./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.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 ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 15:02:17,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 15:02:17,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 15:02:17,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 15:02:17,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 15:02:17,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 15:02:17,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 15:02:17,671 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 15:02:17,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 15:02:17,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 15:02:17,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 15:02:17,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 15:02:17,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 15:02:17,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 15:02:17,676 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 15:02:17,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 15:02:17,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 15:02:17,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 15:02:17,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 15:02:17,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 15:02:17,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 15:02:17,678 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 15:02:17,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 15:02:17,679 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 15:02:17,679 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 15:02:17,679 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 15:02:17,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 15:02:17,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 15:02:17,680 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 15:02:17,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 15:02:17,681 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 15:02:17,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 15:02:17,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:02:17,682 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 15:02:17,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 15:02:17,682 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 15:02:17,683 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 15:02:17,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 15:02:17,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 15:02:17,683 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 15:02:17,683 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 15:02:17,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 15:02:17,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 15:02:17,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ceb4cfb737a49cea9ea1be451c16ebb29f48ae611a8c94fc546ca2e3471f0eb3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 15:02:17,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 15:02:17,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 15:02:17,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 15:02:17,955 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 15:02:17,956 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 15:02:17,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2024-02-19 15:02:19,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 15:02:19,225 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 15:02:19,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2024-02-19 15:02:19,236 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5319011/0785022fb5b046b59044a2e86def0644/FLAG1707185dc [2024-02-19 15:02:19,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5319011/0785022fb5b046b59044a2e86def0644 [2024-02-19 15:02:19,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 15:02:19,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 15:02:19,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 15:02:19,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 15:02:19,258 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 15:02:19,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f07846d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19, skipping insertion in model container [2024-02-19 15:02:19,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 15:02:19,431 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-hom.wvr.c[2586,2599] [2024-02-19 15:02:19,441 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:02:19,450 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 15:02:19,479 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-hom.wvr.c[2586,2599] [2024-02-19 15:02:19,482 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 15:02:19,493 INFO L206 MainTranslator]: Completed translation [2024-02-19 15:02:19,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19 WrapperNode [2024-02-19 15:02:19,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 15:02:19,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 15:02:19,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 15:02:19,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 15:02:19,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,537 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2024-02-19 15:02:19,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 15:02:19,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 15:02:19,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 15:02:19,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 15:02:19,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,558 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,577 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]. [2024-02-19 15:02:19,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,588 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,591 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,593 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,594 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 15:02:19,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 15:02:19,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 15:02:19,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 15:02:19,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (1/1) ... [2024-02-19 15:02:19,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 15:02:19,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:19,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 15:02:19,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 15:02:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 15:02:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 15:02:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 15:02:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 15:02:19,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 15:02:19,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 15:02:19,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 15:02:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 15:02:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 15:02:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 15:02:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 15:02:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 15:02:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 15:02:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 15:02:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 15:02:19,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 15:02:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 15:02:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 15:02:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-19 15:02:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-19 15:02:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 15:02:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 15:02:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 15:02:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 15:02:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 15:02:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 15:02:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 15:02:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 15:02:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 15:02:19,696 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 15:02:19,806 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 15:02:19,808 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 15:02:20,019 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 15:02:20,019 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 15:02:20,199 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 15:02:20,200 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-02-19 15:02:20,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:02:20 BoogieIcfgContainer [2024-02-19 15:02:20,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 15:02:20,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 15:02:20,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 15:02:20,204 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 15:02:20,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 03:02:19" (1/3) ... [2024-02-19 15:02:20,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5729f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:02:20, skipping insertion in model container [2024-02-19 15:02:20,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 03:02:19" (2/3) ... [2024-02-19 15:02:20,205 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5729f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 03:02:20, skipping insertion in model container [2024-02-19 15:02:20,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 03:02:20" (3/3) ... [2024-02-19 15:02:20,206 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2024-02-19 15:02:20,220 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 15:02:20,220 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 15:02:20,220 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 15:02:20,262 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 15:02:20,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 91 flow [2024-02-19 15:02:20,332 INFO L124 PetriNetUnfolderBase]: 4/32 cut-off events. [2024-02-19 15:02:20,333 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 15:02:20,337 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. [2024-02-19 15:02:20,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 91 flow [2024-02-19 15:02:20,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 80 flow [2024-02-19 15:02:20,356 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 15:02:20,362 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;@58239761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 15:02:20,362 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 15:02:20,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 15:02:20,376 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-02-19 15:02:20,376 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 15:02:20,376 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:20,377 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] [2024-02-19 15:02:20,377 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)] === [2024-02-19 15:02:20,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:20,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1736156699, now seen corresponding path program 1 times [2024-02-19 15:02:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:20,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896403811] [2024-02-19 15:02:20,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:20,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:20,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:20,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896403811] [2024-02-19 15:02:20,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896403811] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:02:20,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:02:20,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:02:20,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631863333] [2024-02-19 15:02:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:20,793 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:02:20,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:02:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:02:20,834 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-19 15:02:20,836 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) [2024-02-19 15:02:20,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:20,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-19 15:02:20,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:21,128 INFO L124 PetriNetUnfolderBase]: 655/1008 cut-off events. [2024-02-19 15:02:21,128 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-02-19 15:02:21,133 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. [2024-02-19 15:02:21,139 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 35 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2024-02-19 15:02:21,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 207 flow [2024-02-19 15:02:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:02:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:02:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-02-19 15:02:21,149 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-02-19 15:02:21,152 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2024-02-19 15:02:21,153 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 47 transitions, 207 flow [2024-02-19 15:02:21,153 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) [2024-02-19 15:02:21,153 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:21,154 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] [2024-02-19 15:02:21,154 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 15:02:21,154 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)] === [2024-02-19 15:02:21,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:21,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1292858546, now seen corresponding path program 1 times [2024-02-19 15:02:21,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:21,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060198488] [2024-02-19 15:02:21,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:21,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:21,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:21,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060198488] [2024-02-19 15:02:21,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060198488] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:02:21,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:02:21,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 15:02:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692793837] [2024-02-19 15:02:21,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:21,319 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 15:02:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:21,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 15:02:21,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 15:02:21,325 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-02-19 15:02:21,326 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) [2024-02-19 15:02:21,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:21,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-02-19 15:02:21,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:21,459 INFO L124 PetriNetUnfolderBase]: 655/1009 cut-off events. [2024-02-19 15:02:21,459 INFO L125 PetriNetUnfolderBase]: For 192/224 co-relation queries the response was YES. [2024-02-19 15:02:21,461 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. [2024-02-19 15:02:21,466 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 2 changer transitions 1/48 dead transitions. [2024-02-19 15:02:21,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 293 flow [2024-02-19 15:02:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 15:02:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 15:02:21,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-02-19 15:02:21,467 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-19 15:02:21,468 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2024-02-19 15:02:21,468 INFO L507 AbstractCegarLoop]: Abstraction has has 41 places, 48 transitions, 293 flow [2024-02-19 15:02:21,468 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) [2024-02-19 15:02:21,469 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:21,469 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] [2024-02-19 15:02:21,469 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 15:02:21,469 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)] === [2024-02-19 15:02:21,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:21,470 INFO L85 PathProgramCache]: Analyzing trace with hash 785058019, now seen corresponding path program 1 times [2024-02-19 15:02:21,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:21,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565451671] [2024-02-19 15:02:21,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:02:21,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:21,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565451671] [2024-02-19 15:02:21,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565451671] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 15:02:21,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 15:02:21,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 15:02:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146325440] [2024-02-19 15:02:21,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:21,522 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 15:02:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:21,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 15:02:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 15:02:21,530 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:02:21,531 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) [2024-02-19 15:02:21,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:21,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:02:21,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:21,665 INFO L124 PetriNetUnfolderBase]: 868/1257 cut-off events. [2024-02-19 15:02:21,666 INFO L125 PetriNetUnfolderBase]: For 1309/1357 co-relation queries the response was YES. [2024-02-19 15:02:21,668 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. [2024-02-19 15:02:21,675 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 58 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-02-19 15:02:21,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 536 flow [2024-02-19 15:02:21,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 15:02:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 15:02:21,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-02-19 15:02:21,676 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-02-19 15:02:21,677 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 7 predicate places. [2024-02-19 15:02:21,677 INFO L507 AbstractCegarLoop]: Abstraction has has 44 places, 67 transitions, 536 flow [2024-02-19 15:02:21,677 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) [2024-02-19 15:02:21,677 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:21,678 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] [2024-02-19 15:02:21,678 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 15:02:21,678 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)] === [2024-02-19 15:02:21,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash 437691015, now seen corresponding path program 1 times [2024-02-19 15:02:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:21,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22155621] [2024-02-19 15:02:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:21,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22155621] [2024-02-19 15:02:21,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22155621] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:21,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739925167] [2024-02-19 15:02:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:21,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:21,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:21,765 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) [2024-02-19 15:02:21,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 15:02:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:21,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-19 15:02:21,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:21,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:21,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:02:21,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739925167] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:21,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 15:02:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-02-19 15:02:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27875758] [2024-02-19 15:02:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 15:02:21,961 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 15:02:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 15:02:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-19 15:02:21,967 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:02:21,967 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) [2024-02-19 15:02:21,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:21,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:02:21,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:22,065 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] 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))]) [2024-02-19 15:02:22,066 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,066 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,066 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,066 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,067 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:22,067 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,067 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,067 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,067 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,069 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} 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))]) [2024-02-19 15:02:22,069 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,069 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,069 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,069 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,070 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:22,070 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,070 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,070 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,070 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,072 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] 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))]) [2024-02-19 15:02:22,072 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,072 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,072 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,072 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-02-19 15:02:22,078 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [5#L94-4true, 4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:22,079 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is not cut-off event [2024-02-19 15:02:22,079 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-19 15:02:22,079 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-19 15:02:22,079 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is not cut-off event [2024-02-19 15:02:22,080 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} 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))]) [2024-02-19 15:02:22,080 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,080 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,080 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,080 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,080 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:22,081 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,081 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,081 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,081 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,081 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2024-02-19 15:02:22,081 INFO L292 olderBase$Statistics]: inserting event number 5 for the transition-marking pair ([436] L58-4-->thread2EXIT: Formula: (and (= |v_thread2Thread1of1ForFork2_#res.offset_1| 0) (= |v_thread2Thread1of1ForFork2_#res.base_1| 0) (<= v_~M~0_51 v_thread2Thread1of1ForFork2_~i~1_5)) InVars {~M~0=v_~M~0_51, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_5} OutVars{thread2Thread1of1ForFork2_#res.base=|v_thread2Thread1of1ForFork2_#res.base_1|, ~M~0=v_~M~0_51, thread2Thread1of1ForFork2_#res.offset=|v_thread2Thread1of1ForFork2_#res.offset_1|} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_~i~1, thread2Thread1of1ForFork2_#res.base, thread2Thread1of1ForFork2_#res.offset][62], [4#L47true, 18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 47#true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 6#thread2EXITtrue, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:22,081 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,082 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,082 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,082 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,082 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,085 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([437] L59-->L63: Formula: (let ((.cse0 (select (select |v_#memory_int#1_45| v_~A~0.base_65) (+ v_~A~0.offset_65 (* v_thread2Thread1of1ForFork2_~i~1_7 4))))) (or (and (= |v_thread2Thread1of1ForFork2_#t~mem6_2| |v_thread2Thread1of1ForFork2_#t~mem6_1|) (= v_~min2~0_37 v_~min2~0_36) (<= v_~min2~0_37 .cse0)) (and (= .cse0 v_~min2~0_36) (< .cse0 v_~min2~0_37)))) InVars {thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_1|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_37} OutVars{thread2Thread1of1ForFork2_#t~mem6=|v_thread2Thread1of1ForFork2_#t~mem6_2|, ~A~0.base=v_~A~0.base_65, thread2Thread1of1ForFork2_~i~1=v_thread2Thread1of1ForFork2_~i~1_7, ~A~0.offset=v_~A~0.offset_65, thread2Thread1of1ForFork2_#t~mem5=|v_thread2Thread1of1ForFork2_#t~mem5_1|, #memory_int#1=|v_#memory_int#1_45|, ~min2~0=v_~min2~0_36} AuxVars[] AssignedVars[thread2Thread1of1ForFork2_#t~mem6, thread2Thread1of1ForFork2_#t~mem5, ~min2~0][59], [18#L71true, 44#true, thread1Thread1of1ForFork1InUse, thread3Thread1of1ForFork0InUse, 35#L95-1true, 210#(and (<= (+ thread1Thread1of1ForFork1_~i~0 1) ~N~0) (<= 1 ~N~0)), 47#true, 31#L46-4true, 13#L63true, thread2Thread1of1ForFork2InUse, 55#(and (<= (+ thread3Thread1of1ForFork0_~i~2 1) ~N~0) (<= (+ ~M~0 1) ~N~0))]) [2024-02-19 15:02:22,085 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,085 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,085 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,085 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2024-02-19 15:02:22,119 INFO L124 PetriNetUnfolderBase]: 1130/1607 cut-off events. [2024-02-19 15:02:22,120 INFO L125 PetriNetUnfolderBase]: For 4245/4348 co-relation queries the response was YES. [2024-02-19 15:02:22,122 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. [2024-02-19 15:02:22,131 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 72 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-02-19 15:02:22,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 84 transitions, 822 flow [2024-02-19 15:02:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 15:02:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 15:02:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-02-19 15:02:22,132 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-02-19 15:02:22,133 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2024-02-19 15:02:22,133 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 84 transitions, 822 flow [2024-02-19 15:02:22,133 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) [2024-02-19 15:02:22,133 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:22,133 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] [2024-02-19 15:02:22,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-19 15:02:22,366 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 [2024-02-19 15:02:22,367 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)] === [2024-02-19 15:02:22,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1867981122, now seen corresponding path program 1 times [2024-02-19 15:02:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:22,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484754599] [2024-02-19 15:02:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:22,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:22,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:22,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484754599] [2024-02-19 15:02:22,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484754599] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:22,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673881218] [2024-02-19 15:02:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:22,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:22,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:22,877 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) [2024-02-19 15:02:22,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 15:02:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:22,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 30 conjunts are in the unsatisfiable core [2024-02-19 15:02:22,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:23,016 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 [2024-02-19 15:02:23,242 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 [2024-02-19 15:02:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:23,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:24,865 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 282 treesize of output 254 [2024-02-19 15:02:24,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:24,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2024-02-19 15:02:37,322 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 226 treesize of output 208 [2024-02-19 15:02:37,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:37,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-02-19 15:02:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:40,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673881218] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:40,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:40,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2024-02-19 15:02:40,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243108896] [2024-02-19 15:02:40,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:40,886 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-19 15:02:40,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-19 15:02:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-02-19 15:02:41,099 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:02:41,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 84 transitions, 822 flow. Second operand has 24 states, 24 states have (on average 11.0) internal successors, (264), 24 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:02:41,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:41,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:02:41,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:42,134 INFO L124 PetriNetUnfolderBase]: 1689/2443 cut-off events. [2024-02-19 15:02:42,134 INFO L125 PetriNetUnfolderBase]: For 6943/7039 co-relation queries the response was YES. [2024-02-19 15:02:42,138 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. [2024-02-19 15:02:42,158 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 169 selfloop transitions, 65 changer transitions 1/242 dead transitions. [2024-02-19 15:02:42,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 242 transitions, 2902 flow [2024-02-19 15:02:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-02-19 15:02:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-02-19 15:02:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 255 transitions. [2024-02-19 15:02:42,162 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-02-19 15:02:42,163 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2024-02-19 15:02:42,164 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 242 transitions, 2902 flow [2024-02-19 15:02:42,164 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.0) internal successors, (264), 24 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:02:42,164 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:42,166 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] [2024-02-19 15:02:42,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-19 15:02:42,378 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 [2024-02-19 15:02:42,379 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)] === [2024-02-19 15:02:42,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash 961640770, now seen corresponding path program 2 times [2024-02-19 15:02:42,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:42,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509054823] [2024-02-19 15:02:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:42,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509054823] [2024-02-19 15:02:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509054823] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348585976] [2024-02-19 15:02:42,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:02:42,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:42,942 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) [2024-02-19 15:02:42,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 15:02:43,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:02:43,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:02:43,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-19 15:02:43,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:43,070 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 [2024-02-19 15:02:43,252 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 [2024-02-19 15:02:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:43,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:44,845 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 183 treesize of output 167 [2024-02-19 15:02:44,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:44,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 219 [2024-02-19 15:02:48,995 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 106 treesize of output 96 [2024-02-19 15:02:49,020 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-02-19 15:02:49,021 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 125 treesize of output 115 [2024-02-19 15:02:49,226 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 217 treesize of output 195 [2024-02-19 15:02:49,236 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-02-19 15:02:49,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 1 [2024-02-19 15:02:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:49,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348585976] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:02:49,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:02:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-02-19 15:02:49,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148154038] [2024-02-19 15:02:49,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:02:49,297 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-02-19 15:02:49,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:02:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-02-19 15:02:49,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2024-02-19 15:02:49,463 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-19 15:02:49,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 242 transitions, 2902 flow. Second operand has 23 states, 23 states have (on average 10.173913043478262) internal successors, (234), 23 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:02:49,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:02:49,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-19 15:02:49,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:02:51,403 INFO L124 PetriNetUnfolderBase]: 2281/3301 cut-off events. [2024-02-19 15:02:51,403 INFO L125 PetriNetUnfolderBase]: For 10027/10125 co-relation queries the response was YES. [2024-02-19 15:02:51,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20612 conditions, 3301 events. 2281/3301 cut-off events. For 10027/10125 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16163 event pairs, 109 based on Foata normal form. 9/3290 useless extension candidates. Maximal degree in co-relation 15913. Up to 2640 conditions per place. [2024-02-19 15:02:51,429 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 277 selfloop transitions, 113 changer transitions 2/397 dead transitions. [2024-02-19 15:02:51,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 397 transitions, 5476 flow [2024-02-19 15:02:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 15:02:51,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 15:02:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 333 transitions. [2024-02-19 15:02:51,431 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4530612244897959 [2024-02-19 15:02:51,432 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 45 predicate places. [2024-02-19 15:02:51,432 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 397 transitions, 5476 flow [2024-02-19 15:02:51,432 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.173913043478262) internal successors, (234), 23 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:02:51,432 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:02:51,433 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] [2024-02-19 15:02:51,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-02-19 15:02:51,644 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 [2024-02-19 15:02:51,644 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)] === [2024-02-19 15:02:51,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:02:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2075764430, now seen corresponding path program 3 times [2024-02-19 15:02:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:02:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714161730] [2024-02-19 15:02:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:02:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:02:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:02:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:52,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:02:52,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714161730] [2024-02-19 15:02:52,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714161730] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:02:52,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193734993] [2024-02-19 15:02:52,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:02:52,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:02:52,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:02:52,097 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) [2024-02-19 15:02:52,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 15:02:52,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:02:52,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:02:52,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-19 15:02:52,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:02:52,209 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 [2024-02-19 15:02:52,460 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 41 [2024-02-19 15:02:52,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:02:52,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:02:53,941 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 282 treesize of output 254 [2024-02-19 15:02:53,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:02:53,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 372 treesize of output 376 [2024-02-19 15:03:10,195 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 226 treesize of output 208 [2024-02-19 15:03:10,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:03:10,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 261 treesize of output 291 [2024-02-19 15:03:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:12,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193734993] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:12,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:12,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2024-02-19 15:03:12,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620558768] [2024-02-19 15:03:12,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:12,720 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-19 15:03:12,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-19 15:03:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-02-19 15:03:12,864 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-19 15:03:12,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 397 transitions, 5476 flow. Second operand has 22 states, 22 states have (on average 10.136363636363637) internal successors, (223), 22 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:12,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:12,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-19 15:03:12,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:14,703 INFO L124 PetriNetUnfolderBase]: 3049/4416 cut-off events. [2024-02-19 15:03:14,703 INFO L125 PetriNetUnfolderBase]: For 16429/16573 co-relation queries the response was YES. [2024-02-19 15:03:14,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31889 conditions, 4416 events. 3049/4416 cut-off events. For 16429/16573 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23050 event pairs, 121 based on Foata normal form. 5/4399 useless extension candidates. Maximal degree in co-relation 26034. Up to 3601 conditions per place. [2024-02-19 15:03:14,741 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 474 selfloop transitions, 122 changer transitions 5/606 dead transitions. [2024-02-19 15:03:14,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 606 transitions, 9585 flow [2024-02-19 15:03:14,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 15:03:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 15:03:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 312 transitions. [2024-02-19 15:03:14,743 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4691729323308271 [2024-02-19 15:03:14,743 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 63 predicate places. [2024-02-19 15:03:14,743 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 606 transitions, 9585 flow [2024-02-19 15:03:14,743 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.136363636363637) internal successors, (223), 22 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:14,744 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:14,744 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] [2024-02-19 15:03:14,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 15:03:14,955 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 [2024-02-19 15:03:14,956 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)] === [2024-02-19 15:03:14,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1183594780, now seen corresponding path program 4 times [2024-02-19 15:03:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488725351] [2024-02-19 15:03:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:14,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:15,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:15,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488725351] [2024-02-19 15:03:15,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488725351] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:15,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801195980] [2024-02-19 15:03:15,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:03:15,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:15,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:15,411 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) [2024-02-19 15:03:15,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 15:03:15,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:03:15,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:15,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 32 conjunts are in the unsatisfiable core [2024-02-19 15:03:15,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:15,530 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 [2024-02-19 15:03:15,711 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 [2024-02-19 15:03:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:15,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:17,025 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 106 treesize of output 96 [2024-02-19 15:03:17,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:03:17,033 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 125 treesize of output 119 [2024-02-19 15:03:17,285 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 217 treesize of output 195 [2024-02-19 15:03:17,293 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-02-19 15:03:17,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 296 treesize of output 1 [2024-02-19 15:03:17,297 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 183 treesize of output 167 [2024-02-19 15:03:17,308 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-02-19 15:03:17,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 215 treesize of output 1 [2024-02-19 15:03:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:17,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801195980] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:17,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:17,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-02-19 15:03:17,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497628113] [2024-02-19 15:03:17,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:17,339 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-02-19 15:03:17,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:17,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-02-19 15:03:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-02-19 15:03:17,485 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 35 [2024-02-19 15:03:17,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 606 transitions, 9585 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) [2024-02-19 15:03:17,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:17,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 35 [2024-02-19 15:03:17,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:19,288 INFO L124 PetriNetUnfolderBase]: 3393/4911 cut-off events. [2024-02-19 15:03:19,288 INFO L125 PetriNetUnfolderBase]: For 22843/23029 co-relation queries the response was YES. [2024-02-19 15:03:19,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40172 conditions, 4911 events. 3393/4911 cut-off events. For 22843/23029 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25828 event pairs, 129 based on Foata normal form. 10/4895 useless extension candidates. Maximal degree in co-relation 32440. Up to 4038 conditions per place. [2024-02-19 15:03:19,327 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 487 selfloop transitions, 229 changer transitions 7/728 dead transitions. [2024-02-19 15:03:19,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 728 transitions, 12971 flow [2024-02-19 15:03:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-19 15:03:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-19 15:03:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 350 transitions. [2024-02-19 15:03:19,329 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-02-19 15:03:19,330 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 84 predicate places. [2024-02-19 15:03:19,330 INFO L507 AbstractCegarLoop]: Abstraction has has 121 places, 728 transitions, 12971 flow [2024-02-19 15:03:19,330 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) [2024-02-19 15:03:19,330 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:19,331 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] [2024-02-19 15:03:19,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 15:03:19,541 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 [2024-02-19 15:03:19,542 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)] === [2024-02-19 15:03:19,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1574460974, now seen corresponding path program 5 times [2024-02-19 15:03:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:19,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860547016] [2024-02-19 15:03:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:19,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:19,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:19,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860547016] [2024-02-19 15:03:19,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860547016] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:19,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116817660] [2024-02-19 15:03:19,979 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:03:19,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:19,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:19,981 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) [2024-02-19 15:03:20,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 15:03:20,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:03:20,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:20,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 28 conjunts are in the unsatisfiable core [2024-02-19 15:03:20,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:20,087 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 [2024-02-19 15:03:20,407 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 [2024-02-19 15:03:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:20,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:22,711 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 128 treesize of output 114 [2024-02-19 15:03:22,713 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 155 treesize of output 141 [2024-02-19 15:03:22,779 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 76 treesize of output 66 [2024-02-19 15:03:22,782 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 93 treesize of output 83 [2024-02-19 15:03:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116817660] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:22,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:22,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2024-02-19 15:03:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103215149] [2024-02-19 15:03:22,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:22,817 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-02-19 15:03:22,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-02-19 15:03:22,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2024-02-19 15:03:22,904 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:03:22,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 728 transitions, 12971 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) [2024-02-19 15:03:22,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:22,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:03:22,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:27,742 INFO L124 PetriNetUnfolderBase]: 4949/7128 cut-off events. [2024-02-19 15:03:27,742 INFO L125 PetriNetUnfolderBase]: For 39554/39688 co-relation queries the response was YES. [2024-02-19 15:03:27,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64942 conditions, 7128 events. 4949/7128 cut-off events. For 39554/39688 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 39374 event pairs, 70 based on Foata normal form. 10/7130 useless extension candidates. Maximal degree in co-relation 48574. Up to 5790 conditions per place. [2024-02-19 15:03:27,805 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 859 selfloop transitions, 325 changer transitions 10/1197 dead transitions. [2024-02-19 15:03:27,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 1197 transitions, 23338 flow [2024-02-19 15:03:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-19 15:03:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-19 15:03:27,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 544 transitions. [2024-02-19 15:03:27,811 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40902255639097745 [2024-02-19 15:03:27,812 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 121 predicate places. [2024-02-19 15:03:27,812 INFO L507 AbstractCegarLoop]: Abstraction has has 158 places, 1197 transitions, 23338 flow [2024-02-19 15:03:27,813 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) [2024-02-19 15:03:27,813 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:27,813 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] [2024-02-19 15:03:27,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-19 15:03:28,024 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 [2024-02-19 15:03:28,025 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)] === [2024-02-19 15:03:28,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:28,025 INFO L85 PathProgramCache]: Analyzing trace with hash -190554337, now seen corresponding path program 6 times [2024-02-19 15:03:28,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:28,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109249504] [2024-02-19 15:03:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:28,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:28,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:28,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109249504] [2024-02-19 15:03:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109249504] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673689524] [2024-02-19 15:03:28,122 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:03:28,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:28,137 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) [2024-02-19 15:03:28,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 15:03:28,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 15:03:28,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:28,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:03:28,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:28,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:28,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:03:28,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673689524] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:28,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:28,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2024-02-19 15:03:28,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117089375] [2024-02-19 15:03:28,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:28,411 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:03:28,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:03:28,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:03:28,427 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:03:28,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 1197 transitions, 23338 flow. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:28,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:28,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:03:28,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:31,604 INFO L124 PetriNetUnfolderBase]: 12287/17596 cut-off events. [2024-02-19 15:03:31,604 INFO L125 PetriNetUnfolderBase]: For 104361/104361 co-relation queries the response was YES. [2024-02-19 15:03:31,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158208 conditions, 17596 events. 12287/17596 cut-off events. For 104361/104361 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 99328 event pairs, 505 based on Foata normal form. 242/17836 useless extension candidates. Maximal degree in co-relation 89900. Up to 12003 conditions per place. [2024-02-19 15:03:31,855 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 1838 selfloop transitions, 482 changer transitions 9/2330 dead transitions. [2024-02-19 15:03:31,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 2330 transitions, 48078 flow [2024-02-19 15:03:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-19 15:03:31,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-19 15:03:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 478 transitions. [2024-02-19 15:03:31,861 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42678571428571427 [2024-02-19 15:03:31,862 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 150 predicate places. [2024-02-19 15:03:31,862 INFO L507 AbstractCegarLoop]: Abstraction has has 187 places, 2330 transitions, 48078 flow [2024-02-19 15:03:31,862 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:31,862 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:31,862 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] [2024-02-19 15:03:31,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-02-19 15:03:32,072 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 [2024-02-19 15:03:32,073 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)] === [2024-02-19 15:03:32,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash -364673256, now seen corresponding path program 1 times [2024-02-19 15:03:32,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:32,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800965676] [2024-02-19 15:03:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:32,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:32,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800965676] [2024-02-19 15:03:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800965676] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:32,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067794642] [2024-02-19 15:03:32,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:32,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:32,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:32,184 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) [2024-02-19 15:03:32,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 15:03:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:32,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:03:32,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:32,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:32,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:32,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067794642] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:32,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:32,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-02-19 15:03:32,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972149847] [2024-02-19 15:03:32,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:32,343 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-02-19 15:03:32,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:32,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-02-19 15:03:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-02-19 15:03:32,376 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:03:32,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 2330 transitions, 48078 flow. Second operand has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:32,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:32,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:03:32,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:35,754 INFO L124 PetriNetUnfolderBase]: 9453/13868 cut-off events. [2024-02-19 15:03:35,755 INFO L125 PetriNetUnfolderBase]: For 125450/125450 co-relation queries the response was YES. [2024-02-19 15:03:35,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137444 conditions, 13868 events. 9453/13868 cut-off events. For 125450/125450 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 79588 event pairs, 149 based on Foata normal form. 694/14560 useless extension candidates. Maximal degree in co-relation 69734. Up to 9585 conditions per place. [2024-02-19 15:03:35,859 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 2165 selfloop transitions, 190 changer transitions 11/2696 dead transitions. [2024-02-19 15:03:35,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 2696 transitions, 61114 flow [2024-02-19 15:03:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 15:03:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 15:03:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-02-19 15:03:35,861 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5190476190476191 [2024-02-19 15:03:35,861 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 155 predicate places. [2024-02-19 15:03:35,861 INFO L507 AbstractCegarLoop]: Abstraction has has 192 places, 2696 transitions, 61114 flow [2024-02-19 15:03:35,861 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.23076923076923) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:35,861 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:35,861 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] [2024-02-19 15:03:35,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 15:03:36,072 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 [2024-02-19 15:03:36,073 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)] === [2024-02-19 15:03:36,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:36,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1903529853, now seen corresponding path program 7 times [2024-02-19 15:03:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:36,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963872601] [2024-02-19 15:03:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:36,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:36,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:36,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963872601] [2024-02-19 15:03:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963872601] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:36,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202196885] [2024-02-19 15:03:36,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:03:36,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:36,137 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) [2024-02-19 15:03:36,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 15:03:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:36,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:03:36,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:36,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:36,258 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:36,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202196885] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:36,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:36,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-19 15:03:36,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616417339] [2024-02-19 15:03:36,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:36,300 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 15:03:36,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:36,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 15:03:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-02-19 15:03:36,318 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:03:36,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 2696 transitions, 61114 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) [2024-02-19 15:03:36,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:36,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:03:36,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:39,646 INFO L124 PetriNetUnfolderBase]: 8129/12044 cut-off events. [2024-02-19 15:03:39,647 INFO L125 PetriNetUnfolderBase]: For 124849/124849 co-relation queries the response was YES. [2024-02-19 15:03:39,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129782 conditions, 12044 events. 8129/12044 cut-off events. For 124849/124849 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 68537 event pairs, 123 based on Foata normal form. 284/12326 useless extension candidates. Maximal degree in co-relation 75294. Up to 8429 conditions per place. [2024-02-19 15:03:39,740 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 2020 selfloop transitions, 150 changer transitions 77/2426 dead transitions. [2024-02-19 15:03:39,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 2426 transitions, 59496 flow [2024-02-19 15:03:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:03:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:03:39,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-02-19 15:03:39,741 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-02-19 15:03:39,742 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 160 predicate places. [2024-02-19 15:03:39,742 INFO L507 AbstractCegarLoop]: Abstraction has has 197 places, 2426 transitions, 59496 flow [2024-02-19 15:03:39,742 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) [2024-02-19 15:03:39,742 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:39,742 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] [2024-02-19 15:03:39,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-02-19 15:03:39,952 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 [2024-02-19 15:03:39,953 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)] === [2024-02-19 15:03:39,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash -148484861, now seen corresponding path program 8 times [2024-02-19 15:03:39,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:39,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555486578] [2024-02-19 15:03:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:39,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:40,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:40,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555486578] [2024-02-19 15:03:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555486578] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99315059] [2024-02-19 15:03:40,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:03:40,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:40,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:40,031 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) [2024-02-19 15:03:40,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 15:03:40,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:03:40,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:40,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 15:03:40,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:40,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 15:03:40,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99315059] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:40,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:40,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-02-19 15:03:40,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693222297] [2024-02-19 15:03:40,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:40,340 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 15:03:40,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 15:03:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-02-19 15:03:40,375 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-02-19 15:03:40,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 2426 transitions, 59496 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) [2024-02-19 15:03:40,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:40,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-02-19 15:03:40,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:43,626 INFO L124 PetriNetUnfolderBase]: 6969/10405 cut-off events. [2024-02-19 15:03:43,626 INFO L125 PetriNetUnfolderBase]: For 126067/126067 co-relation queries the response was YES. [2024-02-19 15:03:43,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120740 conditions, 10405 events. 6969/10405 cut-off events. For 126067/126067 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 58607 event pairs, 119 based on Foata normal form. 276/10679 useless extension candidates. Maximal degree in co-relation 80924. Up to 7339 conditions per place. [2024-02-19 15:03:43,726 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 984 selfloop transitions, 3 changer transitions 1111/2233 dead transitions. [2024-02-19 15:03:43,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2233 transitions, 59035 flow [2024-02-19 15:03:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 15:03:43,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 15:03:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-02-19 15:03:43,727 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-02-19 15:03:43,727 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 166 predicate places. [2024-02-19 15:03:43,728 INFO L507 AbstractCegarLoop]: Abstraction has has 203 places, 2233 transitions, 59035 flow [2024-02-19 15:03:43,728 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) [2024-02-19 15:03:43,728 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:43,728 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] [2024-02-19 15:03:43,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-19 15:03:43,939 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 [2024-02-19 15:03:43,939 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)] === [2024-02-19 15:03:43,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:43,940 INFO L85 PathProgramCache]: Analyzing trace with hash 143563994, now seen corresponding path program 9 times [2024-02-19 15:03:43,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:43,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291682768] [2024-02-19 15:03:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:43,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:44,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291682768] [2024-02-19 15:03:44,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291682768] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:44,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480229584] [2024-02-19 15:03:44,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:03:44,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:44,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:44,072 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) [2024-02-19 15:03:44,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 15:03:44,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-02-19 15:03:44,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:44,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:03:44,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:44,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 15:03:44,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480229584] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:44,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:44,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-19 15:03:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953077112] [2024-02-19 15:03:44,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:44,349 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:03:44,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:03:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:03:44,383 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:03:44,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 2233 transitions, 59035 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) [2024-02-19 15:03:44,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:44,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:03:44,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:03:49,192 INFO L124 PetriNetUnfolderBase]: 9908/14598 cut-off events. [2024-02-19 15:03:49,193 INFO L125 PetriNetUnfolderBase]: For 190824/190824 co-relation queries the response was YES. [2024-02-19 15:03:49,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184304 conditions, 14598 events. 9908/14598 cut-off events. For 190824/190824 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 81471 event pairs, 117 based on Foata normal form. 32/14628 useless extension candidates. Maximal degree in co-relation 140570. Up to 10578 conditions per place. [2024-02-19 15:03:49,333 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 1646 selfloop transitions, 400 changer transitions 1111/3274 dead transitions. [2024-02-19 15:03:49,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 3274 transitions, 92805 flow [2024-02-19 15:03:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-02-19 15:03:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-02-19 15:03:49,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 279 transitions. [2024-02-19 15:03:49,335 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4689075630252101 [2024-02-19 15:03:49,335 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 182 predicate places. [2024-02-19 15:03:49,335 INFO L507 AbstractCegarLoop]: Abstraction has has 219 places, 3274 transitions, 92805 flow [2024-02-19 15:03:49,336 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) [2024-02-19 15:03:49,336 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:03:49,336 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] [2024-02-19 15:03:49,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-02-19 15:03:49,550 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 [2024-02-19 15:03:49,551 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)] === [2024-02-19 15:03:49,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:03:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash -2117307316, now seen corresponding path program 10 times [2024-02-19 15:03:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:03:49,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501132265] [2024-02-19 15:03:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:03:49,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:03:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:03:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:03:49,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:03:49,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501132265] [2024-02-19 15:03:49,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501132265] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:03:49,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284004188] [2024-02-19 15:03:49,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:03:49,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:03:49,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:03:49,685 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) [2024-02-19 15:03:49,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 15:03:49,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:03:49,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:03:49,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:03:49,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:03:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:03:49,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:03:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:03:49,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284004188] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:03:49,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:03:49,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 17 [2024-02-19 15:03:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551763337] [2024-02-19 15:03:49,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:03:49,904 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 15:03:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:03:49,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 15:03:49,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-02-19 15:03:49,924 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:03:49,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 3274 transitions, 92805 flow. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:03:49,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:03:49,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:03:49,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:04:03,189 INFO L124 PetriNetUnfolderBase]: 14413/20975 cut-off events. [2024-02-19 15:04:03,190 INFO L125 PetriNetUnfolderBase]: For 276567/276567 co-relation queries the response was YES. [2024-02-19 15:04:03,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291036 conditions, 20975 events. 14413/20975 cut-off events. For 276567/276567 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 120596 event pairs, 77 based on Foata normal form. 34/21007 useless extension candidates. Maximal degree in co-relation 243588. Up to 15787 conditions per place. [2024-02-19 15:04:03,400 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 2638 selfloop transitions, 1187 changer transitions 1118/4944 dead transitions. [2024-02-19 15:04:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 4944 transitions, 148501 flow [2024-02-19 15:04:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-02-19 15:04:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-02-19 15:04:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 681 transitions. [2024-02-19 15:04:03,404 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39708454810495625 [2024-02-19 15:04:03,404 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 230 predicate places. [2024-02-19 15:04:03,405 INFO L507 AbstractCegarLoop]: Abstraction has has 267 places, 4944 transitions, 148501 flow [2024-02-19 15:04:03,405 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 15:04:03,405 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:04:03,405 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] [2024-02-19 15:04:03,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 15:04:03,616 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 [2024-02-19 15:04:03,617 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)] === [2024-02-19 15:04:03,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:04:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1267745596, now seen corresponding path program 11 times [2024-02-19 15:04:03,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:04:03,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979375226] [2024-02-19 15:04:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:04:03,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:04:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:04:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:04:03,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:04:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979375226] [2024-02-19 15:04:03,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979375226] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:04:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779939046] [2024-02-19 15:04:03,721 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:04:03,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:04:03,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:04:03,737 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) [2024-02-19 15:04:03,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 15:04:03,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:04:03,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:04:03,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:04:03,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:04:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:04:03,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:04:03,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:04:03,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779939046] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:04:03,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:04:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-19 15:04:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587772816] [2024-02-19 15:04:03,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:04:03,998 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:04:03,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:04:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:04:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:04:04,015 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:04:04,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 4944 transitions, 148501 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) [2024-02-19 15:04:04,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:04:04,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:04:04,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:04:30,246 INFO L124 PetriNetUnfolderBase]: 17835/25722 cut-off events. [2024-02-19 15:04:30,246 INFO L125 PetriNetUnfolderBase]: For 335325/335325 co-relation queries the response was YES. [2024-02-19 15:04:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384315 conditions, 25722 events. 17835/25722 cut-off events. For 335325/335325 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 150345 event pairs, 93 based on Foata normal form. 34/25754 useless extension candidates. Maximal degree in co-relation 333172. Up to 20055 conditions per place. [2024-02-19 15:04:30,527 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 3381 selfloop transitions, 1658 changer transitions 1118/6158 dead transitions. [2024-02-19 15:04:30,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 6158 transitions, 196647 flow [2024-02-19 15:04:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-02-19 15:04:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2024-02-19 15:04:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 1047 transitions. [2024-02-19 15:04:30,530 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39360902255639096 [2024-02-19 15:04:30,530 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 305 predicate places. [2024-02-19 15:04:30,530 INFO L507 AbstractCegarLoop]: Abstraction has has 342 places, 6158 transitions, 196647 flow [2024-02-19 15:04:30,530 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) [2024-02-19 15:04:30,530 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:04:30,530 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] [2024-02-19 15:04:30,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-19 15:04:30,744 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 [2024-02-19 15:04:30,744 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)] === [2024-02-19 15:04:30,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:04:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1012437900, now seen corresponding path program 12 times [2024-02-19 15:04:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:04:30,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531291005] [2024-02-19 15:04:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:04:30,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:04:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:04:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:04:30,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:04:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531291005] [2024-02-19 15:04:30,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531291005] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:04:30,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750300221] [2024-02-19 15:04:30,831 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 15:04:30,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:04:30,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:04:30,833 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) [2024-02-19 15:04:30,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 15:04:30,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-19 15:04:30,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:04:30,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:04:30,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:04:31,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:04:31,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:04:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:04:31,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750300221] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:04:31,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:04:31,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-02-19 15:04:31,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461256643] [2024-02-19 15:04:31,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:04:31,105 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:04:31,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:04:31,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:04:31,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:04:31,140 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:04:31,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 6158 transitions, 196647 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) [2024-02-19 15:04:31,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:04:31,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:04:31,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:05:12,982 INFO L124 PetriNetUnfolderBase]: 19926/28760 cut-off events. [2024-02-19 15:05:12,983 INFO L125 PetriNetUnfolderBase]: For 400354/400354 co-relation queries the response was YES. [2024-02-19 15:05:13,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458935 conditions, 28760 events. 19926/28760 cut-off events. For 400354/400354 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 171519 event pairs, 99 based on Foata normal form. 32/28790 useless extension candidates. Maximal degree in co-relation 389621. Up to 22044 conditions per place. [2024-02-19 15:05:13,329 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 4007 selfloop transitions, 1599 changer transitions 1545/7152 dead transitions. [2024-02-19 15:05:13,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 7152 transitions, 242554 flow [2024-02-19 15:05:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-02-19 15:05:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-02-19 15:05:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 740 transitions. [2024-02-19 15:05:13,342 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2024-02-19 15:05:13,342 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 356 predicate places. [2024-02-19 15:05:13,342 INFO L507 AbstractCegarLoop]: Abstraction has has 393 places, 7152 transitions, 242554 flow [2024-02-19 15:05:13,342 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) [2024-02-19 15:05:13,343 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:05:13,343 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] [2024-02-19 15:05:13,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 15:05:13,554 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 [2024-02-19 15:05:13,554 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)] === [2024-02-19 15:05:13,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:05:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1077071518, now seen corresponding path program 13 times [2024-02-19 15:05:13,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:05:13,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349549573] [2024-02-19 15:05:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:05:13,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:05:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:05:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:05:13,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:05:13,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349549573] [2024-02-19 15:05:13,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349549573] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:05:13,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203840427] [2024-02-19 15:05:13,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 15:05:13,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:05:13,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:05:13,721 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) [2024-02-19 15:05:13,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 15:05:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:05:13,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:05:13,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:05:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:05:13,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:05:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:05:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203840427] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:05:13,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:05:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-02-19 15:05:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370429012] [2024-02-19 15:05:13,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:05:13,998 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:05:13,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:05:13,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:05:13,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:05:14,044 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:05:14,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 7152 transitions, 242554 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) [2024-02-19 15:05:14,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:05:14,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:05:14,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:01,539 INFO L124 PetriNetUnfolderBase]: 20535/29655 cut-off events. [2024-02-19 15:06:01,540 INFO L125 PetriNetUnfolderBase]: For 438395/438395 co-relation queries the response was YES. [2024-02-19 15:06:01,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500513 conditions, 29655 events. 20535/29655 cut-off events. For 438395/438395 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 177919 event pairs, 95 based on Foata normal form. 34/29687 useless extension candidates. Maximal degree in co-relation 426934. Up to 22831 conditions per place. [2024-02-19 15:06:02,093 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 4268 selfloop transitions, 1161 changer transitions 1545/7403 dead transitions. [2024-02-19 15:06:02,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 7403 transitions, 265248 flow [2024-02-19 15:06:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-02-19 15:06:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-02-19 15:06:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 300 transitions. [2024-02-19 15:06:02,095 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-02-19 15:06:02,095 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 373 predicate places. [2024-02-19 15:06:02,095 INFO L507 AbstractCegarLoop]: Abstraction has has 410 places, 7403 transitions, 265248 flow [2024-02-19 15:06:02,095 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) [2024-02-19 15:06:02,095 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:02,096 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] [2024-02-19 15:06:02,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-02-19 15:06:02,297 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 [2024-02-19 15:06:02,297 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)] === [2024-02-19 15:06:02,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:02,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1986985902, now seen corresponding path program 14 times [2024-02-19 15:06:02,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:02,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112166588] [2024-02-19 15:06:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:06:02,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:02,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112166588] [2024-02-19 15:06:02,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112166588] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:02,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890857325] [2024-02-19 15:06:02,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:06:02,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:02,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:02,455 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) [2024-02-19 15:06:02,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 15:06:02,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:06:02,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:02,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:06:02,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:06:02,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:06:02,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890857325] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:02,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:02,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-02-19 15:06:02,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932249234] [2024-02-19 15:06:02,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:02,765 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-02-19 15:06:02,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:02,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-02-19 15:06:02,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-02-19 15:06:02,810 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:06:02,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 7403 transitions, 265248 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) [2024-02-19 15:06:02,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:02,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:06:02,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:06:57,256 INFO L124 PetriNetUnfolderBase]: 24647/35540 cut-off events. [2024-02-19 15:06:57,257 INFO L125 PetriNetUnfolderBase]: For 572619/572619 co-relation queries the response was YES. [2024-02-19 15:06:57,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632681 conditions, 35540 events. 24647/35540 cut-off events. For 572619/572619 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 217793 event pairs, 107 based on Foata normal form. 34/35572 useless extension candidates. Maximal degree in co-relation 553900. Up to 27919 conditions per place. [2024-02-19 15:06:57,926 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 5059 selfloop transitions, 1658 changer transitions 1545/8691 dead transitions. [2024-02-19 15:06:57,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 8691 transitions, 329054 flow [2024-02-19 15:06:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-02-19 15:06:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-02-19 15:06:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 560 transitions. [2024-02-19 15:06:57,928 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-02-19 15:06:57,928 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 405 predicate places. [2024-02-19 15:06:57,928 INFO L507 AbstractCegarLoop]: Abstraction has has 442 places, 8691 transitions, 329054 flow [2024-02-19 15:06:57,929 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) [2024-02-19 15:06:57,929 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:06:57,929 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] [2024-02-19 15:06:57,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-02-19 15:06:58,140 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 [2024-02-19 15:06:58,141 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)] === [2024-02-19 15:06:58,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:06:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2052673698, now seen corresponding path program 15 times [2024-02-19 15:06:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:06:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815114580] [2024-02-19 15:06:58,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:06:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:06:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:06:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:06:58,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:06:58,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815114580] [2024-02-19 15:06:58,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815114580] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:06:58,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501754381] [2024-02-19 15:06:58,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 15:06:58,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:06:58,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:06:58,241 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) [2024-02-19 15:06:58,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 15:06:58,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 15:06:58,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:06:58,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 15:06:58,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:06:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:06:58,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:06:58,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:06:58,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501754381] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:06:58,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:06:58,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-02-19 15:06:58,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066592284] [2024-02-19 15:06:58,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:06:58,551 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-02-19 15:06:58,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:06:58,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-02-19 15:06:58,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-02-19 15:06:58,591 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-02-19 15:06:58,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 8691 transitions, 329054 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) [2024-02-19 15:06:58,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:06:58,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-02-19 15:06:58,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:08:34,036 INFO L124 PetriNetUnfolderBase]: 30840/44278 cut-off events. [2024-02-19 15:08:34,037 INFO L125 PetriNetUnfolderBase]: For 727104/727104 co-relation queries the response was YES. [2024-02-19 15:08:34,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828292 conditions, 44278 events. 30840/44278 cut-off events. For 727104/727104 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 274698 event pairs, 103 based on Foata normal form. 32/44308 useless extension candidates. Maximal degree in co-relation 742698. Up to 35256 conditions per place. [2024-02-19 15:08:34,851 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 6221 selfloop transitions, 1702 changer transitions 1545/9897 dead transitions. [2024-02-19 15:08:34,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 9897 transitions, 394396 flow [2024-02-19 15:08:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-19 15:08:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-19 15:08:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 465 transitions. [2024-02-19 15:08:34,853 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-02-19 15:08:34,858 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 431 predicate places. [2024-02-19 15:08:34,858 INFO L507 AbstractCegarLoop]: Abstraction has has 468 places, 9897 transitions, 394396 flow [2024-02-19 15:08:34,859 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) [2024-02-19 15:08:34,859 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:08:34,859 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] [2024-02-19 15:08:34,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-19 15:08:35,070 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 [2024-02-19 15:08:35,070 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)] === [2024-02-19 15:08:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:08:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -589697472, now seen corresponding path program 16 times [2024-02-19 15:08:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:08:35,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515660652] [2024-02-19 15:08:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:08:35,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:08:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:08:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:08:35,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:08:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515660652] [2024-02-19 15:08:35,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515660652] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:08:35,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99671485] [2024-02-19 15:08:35,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 15:08:35,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:08:35,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:08:35,176 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) [2024-02-19 15:08:35,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-19 15:08:35,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 15:08:35,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:08:35,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:08:35,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:08:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:08:35,349 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:08:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:08:35,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99671485] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:08:35,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:08:35,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2024-02-19 15:08:35,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491653844] [2024-02-19 15:08:35,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:08:35,424 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-02-19 15:08:35,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:08:35,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-02-19 15:08:35,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-02-19 15:08:35,439 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:08:35,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 9897 transitions, 394396 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) [2024-02-19 15:08:35,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:08:35,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:08:35,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:11:01,573 INFO L124 PetriNetUnfolderBase]: 37862/54052 cut-off events. [2024-02-19 15:11:01,574 INFO L125 PetriNetUnfolderBase]: For 864955/864955 co-relation queries the response was YES. [2024-02-19 15:11:01,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065192 conditions, 54052 events. 37862/54052 cut-off events. For 864955/864955 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 338418 event pairs, 111 based on Foata normal form. 34/54084 useless extension candidates. Maximal degree in co-relation 972475. Up to 43660 conditions per place. [2024-02-19 15:11:02,593 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 7274 selfloop transitions, 2914 changer transitions 1545/11734 dead transitions. [2024-02-19 15:11:02,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 11734 transitions, 485628 flow [2024-02-19 15:11:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-02-19 15:11:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-02-19 15:11:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1454 transitions. [2024-02-19 15:11:02,596 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39191374663072776 [2024-02-19 15:11:02,597 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 536 predicate places. [2024-02-19 15:11:02,597 INFO L507 AbstractCegarLoop]: Abstraction has has 573 places, 11734 transitions, 485628 flow [2024-02-19 15:11:02,597 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) [2024-02-19 15:11:02,597 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:11:02,597 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] [2024-02-19 15:11:02,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-02-19 15:11:02,808 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 [2024-02-19 15:11:02,809 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)] === [2024-02-19 15:11:02,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:11:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash -845005168, now seen corresponding path program 17 times [2024-02-19 15:11:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:11:02,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187304769] [2024-02-19 15:11:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:11:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:11:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:11:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-02-19 15:11:02,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:11:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187304769] [2024-02-19 15:11:02,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187304769] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:11:02,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313183564] [2024-02-19 15:11:02,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 15:11:02,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:11:02,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:11:02,901 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) [2024-02-19 15:11:02,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-19 15:11:03,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-19 15:11:03,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:11:03,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 15:11:03,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:11:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:03,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:11:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 15:11:03,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313183564] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 15:11:03,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 15:11:03,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-02-19 15:11:03,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525470119] [2024-02-19 15:11:03,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 15:11:03,156 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-02-19 15:11:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 15:11:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-02-19 15:11:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-02-19 15:11:03,191 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2024-02-19 15:11:03,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 11734 transitions, 485628 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) [2024-02-19 15:11:03,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 15:11:03,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2024-02-19 15:11:03,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 15:14:34,094 INFO L124 PetriNetUnfolderBase]: 45145/64099 cut-off events. [2024-02-19 15:14:34,094 INFO L125 PetriNetUnfolderBase]: For 968979/968979 co-relation queries the response was YES. [2024-02-19 15:14:34,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327799 conditions, 64099 events. 45145/64099 cut-off events. For 968979/968979 co-relation queries the response was YES. Maximal size of possible extension queue 1569. Compared 404691 event pairs, 103 based on Foata normal form. 32/64129 useless extension candidates. Maximal degree in co-relation 1227914. Up to 52381 conditions per place. [2024-02-19 15:14:35,363 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 8213 selfloop transitions, 3846 changer transitions 1545/13605 dead transitions. [2024-02-19 15:14:35,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 13605 transitions, 587289 flow [2024-02-19 15:14:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-02-19 15:14:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2024-02-19 15:14:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 1676 transitions. [2024-02-19 15:14:35,366 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39574970484061395 [2024-02-19 15:14:35,367 INFO L308 CegarLoopForPetriNet]: 37 programPoint places, 653 predicate places. [2024-02-19 15:14:35,367 INFO L507 AbstractCegarLoop]: Abstraction has has 690 places, 13605 transitions, 587289 flow [2024-02-19 15:14:35,367 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) [2024-02-19 15:14:35,367 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 15:14:35,367 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] [2024-02-19 15:14:35,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-19 15:14:35,578 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 [2024-02-19 15:14:35,578 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)] === [2024-02-19 15:14:35,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 15:14:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1694461372, now seen corresponding path program 2 times [2024-02-19 15:14:35,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 15:14:35,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677129447] [2024-02-19 15:14:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 15:14:35,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 15:14:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 15:14:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 15:14:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677129447] [2024-02-19 15:14:37,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677129447] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 15:14:37,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662715148] [2024-02-19 15:14:37,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 15:14:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 15:14:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 15:14:37,154 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) [2024-02-19 15:14:37,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-19 15:14:37,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 15:14:37,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 15:14:37,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjunts are in the unsatisfiable core [2024-02-19 15:14:37,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 15:14:37,381 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 [2024-02-19 15:14:38,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:14:38,593 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 152 treesize of output 98 [2024-02-19 15:14:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 15:14:39,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 15:14:51,678 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 1016 treesize of output 912 [2024-02-19 15:14:53,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 15:14:53,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 1393 treesize of output 2031 Killed by 15