02-20 12:23:36,824 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 306 predicate places. [2024-02-20 12:23:36,824 INFO L507 AbstractCegarLoop]: Abstraction has has 343 places, 6183 transitions, 197497 flow [2024-02-20 12:23:36,824 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:23:36,824 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:23:36,824 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:23:36,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 12:23:37,040 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,SelfDestructingSolverStorable15 [2024-02-20 12:23:37,041 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 12:23:37,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:23:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1730678668, now seen corresponding path program 12 times [2024-02-20 12:23:37,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:23:37,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166299561] [2024-02-20 12:23:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:23:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:23:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:23:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:23:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:23:37,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166299561] [2024-02-20 12:23:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166299561] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:23:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626914627] [2024-02-20 12:23:37,158 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:23:37,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:23:37,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:23:37,161 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 12:23:37,170 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 12:23:37,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:23:37,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:23:37,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:23:37,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:23:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:37,375 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:23:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:23:37,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626914627] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:23:37,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:23:37,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-02-20 12:23:37,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073789365] [2024-02-20 12:23:37,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:23:37,449 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:23:37,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:23:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:23:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:23:37,484 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:23:37,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 6183 transitions, 197497 flow. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:23:37,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:23:37,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:23:37,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:24:15,090 INFO L124 PetriNetUnfolderBase]: 19973/28837 cut-off events. [2024-02-20 12:24:15,091 INFO L125 PetriNetUnfolderBase]: For 399707/399707 co-relation queries the response was YES. [2024-02-20 12:24:15,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460091 conditions, 28837 events. 19973/28837 cut-off events. For 399707/399707 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 172168 event pairs, 99 based on Foata normal form. 32/28867 useless extension candidates. Maximal degree in co-relation 389621. Up to 22099 conditions per place. [2024-02-20 12:24:15,494 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 4007 selfloop transitions, 1599 changer transitions 1570/7177 dead transitions. [2024-02-20 12:24:15,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 7177 transitions, 243454 flow [2024-02-20 12:24:15,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-02-20 12:24:15,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-02-20 12:24:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 740 transitions. [2024-02-20 12:24:15,497 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2024-02-20 12:24:15,498 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 357 predicate places. [2024-02-20 12:24:15,498 INFO L507 AbstractCegarLoop]: Abstraction has has 394 places, 7177 transitions, 243454 flow [2024-02-20 12:24:15,498 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:24:15,498 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:24:15,498 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:24:15,514 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 12:24:15,707 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:15,708 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 12:24:15,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:24:15,708 INFO L85 PathProgramCache]: Analyzing trace with hash -358830750, now seen corresponding path program 13 times [2024-02-20 12:24:15,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:24:15,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8900422] [2024-02-20 12:24:15,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:24:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:24:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:15,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:24:15,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:24:15,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8900422] [2024-02-20 12:24:15,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8900422] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:24:15,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198135513] [2024-02-20 12:24:15,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:24:15,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:24:15,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:24:15,837 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 12:24:15,838 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 12:24:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:24:15,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:24:15,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:24:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:24:16,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:24:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:24:16,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198135513] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:24:16,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:24:16,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-20 12:24:16,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791295112] [2024-02-20 12:24:16,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:24:16,142 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:24:16,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:24:16,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:24:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:24:16,175 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:24:16,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 7177 transitions, 243454 flow. Second operand has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 19 states have internal predecessors, (158), 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 12:24:16,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:24:16,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:24:16,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:25:00,339 INFO L124 PetriNetUnfolderBase]: 20582/29732 cut-off events. [2024-02-20 12:25:00,339 INFO L125 PetriNetUnfolderBase]: For 443429/443429 co-relation queries the response was YES. [2024-02-20 12:25:00,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501734 conditions, 29732 events. 20582/29732 cut-off events. For 443429/443429 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 178703 event pairs, 101 based on Foata normal form. 34/29764 useless extension candidates. Maximal degree in co-relation 426934. Up to 22886 conditions per place. [2024-02-20 12:25:00,713 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 4268 selfloop transitions, 1161 changer transitions 1570/7428 dead transitions. [2024-02-20 12:25:00,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 7428 transitions, 266198 flow [2024-02-20 12:25:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-20 12:25:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-20 12:25:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 300 transitions. [2024-02-20 12:25:00,715 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-02-20 12:25:00,715 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 374 predicate places. [2024-02-20 12:25:00,716 INFO L507 AbstractCegarLoop]: Abstraction has has 411 places, 7428 transitions, 266198 flow [2024-02-20 12:25:00,716 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 19 states have internal predecessors, (158), 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 12:25:00,716 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:25:00,716 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:25:00,728 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 12:25:00,920 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,SelfDestructingSolverStorable17 [2024-02-20 12:25:00,920 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 12:25:00,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:25:00,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1268745134, now seen corresponding path program 14 times [2024-02-20 12:25:00,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:25:00,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165765060] [2024-02-20 12:25:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:25:00,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:25:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:25:01,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:25:01,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165765060] [2024-02-20 12:25:01,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165765060] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:25:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576137973] [2024-02-20 12:25:01,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:25:01,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:01,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:25:01,032 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 12:25:01,036 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 12:25:01,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:25:01,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:25:01,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:25:01,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:25:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:01,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:25:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:01,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576137973] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:25:01,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:25:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-20 12:25:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779976141] [2024-02-20 12:25:01,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:25:01,559 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-20 12:25:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:25:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-20 12:25:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-02-20 12:25:01,609 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:25:01,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 7428 transitions, 266198 flow. Second operand has 20 states, 20 states have (on average 8.35) internal successors, (167), 20 states have internal predecessors, (167), 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 12:25:01,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:25:01,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:25:01,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:25:56,770 INFO L124 PetriNetUnfolderBase]: 24694/35617 cut-off events. [2024-02-20 12:25:56,771 INFO L125 PetriNetUnfolderBase]: For 569176/569176 co-relation queries the response was YES. [2024-02-20 12:25:56,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633967 conditions, 35617 events. 24694/35617 cut-off events. For 569176/569176 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 218402 event pairs, 103 based on Foata normal form. 34/35649 useless extension candidates. Maximal degree in co-relation 553900. Up to 27974 conditions per place. [2024-02-20 12:25:57,294 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 5059 selfloop transitions, 1658 changer transitions 1570/8716 dead transitions. [2024-02-20 12:25:57,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 8716 transitions, 330054 flow [2024-02-20 12:25:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-02-20 12:25:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-02-20 12:25:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 560 transitions. [2024-02-20 12:25:57,296 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-02-20 12:25:57,297 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 406 predicate places. [2024-02-20 12:25:57,297 INFO L507 AbstractCegarLoop]: Abstraction has has 443 places, 8716 transitions, 330054 flow [2024-02-20 12:25:57,297 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.35) internal successors, (167), 20 states have internal predecessors, (167), 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 12:25:57,297 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:25:57,297 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:25:57,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 12:25:57,504 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:57,505 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 12:25:57,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:25:57,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1524052830, now seen corresponding path program 15 times [2024-02-20 12:25:57,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:25:57,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951338537] [2024-02-20 12:25:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:25:57,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:25:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:25:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:57,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:25:57,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951338537] [2024-02-20 12:25:57,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951338537] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:25:57,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286986411] [2024-02-20 12:25:57,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:25:57,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:25:57,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:25:57,632 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 12:25:57,633 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 12:25:57,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:25:57,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:25:57,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-20 12:25:57,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:25:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:57,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:25:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:25:57,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286986411] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:25:57,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:25:57,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-20 12:25:57,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503537850] [2024-02-20 12:25:57,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:25:57,951 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-20 12:25:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:25:57,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-20 12:25:57,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-02-20 12:25:57,996 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-20 12:25:58,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 8716 transitions, 330054 flow. Second operand has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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 12:25:58,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:25:58,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-20 12:25:58,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:27:18,696 INFO L124 PetriNetUnfolderBase]: 30887/44355 cut-off events. [2024-02-20 12:27:18,696 INFO L125 PetriNetUnfolderBase]: For 740971/740971 co-relation queries the response was YES. [2024-02-20 12:27:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829643 conditions, 44355 events. 30887/44355 cut-off events. For 740971/740971 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 275476 event pairs, 107 based on Foata normal form. 32/44385 useless extension candidates. Maximal degree in co-relation 742698. Up to 35311 conditions per place. [2024-02-20 12:27:19,533 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 6221 selfloop transitions, 1702 changer transitions 1570/9922 dead transitions. [2024-02-20 12:27:19,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 9922 transitions, 395446 flow [2024-02-20 12:27:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 12:27:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 12:27:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 465 transitions. [2024-02-20 12:27:19,535 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-02-20 12:27:19,536 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 432 predicate places. [2024-02-20 12:27:19,536 INFO L507 AbstractCegarLoop]: Abstraction has has 469 places, 9922 transitions, 395446 flow [2024-02-20 12:27:19,536 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.19047619047619) internal successors, (172), 21 states have internal predecessors, (172), 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 12:27:19,536 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:27:19,536 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:27:19,550 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 12:27:19,744 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:27:19,744 INFO L432 AbstractCegarLoop]: === Iteration 21 === 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 12:27:19,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:27:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -126764400, now seen corresponding path program 16 times [2024-02-20 12:27:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:27:19,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369180322] [2024-02-20 12:27:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:27:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:27:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:27:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:27:19,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:27:19,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369180322] [2024-02-20 12:27:19,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369180322] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:27:19,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281767092] [2024-02-20 12:27:19,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:27:19,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:27:19,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:27:19,865 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 12:27:19,866 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 12:27:19,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:27:19,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:27:19,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:27:19,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:27:20,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:27:20,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:27:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:27:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281767092] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:27:20,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:27:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-02-20 12:27:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324009430] [2024-02-20 12:27:20,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:27:20,126 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-20 12:27:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:27:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-20 12:27:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-02-20 12:27:20,153 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:27:20,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 9922 transitions, 395446 flow. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:27:20,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:27:20,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:27:20,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:30:10,058 INFO L124 PetriNetUnfolderBase]: 39853/56810 cut-off events. [2024-02-20 12:30:10,058 INFO L125 PetriNetUnfolderBase]: For 873338/873338 co-relation queries the response was YES. [2024-02-20 12:30:10,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120292 conditions, 56810 events. 39853/56810 cut-off events. For 873338/873338 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 356205 event pairs, 111 based on Foata normal form. 32/56840 useless extension candidates. Maximal degree in co-relation 1025539. Up to 46071 conditions per place. [2024-02-20 12:30:11,434 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 7245 selfloop transitions, 3361 changer transitions 1570/12177 dead transitions. [2024-02-20 12:30:11,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 12177 transitions, 502998 flow [2024-02-20 12:30:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-02-20 12:30:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2024-02-20 12:30:11,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 1683 transitions. [2024-02-20 12:30:11,439 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3974025974025974 [2024-02-20 12:30:11,440 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 552 predicate places. [2024-02-20 12:30:11,440 INFO L507 AbstractCegarLoop]: Abstraction has has 589 places, 12177 transitions, 502998 flow [2024-02-20 12:30:11,440 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 12:30:11,440 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:30:11,441 INFO L234 CegarLoopForPetriNet]: trace histogram [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] [2024-02-20 12:30:11,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-02-20 12:30:11,656 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:30:11,656 INFO L432 AbstractCegarLoop]: === Iteration 22 === 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 12:30:11,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:30:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash 128543296, now seen corresponding path program 17 times [2024-02-20 12:30:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:30:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120252301] [2024-02-20 12:30:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:30:11,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:30:11,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:30:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-20 12:30:11,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:30:11,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120252301] [2024-02-20 12:30:11,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120252301] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:30:11,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588331232] [2024-02-20 12:30:11,766 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:30:11,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:30:11,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:30:11,769 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:30:11,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 12:30:11,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:30:11,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:30:11,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 12:30:11,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:30:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:30:11,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:30:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 12:30:12,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588331232] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:30:12,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:30:12,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-20 12:30:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691141975] [2024-02-20 12:30:12,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:30:12,055 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-20 12:30:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:30:12,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-20 12:30:12,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-02-20 12:30:12,084 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-20 12:30:12,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 12177 transitions, 502998 flow. Second operand has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:30:12,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:30:12,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-20 12:30:12,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:34:41,834 INFO L124 PetriNetUnfolderBase]: 45192/64176 cut-off events. [2024-02-20 12:34:41,834 INFO L125 PetriNetUnfolderBase]: For 978865/978865 co-relation queries the response was YES. [2024-02-20 12:34:42,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329304 conditions, 64176 events. 45192/64176 cut-off events. For 978865/978865 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 405385 event pairs, 107 based on Foata normal form. 34/64208 useless extension candidates. Maximal degree in co-relation 1227914. Up to 52436 conditions per place. [2024-02-20 12:34:43,275 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 8656 selfloop transitions, 3403 changer transitions 1570/13630 dead transitions. [2024-02-20 12:34:43,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 13630 transitions, 588439 flow [2024-02-20 12:34:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-02-20 12:34:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2024-02-20 12:34:43,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 1422 transitions. [2024-02-20 12:34:43,279 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39445214979195564 [2024-02-20 12:34:43,279 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 654 predicate places. [2024-02-20 12:34:43,279 INFO L507 AbstractCegarLoop]: Abstraction has has 691 places, 13630 transitions, 588439 flow [2024-02-20 12:34:43,280 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.166666666666667) internal successors, (129), 18 states have internal predecessors, (129), 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 12:34:43,280 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:34:43,280 INFO L234 CegarLoopForPetriNet]: trace histogram [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, 1, 1] [2024-02-20 12:34:43,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-20 12:34:43,500 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:43,500 INFO L432 AbstractCegarLoop]: === Iteration 23 === 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 12:34:43,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:34:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2110812542, now seen corresponding path program 2 times [2024-02-20 12:34:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:34:43,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121166216] [2024-02-20 12:34:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:34:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:34:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:34:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:44,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:34:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121166216] [2024-02-20 12:34:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121166216] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:34:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944029953] [2024-02-20 12:34:44,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:34:44,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:34:44,962 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:34:44,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 12:34:45,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:34:45,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:34:45,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2024-02-20 12:34:45,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:34:45,176 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 12:34:46,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:34:46,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 101 [2024-02-20 12:34:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:46,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:34:52,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 466 treesize of output 416 [2024-02-20 12:34:53,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 12:34:53,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 679 treesize of output 807 [2024-02-20 12:34:55,774 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:35:08,107 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:35:15,561 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:35:20,073 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-02-20 12:35:24,428 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. Killed by 15