./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-trans.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/array-eq-trans.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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:19:15,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:19:15,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:19:15,454 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:19:15,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:19:15,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:19:15,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:19:15,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:19:15,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:19:15,487 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:19:15,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:19:15,487 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:19:15,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:19:15,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:19:15,489 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:19:15,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:19:15,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:19:15,490 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:19:15,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:19:15,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:19:15,490 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:19:15,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:19:15,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:19:15,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:19:15,492 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:19:15,492 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:19:15,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:19:15,492 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:19:15,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:19:15,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:19:15,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:19:15,494 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:19:15,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:19:15,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:19:15,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:19:15,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:19:15,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:19:15,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:19:15,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:19:15,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:19:15,496 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:19:15,497 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:19:15,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:19:15,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:19:15,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:19:15,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:19:15,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:19:15,794 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:19:15,794 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:19:15,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-02-19 14:19:16,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:19:17,139 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:19:17,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-02-19 14:19:17,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6e24fb3/36502fdf16004d40948f5c3857bcbf86/FLAG0701a5b2f [2024-02-19 14:19:17,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc6e24fb3/36502fdf16004d40948f5c3857bcbf86 [2024-02-19 14:19:17,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:19:17,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:19:17,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:19:17,161 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:19:17,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:19:17,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e37864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17, skipping insertion in model container [2024-02-19 14:19:17,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,183 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:19:17,359 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/array-eq-trans.wvr.c[2737,2750] [2024-02-19 14:19:17,372 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:19:17,380 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:19:17,413 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/array-eq-trans.wvr.c[2737,2750] [2024-02-19 14:19:17,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:19:17,434 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:19:17,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17 WrapperNode [2024-02-19 14:19:17,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:19:17,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:19:17,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:19:17,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:19:17,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,499 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 212 [2024-02-19 14:19:17,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:19:17,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:19:17,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:19:17,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:19:17,510 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,549 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 2, 15, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2024-02-19 14:19:17,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,575 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,577 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,578 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:19:17,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:19:17,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:19:17,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:19:17,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (1/1) ... [2024-02-19 14:19:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:19:17,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:17,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-19 14:19:17,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-19 14:19:17,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:19:17,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:19:17,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:19:17,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:19:17,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:19:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:19:17,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:19:17,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:19:17,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:19:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:19:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:19:17,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:19:17,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:19:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:19:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:19:17,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:19:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:19:17,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:19:17,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:19:17,706 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:19:17,814 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:19:17,816 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:19:18,095 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:19:18,095 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:19:18,403 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:19:18,403 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-19 14:19:18,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:19:18 BoogieIcfgContainer [2024-02-19 14:19:18,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:19:18,405 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:19:18,405 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:19:18,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:19:18,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:19:17" (1/3) ... [2024-02-19 14:19:18,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d778e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:19:18, skipping insertion in model container [2024-02-19 14:19:18,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:19:17" (2/3) ... [2024-02-19 14:19:18,410 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d778e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:19:18, skipping insertion in model container [2024-02-19 14:19:18,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:19:18" (3/3) ... [2024-02-19 14:19:18,412 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-02-19 14:19:18,427 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:19:18,427 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:19:18,428 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:19:18,468 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:19:18,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 99 flow [2024-02-19 14:19:18,548 INFO L124 PetriNetUnfolderBase]: 9/36 cut-off events. [2024-02-19 14:19:18,549 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:19:18,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 36 events. 9/36 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-02-19 14:19:18,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 99 flow [2024-02-19 14:19:18,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 35 transitions, 88 flow [2024-02-19 14:19:18,568 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:19:18,574 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;@a5ccbec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:19:18,574 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:19:18,585 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:19:18,586 INFO L124 PetriNetUnfolderBase]: 9/34 cut-off events. [2024-02-19 14:19:18,586 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:19:18,587 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:18,587 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] [2024-02-19 14:19:18,588 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 14:19:18,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1803983425, now seen corresponding path program 1 times [2024-02-19 14:19:18,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:18,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287488242] [2024-02-19 14:19:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:18,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:19,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:19,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287488242] [2024-02-19 14:19:19,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287488242] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:19,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:19,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-19 14:19:19,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028106572] [2024-02-19 14:19:19,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:19,402 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:19:19,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:19:19,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:19:19,430 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-02-19 14:19:19,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:19,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:19,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-02-19 14:19:19,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:19,637 INFO L124 PetriNetUnfolderBase]: 999/1385 cut-off events. [2024-02-19 14:19:19,637 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-02-19 14:19:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 1385 events. 999/1385 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4454 event pairs, 586 based on Foata normal form. 1/972 useless extension candidates. Maximal degree in co-relation 1388. Up to 815 conditions per place. [2024-02-19 14:19:19,644 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 33 selfloop transitions, 2 changer transitions 28/64 dead transitions. [2024-02-19 14:19:19,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 64 transitions, 290 flow [2024-02-19 14:19:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:19:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:19:19,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-02-19 14:19:19,653 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-02-19 14:19:19,655 INFO L308 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-02-19 14:19:19,655 INFO L507 AbstractCegarLoop]: Abstraction has has 39 places, 64 transitions, 290 flow [2024-02-19 14:19:19,656 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:19,656 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:19,656 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 14:19:19,656 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:19:19,656 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 14:19:19,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1612335905, now seen corresponding path program 1 times [2024-02-19 14:19:19,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:19,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653019744] [2024-02-19 14:19:19,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:19,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653019744] [2024-02-19 14:19:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653019744] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:19:19,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428286757] [2024-02-19 14:19:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:19,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:19,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:19,889 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 14:19:19,903 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 14:19:20,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:20,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:19:20,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:20,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:20,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:19:20,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2024-02-19 14:19:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:19:20,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428286757] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:19:20,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:20,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 11 [2024-02-19 14:19:20,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482008894] [2024-02-19 14:19:20,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:20,307 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:19:20,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:20,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:19:20,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-02-19 14:19:20,308 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-02-19 14:19:20,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 64 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:20,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:20,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-02-19 14:19:20,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:20,584 INFO L124 PetriNetUnfolderBase]: 1889/2668 cut-off events. [2024-02-19 14:19:20,585 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-02-19 14:19:20,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8255 conditions, 2668 events. 1889/2668 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10961 event pairs, 524 based on Foata normal form. 1/1917 useless extension candidates. Maximal degree in co-relation 4356. Up to 1826 conditions per place. [2024-02-19 14:19:20,595 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 54 selfloop transitions, 4 changer transitions 68/127 dead transitions. [2024-02-19 14:19:20,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 127 transitions, 839 flow [2024-02-19 14:19:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:19:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:19:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-02-19 14:19:20,597 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5487179487179488 [2024-02-19 14:19:20,598 INFO L308 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-02-19 14:19:20,598 INFO L507 AbstractCegarLoop]: Abstraction has has 43 places, 127 transitions, 839 flow [2024-02-19 14:19:20,598 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:20,598 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:20,599 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 14:19:20,613 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 14:19:20,811 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:20,811 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 14:19:20,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:20,812 INFO L85 PathProgramCache]: Analyzing trace with hash -176330605, now seen corresponding path program 1 times [2024-02-19 14:19:20,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:20,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459661442] [2024-02-19 14:19:20,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:20,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:20,948 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 14:19:20,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:20,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459661442] [2024-02-19 14:19:20,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459661442] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:20,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:20,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:19:20,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233692833] [2024-02-19 14:19:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:20,951 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:19:20,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:20,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:19:20,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:19:20,954 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-02-19 14:19:20,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 127 transitions, 839 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:20,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:20,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-02-19 14:19:20,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:21,382 INFO L124 PetriNetUnfolderBase]: 3545/5065 cut-off events. [2024-02-19 14:19:21,382 INFO L125 PetriNetUnfolderBase]: For 355/355 co-relation queries the response was YES. [2024-02-19 14:19:21,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20751 conditions, 5065 events. 3545/5065 cut-off events. For 355/355 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23839 event pairs, 754 based on Foata normal form. 0/3731 useless extension candidates. Maximal degree in co-relation 7704. Up to 3000 conditions per place. [2024-02-19 14:19:21,402 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 79 selfloop transitions, 4 changer transitions 173/257 dead transitions. [2024-02-19 14:19:21,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 257 transitions, 2218 flow [2024-02-19 14:19:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:19:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:19:21,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-02-19 14:19:21,404 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2024-02-19 14:19:21,405 INFO L308 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-02-19 14:19:21,405 INFO L507 AbstractCegarLoop]: Abstraction has has 47 places, 257 transitions, 2218 flow [2024-02-19 14:19:21,405 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:21,405 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:21,405 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] [2024-02-19 14:19:21,405 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-19 14:19:21,406 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 14:19:21,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash 995044815, now seen corresponding path program 1 times [2024-02-19 14:19:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175120271] [2024-02-19 14:19:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:21,665 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 14:19:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:21,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175120271] [2024-02-19 14:19:21,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175120271] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:19:21,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401215157] [2024-02-19 14:19:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:21,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:21,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:21,679 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 14:19:21,682 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 14:19:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:21,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-19 14:19:21,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:21,924 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 14:19:21,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:21,952 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:19:21,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 55 [2024-02-19 14:19:22,040 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 14:19:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401215157] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:19:22,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:22,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 13 [2024-02-19 14:19:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261683876] [2024-02-19 14:19:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:22,041 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:19:22,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:19:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:19:22,042 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-02-19 14:19:22,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 257 transitions, 2218 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 14:19:22,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:22,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-02-19 14:19:22,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:23,243 INFO L124 PetriNetUnfolderBase]: 9551/14043 cut-off events. [2024-02-19 14:19:23,243 INFO L125 PetriNetUnfolderBase]: For 1591/1591 co-relation queries the response was YES. [2024-02-19 14:19:23,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71575 conditions, 14043 events. 9551/14043 cut-off events. For 1591/1591 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 82992 event pairs, 689 based on Foata normal form. 3/10756 useless extension candidates. Maximal degree in co-relation 26472. Up to 8381 conditions per place. [2024-02-19 14:19:23,305 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 190 selfloop transitions, 12 changer transitions 590/793 dead transitions. [2024-02-19 14:19:23,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 793 transitions, 8459 flow [2024-02-19 14:19:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:19:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:19:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-02-19 14:19:23,308 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5531135531135531 [2024-02-19 14:19:23,310 INFO L308 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-02-19 14:19:23,310 INFO L507 AbstractCegarLoop]: Abstraction has has 53 places, 793 transitions, 8459 flow [2024-02-19 14:19:23,310 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 14:19:23,311 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:23,311 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:23,336 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 14:19:23,538 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-19 14:19:23,539 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 14:19:23,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1172475487, now seen corresponding path program 1 times [2024-02-19 14:19:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:23,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392412550] [2024-02-19 14:19:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:23,623 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 14:19:23,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:23,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392412550] [2024-02-19 14:19:23,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392412550] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:23,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:23,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:19:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141205945] [2024-02-19 14:19:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:23,625 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:19:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:19:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:19:23,626 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-02-19 14:19:23,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 793 transitions, 8459 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:23,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:23,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-02-19 14:19:23,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:25,428 INFO L124 PetriNetUnfolderBase]: 11642/17302 cut-off events. [2024-02-19 14:19:25,428 INFO L125 PetriNetUnfolderBase]: For 1963/1963 co-relation queries the response was YES. [2024-02-19 14:19:25,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105562 conditions, 17302 events. 11642/17302 cut-off events. For 1963/1963 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 107186 event pairs, 933 based on Foata normal form. 0/13516 useless extension candidates. Maximal degree in co-relation 31704. Up to 10330 conditions per place. [2024-02-19 14:19:25,487 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 197 selfloop transitions, 6 changer transitions 888/1092 dead transitions. [2024-02-19 14:19:25,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 1092 transitions, 13847 flow [2024-02-19 14:19:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-19 14:19:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-19 14:19:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-02-19 14:19:25,489 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-19 14:19:25,489 INFO L308 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-02-19 14:19:25,489 INFO L507 AbstractCegarLoop]: Abstraction has has 57 places, 1092 transitions, 13847 flow [2024-02-19 14:19:25,490 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:25,490 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:25,490 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 14:19:25,490 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-19 14:19:25,490 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 14:19:25,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1814676215, now seen corresponding path program 1 times [2024-02-19 14:19:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458015971] [2024-02-19 14:19:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:25,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:19:25,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458015971] [2024-02-19 14:19:25,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458015971] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:19:25,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626742388] [2024-02-19 14:19:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:25,641 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 14:19:25,659 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 14:19:25,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:25,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 14:19:25,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:19:25,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:19:25,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626742388] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:19:25,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:19:25,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 13 [2024-02-19 14:19:25,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194119072] [2024-02-19 14:19:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:25,947 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:19:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:19:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:19:25,948 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-02-19 14:19:25,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 1092 transitions, 13847 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:25,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:25,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-02-19 14:19:25,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:30,064 INFO L124 PetriNetUnfolderBase]: 19920/29831 cut-off events. [2024-02-19 14:19:30,064 INFO L125 PetriNetUnfolderBase]: For 3946/3946 co-relation queries the response was YES. [2024-02-19 14:19:30,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211146 conditions, 29831 events. 19920/29831 cut-off events. For 3946/3946 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 199361 event pairs, 914 based on Foata normal form. 0/23537 useless extension candidates. Maximal degree in co-relation 77256. Up to 22841 conditions per place. [2024-02-19 14:19:30,187 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 463 selfloop transitions, 31 changer transitions 1552/2047 dead transitions. [2024-02-19 14:19:30,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 2047 transitions, 29930 flow [2024-02-19 14:19:30,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:19:30,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:19:30,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-02-19 14:19:30,189 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4981684981684982 [2024-02-19 14:19:30,189 INFO L308 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-02-19 14:19:30,189 INFO L507 AbstractCegarLoop]: Abstraction has has 63 places, 2047 transitions, 29930 flow [2024-02-19 14:19:30,189 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:30,190 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:30,190 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] [2024-02-19 14:19:30,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:19:30,404 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 14:19:30,405 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 14:19:30,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1492825102, now seen corresponding path program 1 times [2024-02-19 14:19:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:30,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766744201] [2024-02-19 14:19:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:30,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:19:31,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:31,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766744201] [2024-02-19 14:19:31,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766744201] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:19:31,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:19:31,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:19:31,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879566203] [2024-02-19 14:19:31,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:19:31,472 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:19:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:19:31,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:19:31,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:19:31,474 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 39 [2024-02-19 14:19:31,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 2047 transitions, 29930 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:31,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:19:31,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 39 [2024-02-19 14:19:31,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:19:38,273 INFO L124 PetriNetUnfolderBase]: 20635/30922 cut-off events. [2024-02-19 14:19:38,274 INFO L125 PetriNetUnfolderBase]: For 4099/4099 co-relation queries the response was YES. [2024-02-19 14:19:38,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249778 conditions, 30922 events. 20635/30922 cut-off events. For 4099/4099 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 208379 event pairs, 583 based on Foata normal form. 52/24444 useless extension candidates. Maximal degree in co-relation 116175. Up to 24289 conditions per place. [2024-02-19 14:19:38,393 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 510 selfloop transitions, 13 changer transitions 1639/2163 dead transitions. [2024-02-19 14:19:38,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 2163 transitions, 35941 flow [2024-02-19 14:19:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:19:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:19:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-02-19 14:19:38,394 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5427350427350427 [2024-02-19 14:19:38,395 INFO L308 CegarLoopForPetriNet]: 36 programPoint places, 32 predicate places. [2024-02-19 14:19:38,395 INFO L507 AbstractCegarLoop]: Abstraction has has 68 places, 2163 transitions, 35941 flow [2024-02-19 14:19:38,395 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-19 14:19:38,396 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:19:38,396 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:19:38,396 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-19 14:19:38,396 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 14:19:38,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:19:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1303328904, now seen corresponding path program 1 times [2024-02-19 14:19:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:19:38,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332085124] [2024-02-19 14:19:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:19:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:19:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:19:39,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332085124] [2024-02-19 14:19:39,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332085124] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:19:39,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100028656] [2024-02-19 14:19:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:19:39,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:19:39,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:19:39,170 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 14:19:39,208 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 14:19:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:19:39,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-19 14:19:39,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:19:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:19:39,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:19:40,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-19 14:19:40,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 127 treesize of output 490