/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:30:52,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:30:52,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:30:52,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:30:52,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:30:52,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:30:52,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:30:52,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:30:52,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:30:52,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:30:52,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:30:52,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:30:52,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:30:52,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:30:52,585 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:30:52,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:30:52,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:30:52,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:30:52,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:30:52,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:30:52,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:30:52,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:30:52,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:30:52,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:30:52,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:30:52,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:30:52,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:30:52,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:30:52,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:30:52,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:30:52,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:30:52,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:30:52,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:30:52,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:30:52,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:30:52,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:30:52,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:30:52,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:30:52,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:30:52,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:30:52,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:30:52,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 19:30:52,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:30:52,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:30:52,639 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:30:52,639 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:30:52,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:30:52,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:30:52,640 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:30:52,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:30:52,640 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:30:52,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:30:52,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:30:52,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:30:52,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:30:52,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:30:52,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:30:52,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:30:52,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:30:52,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:30:52,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:30:52,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:30:52,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:30:52,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:30:52,643 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:30:52,643 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:30:52,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:30:52,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:30:52,907 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:30:52,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:30:52,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:30:52,910 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:30:52,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-12-05 19:30:53,849 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:30:54,011 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:30:54,012 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-12-05 19:30:54,017 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cdfbacb/c03051ab56544b3c924bc771c0f2a39e/FLAG24a9ad54e [2022-12-05 19:30:54,027 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81cdfbacb/c03051ab56544b3c924bc771c0f2a39e [2022-12-05 19:30:54,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:30:54,030 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:30:54,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:30:54,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:30:54,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:30:54,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a8da54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54, skipping insertion in model container [2022-12-05 19:30:54,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:30:54,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:30:54,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:30:54,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:30:54,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:30:54,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:30:54,163 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:30:54,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:30:54,179 WARN L237 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-queue-add-2-nl.wvr.c[2870,2883] [2022-12-05 19:30:54,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:30:54,199 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:30:54,212 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:30:54,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:30:54,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:30:54,216 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:30:54,217 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:30:54,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:30:54,229 WARN L237 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-queue-add-2-nl.wvr.c[2870,2883] [2022-12-05 19:30:54,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:30:54,245 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:30:54,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54 WrapperNode [2022-12-05 19:30:54,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:30:54,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:30:54,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:30:54,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:30:54,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,285 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 163 [2022-12-05 19:30:54,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:30:54,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:30:54,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:30:54,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:30:54,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,312 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:30:54,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:30:54,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:30:54,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:30:54,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (1/1) ... [2022-12-05 19:30:54,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:30:54,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:30:54,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 19:30:54,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 19:30:54,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:30:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:30:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:30:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:30:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 19:30:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:30:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:30:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:30:54,415 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:30:54,542 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:30:54,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:30:54,774 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:30:54,838 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:30:54,838 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-05 19:30:54,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:30:54 BoogieIcfgContainer [2022-12-05 19:30:54,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:30:54,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:30:54,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:30:54,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:30:54,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:30:54" (1/3) ... [2022-12-05 19:30:54,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63789d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:30:54, skipping insertion in model container [2022-12-05 19:30:54,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:30:54" (2/3) ... [2022-12-05 19:30:54,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63789d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:30:54, skipping insertion in model container [2022-12-05 19:30:54,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:30:54" (3/3) ... [2022-12-05 19:30:54,845 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-12-05 19:30:54,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:30:54,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:30:54,857 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:30:54,895 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 19:30:54,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 133 transitions, 282 flow [2022-12-05 19:30:54,972 INFO L130 PetriNetUnfolder]: 11/131 cut-off events. [2022-12-05 19:30:54,972 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 19:30:54,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 11/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 96. Up to 3 conditions per place. [2022-12-05 19:30:54,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 133 transitions, 282 flow [2022-12-05 19:30:54,986 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 123 transitions, 258 flow [2022-12-05 19:30:54,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:30:54,999 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@3c9fd6cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:30:54,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 19:30:55,028 INFO L130 PetriNetUnfolder]: 11/122 cut-off events. [2022-12-05 19:30:55,028 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 19:30:55,028 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:55,029 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:55,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1186405957, now seen corresponding path program 1 times [2022-12-05 19:30:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904047926] [2022-12-05 19:30:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:30:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:30:55,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:30:55,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904047926] [2022-12-05 19:30:55,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904047926] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:30:55,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:30:55,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 19:30:55,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841222375] [2022-12-05 19:30:55,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:30:55,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-05 19:30:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:30:55,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-05 19:30:55,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-05 19:30:55,316 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 133 [2022-12-05 19:30:55,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 123 transitions, 258 flow. Second operand has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 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) [2022-12-05 19:30:55,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:30:55,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 133 [2022-12-05 19:30:55,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:30:55,378 INFO L130 PetriNetUnfolder]: 12/149 cut-off events. [2022-12-05 19:30:55,378 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-05 19:30:55,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 149 events. 12/149 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 203 event pairs, 5 based on Foata normal form. 14/150 useless extension candidates. Maximal degree in co-relation 94. Up to 22 conditions per place. [2022-12-05 19:30:55,381 INFO L137 encePairwiseOnDemand]: 125/133 looper letters, 7 selfloop transitions, 0 changer transitions 4/115 dead transitions. [2022-12-05 19:30:55,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 256 flow [2022-12-05 19:30:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-05 19:30:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-05 19:30:55,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2022-12-05 19:30:55,395 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9360902255639098 [2022-12-05 19:30:55,396 INFO L175 Difference]: Start difference. First operand has 119 places, 123 transitions, 258 flow. Second operand 2 states and 249 transitions. [2022-12-05 19:30:55,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 115 transitions, 256 flow [2022-12-05 19:30:55,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:30:55,407 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 226 flow [2022-12-05 19:30:55,408 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=226, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2022-12-05 19:30:55,411 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2022-12-05 19:30:55,411 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 226 flow [2022-12-05 19:30:55,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 120.0) internal successors, (240), 2 states have internal predecessors, (240), 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) [2022-12-05 19:30:55,412 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:55,413 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:55,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:30:55,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:55,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1969845943, now seen corresponding path program 1 times [2022-12-05 19:30:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:55,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080536090] [2022-12-05 19:30:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:55,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:30:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:30:55,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:30:55,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080536090] [2022-12-05 19:30:55,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080536090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:30:55,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:30:55,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:30:55,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717747112] [2022-12-05 19:30:55,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:30:55,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:30:55,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:30:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:30:55,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:30:55,867 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 133 [2022-12-05 19:30:55,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 105.66666666666667) internal successors, (634), 6 states have internal predecessors, (634), 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) [2022-12-05 19:30:55,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:30:55,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 133 [2022-12-05 19:30:55,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:30:55,969 INFO L130 PetriNetUnfolder]: 12/179 cut-off events. [2022-12-05 19:30:55,970 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 19:30:55,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 179 events. 12/179 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 290 event pairs, 5 based on Foata normal form. 5/173 useless extension candidates. Maximal degree in co-relation 227. Up to 31 conditions per place. [2022-12-05 19:30:55,971 INFO L137 encePairwiseOnDemand]: 123/133 looper letters, 19 selfloop transitions, 6 changer transitions 3/118 dead transitions. [2022-12-05 19:30:55,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 298 flow [2022-12-05 19:30:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:30:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:30:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 752 transitions. [2022-12-05 19:30:55,975 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.807733619763695 [2022-12-05 19:30:55,975 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 226 flow. Second operand 7 states and 752 transitions. [2022-12-05 19:30:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 298 flow [2022-12-05 19:30:55,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-05 19:30:55,977 INFO L231 Difference]: Finished difference. Result has 120 places, 112 transitions, 252 flow [2022-12-05 19:30:55,978 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=120, PETRI_TRANSITIONS=112} [2022-12-05 19:30:55,978 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 1 predicate places. [2022-12-05 19:30:55,978 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 112 transitions, 252 flow [2022-12-05 19:30:55,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.66666666666667) internal successors, (634), 6 states have internal predecessors, (634), 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) [2022-12-05 19:30:55,979 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:55,979 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:55,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:30:55,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:55,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash -603791204, now seen corresponding path program 1 times [2022-12-05 19:30:55,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:55,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210526376] [2022-12-05 19:30:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:55,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:30:56,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:30:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:30:56,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210526376] [2022-12-05 19:30:56,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210526376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:30:56,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:30:56,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:30:56,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455264556] [2022-12-05 19:30:56,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:30:56,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:30:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:30:56,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:30:56,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:30:56,178 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 133 [2022-12-05 19:30:56,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-12-05 19:30:56,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:30:56,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 133 [2022-12-05 19:30:56,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:30:56,233 INFO L130 PetriNetUnfolder]: 12/152 cut-off events. [2022-12-05 19:30:56,233 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-05 19:30:56,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 152 events. 12/152 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 185 event pairs, 1 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 202. Up to 22 conditions per place. [2022-12-05 19:30:56,236 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 11 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2022-12-05 19:30:56,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 115 transitions, 291 flow [2022-12-05 19:30:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:30:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:30:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-12-05 19:30:56,241 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8872180451127819 [2022-12-05 19:30:56,241 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 252 flow. Second operand 3 states and 354 transitions. [2022-12-05 19:30:56,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 115 transitions, 291 flow [2022-12-05 19:30:56,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 115 transitions, 281 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:30:56,245 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 265 flow [2022-12-05 19:30:56,245 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=265, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2022-12-05 19:30:56,246 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2022-12-05 19:30:56,246 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 265 flow [2022-12-05 19:30:56,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2022-12-05 19:30:56,247 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:56,247 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 19:30:56,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1368000736, now seen corresponding path program 2 times [2022-12-05 19:30:56,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:56,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207854944] [2022-12-05 19:30:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:30:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:30:56,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:30:56,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207854944] [2022-12-05 19:30:56,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207854944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:30:56,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:30:56,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:30:56,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678647990] [2022-12-05 19:30:56,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:30:56,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:30:56,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:30:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:30:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:30:56,951 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:30:56,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 265 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:56,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:30:56,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:30:56,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:30:57,261 INFO L130 PetriNetUnfolder]: 116/395 cut-off events. [2022-12-05 19:30:57,261 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2022-12-05 19:30:57,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 395 events. 116/395 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1457 event pairs, 55 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 765. Up to 177 conditions per place. [2022-12-05 19:30:57,263 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 60 selfloop transitions, 20 changer transitions 7/156 dead transitions. [2022-12-05 19:30:57,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 156 transitions, 553 flow [2022-12-05 19:30:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:30:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:30:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1320 transitions. [2022-12-05 19:30:57,265 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6203007518796992 [2022-12-05 19:30:57,266 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 265 flow. Second operand 16 states and 1320 transitions. [2022-12-05 19:30:57,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 156 transitions, 553 flow [2022-12-05 19:30:57,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 156 transitions, 527 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-12-05 19:30:57,269 INFO L231 Difference]: Finished difference. Result has 138 places, 129 transitions, 362 flow [2022-12-05 19:30:57,269 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=362, PETRI_PLACES=138, PETRI_TRANSITIONS=129} [2022-12-05 19:30:57,269 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 19 predicate places. [2022-12-05 19:30:57,270 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 129 transitions, 362 flow [2022-12-05 19:30:57,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:57,270 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:57,270 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:57,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 19:30:57,271 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:57,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:57,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1645609608, now seen corresponding path program 3 times [2022-12-05 19:30:57,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:57,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716005373] [2022-12-05 19:30:57,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:57,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:30:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:30:57,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:30:57,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716005373] [2022-12-05 19:30:57,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716005373] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:30:57,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:30:57,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:30:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563633694] [2022-12-05 19:30:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:30:57,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:30:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:30:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:30:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:30:57,780 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:30:57,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 129 transitions, 362 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:57,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:30:57,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:30:57,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:30:58,137 INFO L130 PetriNetUnfolder]: 127/441 cut-off events. [2022-12-05 19:30:58,138 INFO L131 PetriNetUnfolder]: For 160/160 co-relation queries the response was YES. [2022-12-05 19:30:58,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 441 events. 127/441 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1962 event pairs, 18 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 982. Up to 172 conditions per place. [2022-12-05 19:30:58,140 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 70 selfloop transitions, 24 changer transitions 6/169 dead transitions. [2022-12-05 19:30:58,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 169 transitions, 710 flow [2022-12-05 19:30:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 19:30:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 19:30:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1485 transitions. [2022-12-05 19:30:58,144 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6203007518796992 [2022-12-05 19:30:58,144 INFO L175 Difference]: Start difference. First operand has 138 places, 129 transitions, 362 flow. Second operand 18 states and 1485 transitions. [2022-12-05 19:30:58,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 169 transitions, 710 flow [2022-12-05 19:30:58,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 169 transitions, 690 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-12-05 19:30:58,148 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 440 flow [2022-12-05 19:30:58,148 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=440, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2022-12-05 19:30:58,148 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 31 predicate places. [2022-12-05 19:30:58,148 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 440 flow [2022-12-05 19:30:58,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:58,149 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:58,149 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 19:30:58,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:58,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1583218410, now seen corresponding path program 4 times [2022-12-05 19:30:58,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:58,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048081996] [2022-12-05 19:30:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:58,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:30:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:30:58,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:30:58,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048081996] [2022-12-05 19:30:58,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048081996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:30:58,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:30:58,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:30:58,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708173355] [2022-12-05 19:30:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:30:58,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:30:58,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:30:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:30:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:30:58,645 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:30:58,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 440 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:58,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:30:58,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:30:58,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:30:58,905 INFO L130 PetriNetUnfolder]: 138/481 cut-off events. [2022-12-05 19:30:58,905 INFO L131 PetriNetUnfolder]: For 428/428 co-relation queries the response was YES. [2022-12-05 19:30:58,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 481 events. 138/481 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2283 event pairs, 22 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 1233. Up to 216 conditions per place. [2022-12-05 19:30:58,908 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 68 selfloop transitions, 30 changer transitions 6/173 dead transitions. [2022-12-05 19:30:58,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 173 transitions, 847 flow [2022-12-05 19:30:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:30:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:30:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1325 transitions. [2022-12-05 19:30:58,932 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6226503759398496 [2022-12-05 19:30:58,933 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 440 flow. Second operand 16 states and 1325 transitions. [2022-12-05 19:30:58,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 173 transitions, 847 flow [2022-12-05 19:30:58,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 173 transitions, 786 flow, removed 12 selfloop flow, removed 12 redundant places. [2022-12-05 19:30:58,937 INFO L231 Difference]: Finished difference. Result has 158 places, 146 transitions, 580 flow [2022-12-05 19:30:58,937 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=580, PETRI_PLACES=158, PETRI_TRANSITIONS=146} [2022-12-05 19:30:58,937 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 39 predicate places. [2022-12-05 19:30:58,938 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 146 transitions, 580 flow [2022-12-05 19:30:58,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:58,938 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:58,938 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:58,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 19:30:58,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:58,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:58,939 INFO L85 PathProgramCache]: Analyzing trace with hash 256373004, now seen corresponding path program 5 times [2022-12-05 19:30:58,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:58,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706551415] [2022-12-05 19:30:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:58,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:30:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:30:59,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:30:59,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706551415] [2022-12-05 19:30:59,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706551415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:30:59,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:30:59,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:30:59,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703619618] [2022-12-05 19:30:59,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:30:59,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:30:59,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:30:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:30:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:30:59,375 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:30:59,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 146 transitions, 580 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:59,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:30:59,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:30:59,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:30:59,628 INFO L130 PetriNetUnfolder]: 142/500 cut-off events. [2022-12-05 19:30:59,629 INFO L131 PetriNetUnfolder]: For 815/815 co-relation queries the response was YES. [2022-12-05 19:30:59,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1493 conditions, 500 events. 142/500 cut-off events. For 815/815 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2400 event pairs, 68 based on Foata normal form. 1/488 useless extension candidates. Maximal degree in co-relation 1470. Up to 228 conditions per place. [2022-12-05 19:30:59,632 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 72 selfloop transitions, 36 changer transitions 6/183 dead transitions. [2022-12-05 19:30:59,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 183 transitions, 1056 flow [2022-12-05 19:30:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:30:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:30:59,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1327 transitions. [2022-12-05 19:30:59,634 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6235902255639098 [2022-12-05 19:30:59,634 INFO L175 Difference]: Start difference. First operand has 158 places, 146 transitions, 580 flow. Second operand 16 states and 1327 transitions. [2022-12-05 19:30:59,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 183 transitions, 1056 flow [2022-12-05 19:30:59,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 183 transitions, 989 flow, removed 17 selfloop flow, removed 9 redundant places. [2022-12-05 19:30:59,640 INFO L231 Difference]: Finished difference. Result has 169 places, 159 transitions, 780 flow [2022-12-05 19:30:59,640 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=780, PETRI_PLACES=169, PETRI_TRANSITIONS=159} [2022-12-05 19:30:59,640 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 50 predicate places. [2022-12-05 19:30:59,641 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 159 transitions, 780 flow [2022-12-05 19:30:59,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:30:59,641 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:30:59,641 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:30:59,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 19:30:59,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:30:59,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:30:59,642 INFO L85 PathProgramCache]: Analyzing trace with hash -514582416, now seen corresponding path program 6 times [2022-12-05 19:30:59,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:30:59,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243774099] [2022-12-05 19:30:59,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:30:59,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:30:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:00,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:00,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243774099] [2022-12-05 19:31:00,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243774099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:00,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:00,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:31:00,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365162745] [2022-12-05 19:31:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:00,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:31:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:00,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:31:00,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:31:00,104 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:31:00,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 159 transitions, 780 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:00,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:00,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:31:00,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:00,403 INFO L130 PetriNetUnfolder]: 144/517 cut-off events. [2022-12-05 19:31:00,403 INFO L131 PetriNetUnfolder]: For 1342/1342 co-relation queries the response was YES. [2022-12-05 19:31:00,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 517 events. 144/517 cut-off events. For 1342/1342 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2577 event pairs, 69 based on Foata normal form. 1/509 useless extension candidates. Maximal degree in co-relation 1622. Up to 240 conditions per place. [2022-12-05 19:31:00,407 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 77 selfloop transitions, 31 changer transitions 6/183 dead transitions. [2022-12-05 19:31:00,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 183 transitions, 1154 flow [2022-12-05 19:31:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:31:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:31:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1322 transitions. [2022-12-05 19:31:00,409 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6212406015037594 [2022-12-05 19:31:00,409 INFO L175 Difference]: Start difference. First operand has 169 places, 159 transitions, 780 flow. Second operand 16 states and 1322 transitions. [2022-12-05 19:31:00,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 183 transitions, 1154 flow [2022-12-05 19:31:00,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 183 transitions, 1069 flow, removed 38 selfloop flow, removed 7 redundant places. [2022-12-05 19:31:00,415 INFO L231 Difference]: Finished difference. Result has 178 places, 160 transitions, 789 flow [2022-12-05 19:31:00,416 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=789, PETRI_PLACES=178, PETRI_TRANSITIONS=160} [2022-12-05 19:31:00,416 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 59 predicate places. [2022-12-05 19:31:00,416 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 160 transitions, 789 flow [2022-12-05 19:31:00,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:00,417 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:00,417 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:00,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 19:31:00,417 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:00,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1334731432, now seen corresponding path program 7 times [2022-12-05 19:31:00,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:00,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210254293] [2022-12-05 19:31:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:00,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:00,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210254293] [2022-12-05 19:31:00,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210254293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:00,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:00,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:31:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989355231] [2022-12-05 19:31:00,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:00,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:31:00,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:31:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:31:00,896 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:31:00,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 160 transitions, 789 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:00,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:00,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:31:00,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:01,244 INFO L130 PetriNetUnfolder]: 148/537 cut-off events. [2022-12-05 19:31:01,244 INFO L131 PetriNetUnfolder]: For 1535/1535 co-relation queries the response was YES. [2022-12-05 19:31:01,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1713 conditions, 537 events. 148/537 cut-off events. For 1535/1535 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2770 event pairs, 44 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 1684. Up to 232 conditions per place. [2022-12-05 19:31:01,247 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 77 selfloop transitions, 36 changer transitions 6/188 dead transitions. [2022-12-05 19:31:01,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 188 transitions, 1213 flow [2022-12-05 19:31:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-05 19:31:01,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-05 19:31:01,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1403 transitions. [2022-12-05 19:31:01,250 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6205218929677134 [2022-12-05 19:31:01,250 INFO L175 Difference]: Start difference. First operand has 178 places, 160 transitions, 789 flow. Second operand 17 states and 1403 transitions. [2022-12-05 19:31:01,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 188 transitions, 1213 flow [2022-12-05 19:31:01,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 188 transitions, 1129 flow, removed 12 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:01,256 INFO L231 Difference]: Finished difference. Result has 183 places, 163 transitions, 842 flow [2022-12-05 19:31:01,257 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=842, PETRI_PLACES=183, PETRI_TRANSITIONS=163} [2022-12-05 19:31:01,257 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 64 predicate places. [2022-12-05 19:31:01,257 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 163 transitions, 842 flow [2022-12-05 19:31:01,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:01,258 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:01,258 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:01,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 19:31:01,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:01,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:01,259 INFO L85 PathProgramCache]: Analyzing trace with hash 640766380, now seen corresponding path program 8 times [2022-12-05 19:31:01,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:01,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690512824] [2022-12-05 19:31:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:01,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:01,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:01,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690512824] [2022-12-05 19:31:01,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690512824] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:01,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:01,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:31:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691319981] [2022-12-05 19:31:01,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:01,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:31:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:01,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:31:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:31:01,640 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:31:01,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 163 transitions, 842 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:01,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:01,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:31:01,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:01,927 INFO L130 PetriNetUnfolder]: 149/535 cut-off events. [2022-12-05 19:31:01,928 INFO L131 PetriNetUnfolder]: For 1790/1790 co-relation queries the response was YES. [2022-12-05 19:31:01,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1787 conditions, 535 events. 149/535 cut-off events. For 1790/1790 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2802 event pairs, 64 based on Foata normal form. 1/523 useless extension candidates. Maximal degree in co-relation 1755. Up to 260 conditions per place. [2022-12-05 19:31:01,931 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 80 selfloop transitions, 32 changer transitions 7/188 dead transitions. [2022-12-05 19:31:01,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 188 transitions, 1272 flow [2022-12-05 19:31:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:31:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:31:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1322 transitions. [2022-12-05 19:31:01,933 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6212406015037594 [2022-12-05 19:31:01,933 INFO L175 Difference]: Start difference. First operand has 183 places, 163 transitions, 842 flow. Second operand 16 states and 1322 transitions. [2022-12-05 19:31:01,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 188 transitions, 1272 flow [2022-12-05 19:31:01,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 188 transitions, 1160 flow, removed 24 selfloop flow, removed 13 redundant places. [2022-12-05 19:31:01,942 INFO L231 Difference]: Finished difference. Result has 186 places, 165 transitions, 854 flow [2022-12-05 19:31:01,942 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=854, PETRI_PLACES=186, PETRI_TRANSITIONS=165} [2022-12-05 19:31:01,944 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 67 predicate places. [2022-12-05 19:31:01,944 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 165 transitions, 854 flow [2022-12-05 19:31:01,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:01,944 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:01,944 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:01,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 19:31:01,948 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:01,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1093333078, now seen corresponding path program 9 times [2022-12-05 19:31:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:01,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029089535] [2022-12-05 19:31:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:01,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:02,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:02,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029089535] [2022-12-05 19:31:02,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029089535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:02,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:02,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:31:02,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304878758] [2022-12-05 19:31:02,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:02,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:31:02,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:02,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:31:02,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:31:02,384 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:31:02,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 165 transitions, 854 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:02,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:02,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:31:02,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:02,621 INFO L130 PetriNetUnfolder]: 152/550 cut-off events. [2022-12-05 19:31:02,621 INFO L131 PetriNetUnfolder]: For 1834/1834 co-relation queries the response was YES. [2022-12-05 19:31:02,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1811 conditions, 550 events. 152/550 cut-off events. For 1834/1834 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2883 event pairs, 52 based on Foata normal form. 1/540 useless extension candidates. Maximal degree in co-relation 1778. Up to 260 conditions per place. [2022-12-05 19:31:02,624 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 82 selfloop transitions, 33 changer transitions 6/190 dead transitions. [2022-12-05 19:31:02,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 190 transitions, 1275 flow [2022-12-05 19:31:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:31:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:31:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1324 transitions. [2022-12-05 19:31:02,628 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6221804511278195 [2022-12-05 19:31:02,628 INFO L175 Difference]: Start difference. First operand has 186 places, 165 transitions, 854 flow. Second operand 16 states and 1324 transitions. [2022-12-05 19:31:02,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 190 transitions, 1275 flow [2022-12-05 19:31:02,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 190 transitions, 1197 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-12-05 19:31:02,636 INFO L231 Difference]: Finished difference. Result has 189 places, 166 transitions, 878 flow [2022-12-05 19:31:02,637 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=878, PETRI_PLACES=189, PETRI_TRANSITIONS=166} [2022-12-05 19:31:02,637 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 70 predicate places. [2022-12-05 19:31:02,637 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 166 transitions, 878 flow [2022-12-05 19:31:02,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:02,638 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:02,638 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:02,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 19:31:02,638 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:02,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1575721086, now seen corresponding path program 10 times [2022-12-05 19:31:02,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:02,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129112319] [2022-12-05 19:31:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:02,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:03,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:03,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129112319] [2022-12-05 19:31:03,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129112319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:03,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:03,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:31:03,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629909479] [2022-12-05 19:31:03,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:03,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:31:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:03,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:31:03,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:31:03,059 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:31:03,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 166 transitions, 878 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:03,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:03,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:31:03,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:03,386 INFO L130 PetriNetUnfolder]: 154/555 cut-off events. [2022-12-05 19:31:03,386 INFO L131 PetriNetUnfolder]: For 2180/2180 co-relation queries the response was YES. [2022-12-05 19:31:03,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 555 events. 154/555 cut-off events. For 2180/2180 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2985 event pairs, 70 based on Foata normal form. 1/544 useless extension candidates. Maximal degree in co-relation 1842. Up to 246 conditions per place. [2022-12-05 19:31:03,389 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 79 selfloop transitions, 39 changer transitions 6/193 dead transitions. [2022-12-05 19:31:03,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 193 transitions, 1334 flow [2022-12-05 19:31:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-05 19:31:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-05 19:31:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1405 transitions. [2022-12-05 19:31:03,391 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6214064573197701 [2022-12-05 19:31:03,391 INFO L175 Difference]: Start difference. First operand has 189 places, 166 transitions, 878 flow. Second operand 17 states and 1405 transitions. [2022-12-05 19:31:03,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 193 transitions, 1334 flow [2022-12-05 19:31:03,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 193 transitions, 1242 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:03,400 INFO L231 Difference]: Finished difference. Result has 193 places, 168 transitions, 919 flow [2022-12-05 19:31:03,400 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=919, PETRI_PLACES=193, PETRI_TRANSITIONS=168} [2022-12-05 19:31:03,402 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 74 predicate places. [2022-12-05 19:31:03,402 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 168 transitions, 919 flow [2022-12-05 19:31:03,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:03,402 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:03,402 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:03,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-05 19:31:03,403 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:03,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1258317090, now seen corresponding path program 11 times [2022-12-05 19:31:03,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:03,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478294677] [2022-12-05 19:31:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:03,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:03,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:03,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478294677] [2022-12-05 19:31:03,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478294677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:03,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:03,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:31:03,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183633759] [2022-12-05 19:31:03,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:03,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:31:03,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:31:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:31:03,778 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:31:03,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 168 transitions, 919 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:03,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:03,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:31:03,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:04,057 INFO L130 PetriNetUnfolder]: 155/568 cut-off events. [2022-12-05 19:31:04,057 INFO L131 PetriNetUnfolder]: For 2552/2552 co-relation queries the response was YES. [2022-12-05 19:31:04,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 568 events. 155/568 cut-off events. For 2552/2552 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3096 event pairs, 54 based on Foata normal form. 1/557 useless extension candidates. Maximal degree in co-relation 1915. Up to 274 conditions per place. [2022-12-05 19:31:04,061 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 82 selfloop transitions, 35 changer transitions 7/193 dead transitions. [2022-12-05 19:31:04,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 193 transitions, 1390 flow [2022-12-05 19:31:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:31:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:31:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1324 transitions. [2022-12-05 19:31:04,063 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6221804511278195 [2022-12-05 19:31:04,063 INFO L175 Difference]: Start difference. First operand has 193 places, 168 transitions, 919 flow. Second operand 16 states and 1324 transitions. [2022-12-05 19:31:04,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 193 transitions, 1390 flow [2022-12-05 19:31:04,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 193 transitions, 1259 flow, removed 28 selfloop flow, removed 14 redundant places. [2022-12-05 19:31:04,076 INFO L231 Difference]: Finished difference. Result has 195 places, 170 transitions, 923 flow [2022-12-05 19:31:04,076 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=923, PETRI_PLACES=195, PETRI_TRANSITIONS=170} [2022-12-05 19:31:04,077 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 76 predicate places. [2022-12-05 19:31:04,077 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 170 transitions, 923 flow [2022-12-05 19:31:04,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:04,078 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:04,078 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:04,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-05 19:31:04,078 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:04,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:04,078 INFO L85 PathProgramCache]: Analyzing trace with hash -482314494, now seen corresponding path program 12 times [2022-12-05 19:31:04,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:04,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701514976] [2022-12-05 19:31:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:04,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701514976] [2022-12-05 19:31:04,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701514976] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:04,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:31:04,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-05 19:31:04,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704788210] [2022-12-05 19:31:04,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:04,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 19:31:04,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:04,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 19:31:04,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-12-05 19:31:04,525 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 133 [2022-12-05 19:31:04,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 170 transitions, 923 flow. Second operand has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:04,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:04,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 133 [2022-12-05 19:31:04,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:04,764 INFO L130 PetriNetUnfolder]: 158/568 cut-off events. [2022-12-05 19:31:04,764 INFO L131 PetriNetUnfolder]: For 2495/2495 co-relation queries the response was YES. [2022-12-05 19:31:04,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 568 events. 158/568 cut-off events. For 2495/2495 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3043 event pairs, 79 based on Foata normal form. 1/556 useless extension candidates. Maximal degree in co-relation 1917. Up to 274 conditions per place. [2022-12-05 19:31:04,768 INFO L137 encePairwiseOnDemand]: 116/133 looper letters, 84 selfloop transitions, 36 changer transitions 6/195 dead transitions. [2022-12-05 19:31:04,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 195 transitions, 1383 flow [2022-12-05 19:31:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-05 19:31:04,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-05 19:31:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1326 transitions. [2022-12-05 19:31:04,770 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6231203007518797 [2022-12-05 19:31:04,770 INFO L175 Difference]: Start difference. First operand has 195 places, 170 transitions, 923 flow. Second operand 16 states and 1326 transitions. [2022-12-05 19:31:04,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 195 transitions, 1383 flow [2022-12-05 19:31:04,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 195 transitions, 1296 flow, removed 15 selfloop flow, removed 12 redundant places. [2022-12-05 19:31:04,780 INFO L231 Difference]: Finished difference. Result has 198 places, 171 transitions, 948 flow [2022-12-05 19:31:04,780 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=948, PETRI_PLACES=198, PETRI_TRANSITIONS=171} [2022-12-05 19:31:04,780 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 79 predicate places. [2022-12-05 19:31:04,781 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 171 transitions, 948 flow [2022-12-05 19:31:04,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.3125) internal successors, (1269), 16 states have internal predecessors, (1269), 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) [2022-12-05 19:31:04,781 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:04,781 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:04,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 19:31:04,782 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:04,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:04,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1053292358, now seen corresponding path program 1 times [2022-12-05 19:31:04,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:04,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166200163] [2022-12-05 19:31:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:04,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:04,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:04,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166200163] [2022-12-05 19:31:04,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166200163] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:31:04,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409554444] [2022-12-05 19:31:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:04,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:31:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:31:04,871 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) [2022-12-05 19:31:04,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:31:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:04,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:31:04,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:31:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:31:05,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:31:05,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409554444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:31:05,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:31:05,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-12-05 19:31:05,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345237825] [2022-12-05 19:31:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:31:05,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 19:31:05,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:05,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 19:31:05,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-05 19:31:05,136 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 133 [2022-12-05 19:31:05,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 171 transitions, 948 flow. Second operand has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2022-12-05 19:31:05,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:05,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 133 [2022-12-05 19:31:05,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:05,212 INFO L130 PetriNetUnfolder]: 42/450 cut-off events. [2022-12-05 19:31:05,212 INFO L131 PetriNetUnfolder]: For 3325/3396 co-relation queries the response was YES. [2022-12-05 19:31:05,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 450 events. 42/450 cut-off events. For 3325/3396 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2356 event pairs, 7 based on Foata normal form. 42/485 useless extension candidates. Maximal degree in co-relation 1272. Up to 46 conditions per place. [2022-12-05 19:31:05,214 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 16 selfloop transitions, 7 changer transitions 34/168 dead transitions. [2022-12-05 19:31:05,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 168 transitions, 957 flow [2022-12-05 19:31:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 19:31:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 19:31:05,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2022-12-05 19:31:05,217 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2022-12-05 19:31:05,217 INFO L175 Difference]: Start difference. First operand has 198 places, 171 transitions, 948 flow. Second operand 4 states and 475 transitions. [2022-12-05 19:31:05,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 168 transitions, 957 flow [2022-12-05 19:31:05,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 168 transitions, 874 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-12-05 19:31:05,224 INFO L231 Difference]: Finished difference. Result has 183 places, 128 transitions, 512 flow [2022-12-05 19:31:05,224 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=512, PETRI_PLACES=183, PETRI_TRANSITIONS=128} [2022-12-05 19:31:05,225 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 64 predicate places. [2022-12-05 19:31:05,225 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 128 transitions, 512 flow [2022-12-05 19:31:05,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 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) [2022-12-05 19:31:05,225 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:05,226 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:05,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-05 19:31:05,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-05 19:31:05,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:05,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1013973553, now seen corresponding path program 1 times [2022-12-05 19:31:05,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:05,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22404167] [2022-12-05 19:31:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:05,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:05,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22404167] [2022-12-05 19:31:05,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22404167] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:31:05,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462369508] [2022-12-05 19:31:05,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:05,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:31:05,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:31:05,538 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) [2022-12-05 19:31:05,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:31:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:05,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-05 19:31:05,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:31:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:05,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:31:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:05,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462369508] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:31:05,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:31:05,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-12-05 19:31:05,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303323926] [2022-12-05 19:31:05,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:31:05,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-05 19:31:05,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-05 19:31:05,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-12-05 19:31:05,916 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 133 [2022-12-05 19:31:05,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 128 transitions, 512 flow. Second operand has 19 states, 19 states have (on average 102.63157894736842) internal successors, (1950), 19 states have internal predecessors, (1950), 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) [2022-12-05 19:31:05,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:05,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 133 [2022-12-05 19:31:05,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:06,118 INFO L130 PetriNetUnfolder]: 40/395 cut-off events. [2022-12-05 19:31:06,118 INFO L131 PetriNetUnfolder]: For 2544/2603 co-relation queries the response was YES. [2022-12-05 19:31:06,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 395 events. 40/395 cut-off events. For 2544/2603 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1522 event pairs, 11 based on Foata normal form. 12/400 useless extension candidates. Maximal degree in co-relation 1127. Up to 58 conditions per place. [2022-12-05 19:31:06,120 INFO L137 encePairwiseOnDemand]: 121/133 looper letters, 28 selfloop transitions, 11 changer transitions 6/142 dead transitions. [2022-12-05 19:31:06,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 142 transitions, 671 flow [2022-12-05 19:31:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-05 19:31:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-05 19:31:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1241 transitions. [2022-12-05 19:31:06,122 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7775689223057645 [2022-12-05 19:31:06,122 INFO L175 Difference]: Start difference. First operand has 183 places, 128 transitions, 512 flow. Second operand 12 states and 1241 transitions. [2022-12-05 19:31:06,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 142 transitions, 671 flow [2022-12-05 19:31:06,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 532 flow, removed 57 selfloop flow, removed 23 redundant places. [2022-12-05 19:31:06,126 INFO L231 Difference]: Finished difference. Result has 150 places, 132 transitions, 458 flow [2022-12-05 19:31:06,126 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=458, PETRI_PLACES=150, PETRI_TRANSITIONS=132} [2022-12-05 19:31:06,127 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 31 predicate places. [2022-12-05 19:31:06,127 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 132 transitions, 458 flow [2022-12-05 19:31:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 102.63157894736842) internal successors, (1950), 19 states have internal predecessors, (1950), 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) [2022-12-05 19:31:06,128 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:06,129 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:06,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 19:31:06,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-05 19:31:06,334 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:06,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1797971244, now seen corresponding path program 2 times [2022-12-05 19:31:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:06,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464761578] [2022-12-05 19:31:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:06,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:07,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:07,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:07,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464761578] [2022-12-05 19:31:07,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464761578] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:31:07,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871436722] [2022-12-05 19:31:07,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:31:07,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:31:07,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:31:07,124 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) [2022-12-05 19:31:07,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:31:07,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:31:07,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:31:07,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-05 19:31:07,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:31:07,995 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-05 19:31:07,996 INFO L350 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 23 treesize of output 10 [2022-12-05 19:31:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:08,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:31:08,232 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-05 19:31:08,232 INFO L350 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 25 treesize of output 16 [2022-12-05 19:31:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:08,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871436722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:31:08,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:31:08,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 18] total 52 [2022-12-05 19:31:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811394167] [2022-12-05 19:31:08,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:31:08,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-05 19:31:08,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-05 19:31:08,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=2220, Unknown=0, NotChecked=0, Total=2652 [2022-12-05 19:31:08,893 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 133 [2022-12-05 19:31:08,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 132 transitions, 458 flow. Second operand has 52 states, 52 states have (on average 57.34615384615385) internal successors, (2982), 52 states have internal predecessors, (2982), 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) [2022-12-05 19:31:08,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:08,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 133 [2022-12-05 19:31:08,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:13,515 INFO L130 PetriNetUnfolder]: 2608/6360 cut-off events. [2022-12-05 19:31:13,515 INFO L131 PetriNetUnfolder]: For 4087/4115 co-relation queries the response was YES. [2022-12-05 19:31:13,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15051 conditions, 6360 events. 2608/6360 cut-off events. For 4087/4115 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 55607 event pairs, 305 based on Foata normal form. 24/6003 useless extension candidates. Maximal degree in co-relation 15030. Up to 768 conditions per place. [2022-12-05 19:31:13,543 INFO L137 encePairwiseOnDemand]: 97/133 looper letters, 449 selfloop transitions, 193 changer transitions 0/694 dead transitions. [2022-12-05 19:31:13,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 694 transitions, 3826 flow [2022-12-05 19:31:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-05 19:31:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-12-05 19:31:13,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 4631 transitions. [2022-12-05 19:31:13,558 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4642606516290727 [2022-12-05 19:31:13,558 INFO L175 Difference]: Start difference. First operand has 150 places, 132 transitions, 458 flow. Second operand 75 states and 4631 transitions. [2022-12-05 19:31:13,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 694 transitions, 3826 flow [2022-12-05 19:31:13,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 694 transitions, 3695 flow, removed 61 selfloop flow, removed 6 redundant places. [2022-12-05 19:31:13,569 INFO L231 Difference]: Finished difference. Result has 251 places, 345 transitions, 2347 flow [2022-12-05 19:31:13,569 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=2347, PETRI_PLACES=251, PETRI_TRANSITIONS=345} [2022-12-05 19:31:13,569 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 132 predicate places. [2022-12-05 19:31:13,570 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 345 transitions, 2347 flow [2022-12-05 19:31:13,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 57.34615384615385) internal successors, (2982), 52 states have internal predecessors, (2982), 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) [2022-12-05 19:31:13,571 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:13,571 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:13,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 19:31:13,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:31:13,791 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:13,792 INFO L85 PathProgramCache]: Analyzing trace with hash 192114128, now seen corresponding path program 3 times [2022-12-05 19:31:13,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:13,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163886827] [2022-12-05 19:31:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:13,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:14,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163886827] [2022-12-05 19:31:14,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163886827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:31:14,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602979578] [2022-12-05 19:31:14,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 19:31:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:31:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:31:14,561 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) [2022-12-05 19:31:14,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:31:14,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 19:31:14,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:31:14,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-05 19:31:14,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:31:14,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-05 19:31:14,946 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 19:31:14,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-05 19:31:15,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-05 19:31:15,263 INFO L350 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 23 treesize of output 7 [2022-12-05 19:31:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-05 19:31:15,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:31:15,465 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:31:15,465 INFO L350 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 45 treesize of output 41 [2022-12-05 19:31:15,468 INFO L350 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 24 treesize of output 18 [2022-12-05 19:31:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-05 19:31:16,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602979578] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:31:16,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:31:16,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 16] total 46 [2022-12-05 19:31:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568859926] [2022-12-05 19:31:16,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:31:16,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-05 19:31:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-05 19:31:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1894, Unknown=4, NotChecked=0, Total=2070 [2022-12-05 19:31:16,085 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 133 [2022-12-05 19:31:16,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 345 transitions, 2347 flow. Second operand has 46 states, 46 states have (on average 56.369565217391305) internal successors, (2593), 46 states have internal predecessors, (2593), 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) [2022-12-05 19:31:16,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:16,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 133 [2022-12-05 19:31:16,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:19,336 INFO L130 PetriNetUnfolder]: 2037/6328 cut-off events. [2022-12-05 19:31:19,336 INFO L131 PetriNetUnfolder]: For 31003/31444 co-relation queries the response was YES. [2022-12-05 19:31:19,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18750 conditions, 6328 events. 2037/6328 cut-off events. For 31003/31444 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 61478 event pairs, 409 based on Foata normal form. 253/6223 useless extension candidates. Maximal degree in co-relation 18696. Up to 1035 conditions per place. [2022-12-05 19:31:19,384 INFO L137 encePairwiseOnDemand]: 108/133 looper letters, 322 selfloop transitions, 138 changer transitions 0/543 dead transitions. [2022-12-05 19:31:19,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 543 transitions, 4702 flow [2022-12-05 19:31:19,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-05 19:31:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-05 19:31:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2467 transitions. [2022-12-05 19:31:19,388 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4313691204756076 [2022-12-05 19:31:19,388 INFO L175 Difference]: Start difference. First operand has 251 places, 345 transitions, 2347 flow. Second operand 43 states and 2467 transitions. [2022-12-05 19:31:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 543 transitions, 4702 flow [2022-12-05 19:31:19,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 543 transitions, 4145 flow, removed 259 selfloop flow, removed 16 redundant places. [2022-12-05 19:31:19,554 INFO L231 Difference]: Finished difference. Result has 284 places, 392 transitions, 2794 flow [2022-12-05 19:31:19,554 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2794, PETRI_PLACES=284, PETRI_TRANSITIONS=392} [2022-12-05 19:31:19,554 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 165 predicate places. [2022-12-05 19:31:19,555 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 392 transitions, 2794 flow [2022-12-05 19:31:19,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 56.369565217391305) internal successors, (2593), 46 states have internal predecessors, (2593), 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) [2022-12-05 19:31:19,556 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:31:19,556 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:31:19,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-05 19:31:19,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-05 19:31:19,760 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:31:19,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:31:19,761 INFO L85 PathProgramCache]: Analyzing trace with hash -614796136, now seen corresponding path program 1 times [2022-12-05 19:31:19,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:31:19,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396286318] [2022-12-05 19:31:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:31:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:31:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396286318] [2022-12-05 19:31:21,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396286318] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:31:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752558434] [2022-12-05 19:31:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:31:21,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:31:21,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:31:21,712 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) [2022-12-05 19:31:21,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 19:31:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:31:21,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 78 conjunts are in the unsatisfiable core [2022-12-05 19:31:21,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:31:23,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:31:23,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-05 19:31:24,117 INFO L321 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-12-05 19:31:24,117 INFO L350 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 24 treesize of output 10 [2022-12-05 19:31:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:24,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:31:27,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:31:27,849 INFO L350 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 61 treesize of output 57 [2022-12-05 19:31:27,852 INFO L350 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 40 treesize of output 34 [2022-12-05 19:31:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:31:30,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752558434] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:31:30,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:31:30,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 42, 40] total 110 [2022-12-05 19:31:30,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989391268] [2022-12-05 19:31:30,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:31:30,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2022-12-05 19:31:30,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:31:30,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2022-12-05 19:31:30,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=11091, Unknown=15, NotChecked=0, Total=11990 [2022-12-05 19:31:30,459 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 133 [2022-12-05 19:31:30,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 392 transitions, 2794 flow. Second operand has 110 states, 110 states have (on average 41.054545454545455) internal successors, (4516), 110 states have internal predecessors, (4516), 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) [2022-12-05 19:31:30,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:31:30,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 133 [2022-12-05 19:31:30,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:31:32,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:31:34,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:31:40,727 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_299 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) (.cse1 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0)))) (and (or .cse0 .cse1 (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) .cse2) (or .cse0 .cse1 (< (+ |c_thread1Thread1of1ForFork0_#t~post1#1| 1) c_~N~0) .cse2))) is different from false [2022-12-05 19:31:46,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:31:48,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:31:50,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:31:56,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-05 19:31:57,573 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x~0 4294967296))) (let ((.cse0 (= (mod (+ c_~C~0 c_~y~0) 4294967296) .cse3)) (.cse2 (= c_~s~0 c_~N~0)) (.cse1 (not (= |c_thread2Thread1of1ForFork1_~j~0#1| 0)))) (and (or (and .cse0 (forall ((v_ArrVal_299 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_299) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (not (<= 0 c_~q_back~0)) (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (not (< c_~q_back~0 c_~n~0))) (or .cse1 (and .cse2 (= .cse3 (mod c_~y~0 4294967296)))) (or (and .cse0 .cse2) .cse1)))) is different from false [2022-12-05 19:32:00,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:32:02,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:32:05,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:32:10,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:32:31,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:32:35,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:36,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:38,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:41,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:44,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:47,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:49,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:51,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:54,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:32:56,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:00,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:33:04,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:06,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:08,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:17,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:19,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:21,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:23,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:25,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:27,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:38,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:33:43,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:34:09,151 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 69 DAG size of output: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:34:24,171 WARN L233 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 68 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:34:34,673 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 77 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:34:49,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-05 19:34:51,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-05 19:34:53,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-05 19:34:55,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:35:11,380 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 60 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:35:16,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:35:21,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:35:32,115 WARN L233 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 62 DAG size of output: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:35:42,849 WARN L233 SmtUtils]: Spent 10.17s on a formula simplification. DAG size of input: 64 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:35:43,221 INFO L130 PetriNetUnfolder]: 21510/42970 cut-off events. [2022-12-05 19:35:43,222 INFO L131 PetriNetUnfolder]: For 203746/203762 co-relation queries the response was YES. [2022-12-05 19:35:43,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139407 conditions, 42970 events. 21510/42970 cut-off events. For 203746/203762 co-relation queries the response was YES. Maximal size of possible extension queue 2024. Compared 449396 event pairs, 833 based on Foata normal form. 109/42970 useless extension candidates. Maximal degree in co-relation 139347. Up to 6987 conditions per place. [2022-12-05 19:35:43,751 INFO L137 encePairwiseOnDemand]: 81/133 looper letters, 1250 selfloop transitions, 1988 changer transitions 334/3604 dead transitions. [2022-12-05 19:35:43,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 3604 transitions, 30015 flow [2022-12-05 19:35:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 321 states. [2022-12-05 19:35:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2022-12-05 19:35:43,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 14295 transitions. [2022-12-05 19:35:43,769 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3348324081231115 [2022-12-05 19:35:43,769 INFO L175 Difference]: Start difference. First operand has 284 places, 392 transitions, 2794 flow. Second operand 321 states and 14295 transitions. [2022-12-05 19:35:43,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 3604 transitions, 30015 flow [2022-12-05 19:35:45,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 3604 transitions, 29574 flow, removed 168 selfloop flow, removed 34 redundant places. [2022-12-05 19:35:45,473 INFO L231 Difference]: Finished difference. Result has 664 places, 2413 transitions, 22323 flow [2022-12-05 19:35:45,474 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=321, PETRI_FLOW=22323, PETRI_PLACES=664, PETRI_TRANSITIONS=2413} [2022-12-05 19:35:45,474 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 545 predicate places. [2022-12-05 19:35:45,474 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 2413 transitions, 22323 flow [2022-12-05 19:35:45,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 41.054545454545455) internal successors, (4516), 110 states have internal predecessors, (4516), 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) [2022-12-05 19:35:45,476 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:35:45,476 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:35:45,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-05 19:35:45,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:35:45,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:35:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:35:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash 250326770, now seen corresponding path program 2 times [2022-12-05 19:35:45,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:35:45,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708773362] [2022-12-05 19:35:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:35:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:35:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:35:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:35:48,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:35:48,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708773362] [2022-12-05 19:35:48,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708773362] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:35:48,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641839205] [2022-12-05 19:35:48,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 19:35:48,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:35:48,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:35:48,217 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) [2022-12-05 19:35:48,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 19:35:48,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:35:48,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:35:48,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 85 conjunts are in the unsatisfiable core [2022-12-05 19:35:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:35:49,490 INFO L350 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 11 [2022-12-05 19:35:49,711 INFO L350 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 11 [2022-12-05 19:35:50,239 INFO L350 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 6 treesize of output 5 [2022-12-05 19:35:50,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:35:50,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-05 19:35:51,333 INFO L350 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 25 treesize of output 7 [2022-12-05 19:35:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:35:51,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:35:55,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:35:55,986 INFO L350 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 58 [2022-12-05 19:35:55,998 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:35:55,998 INFO L350 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 178 treesize of output 166 [2022-12-05 19:35:56,005 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:35:56,005 INFO L350 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 90 treesize of output 84 [2022-12-05 19:35:56,024 INFO L350 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 118 treesize of output 94 [2022-12-05 19:35:56,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:35:56,112 INFO L350 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 41 [2022-12-05 19:35:56,117 INFO L350 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 32 treesize of output 24 [2022-12-05 19:35:56,122 INFO L350 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 10 treesize of output 4 [2022-12-05 19:35:56,131 INFO L321 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2022-12-05 19:35:56,131 INFO L350 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 1 [2022-12-05 19:35:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:35:57,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641839205] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:35:57,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:35:57,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 43, 44] total 117 [2022-12-05 19:35:57,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932259886] [2022-12-05 19:35:57,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:35:57,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 117 states [2022-12-05 19:35:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:35:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2022-12-05 19:35:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=931, Invalid=12609, Unknown=32, NotChecked=0, Total=13572 [2022-12-05 19:35:57,889 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 133 [2022-12-05 19:35:57,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 2413 transitions, 22323 flow. Second operand has 117 states, 117 states have (on average 38.99145299145299) internal successors, (4562), 117 states have internal predecessors, (4562), 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) [2022-12-05 19:35:57,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:35:57,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 133 [2022-12-05 19:35:57,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:36:42,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:36:52,599 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 226 DAG size of output: 211 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:37:36,341 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 180 DAG size of output: 162 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:38:04,743 INFO L130 PetriNetUnfolder]: 25994/50764 cut-off events. [2022-12-05 19:38:04,744 INFO L131 PetriNetUnfolder]: For 875550/875687 co-relation queries the response was YES. [2022-12-05 19:38:05,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298526 conditions, 50764 events. 25994/50764 cut-off events. For 875550/875687 co-relation queries the response was YES. Maximal size of possible extension queue 2466. Compared 536358 event pairs, 2016 based on Foata normal form. 18/50531 useless extension candidates. Maximal degree in co-relation 298380. Up to 20374 conditions per place. [2022-12-05 19:38:06,365 INFO L137 encePairwiseOnDemand]: 83/133 looper letters, 1274 selfloop transitions, 2929 changer transitions 19/4254 dead transitions. [2022-12-05 19:38:06,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 4254 transitions, 49083 flow [2022-12-05 19:38:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-12-05 19:38:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2022-12-05 19:38:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 5904 transitions. [2022-12-05 19:38:06,374 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.31261251720851424 [2022-12-05 19:38:06,374 INFO L175 Difference]: Start difference. First operand has 664 places, 2413 transitions, 22323 flow. Second operand 142 states and 5904 transitions. [2022-12-05 19:38:06,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 4254 transitions, 49083 flow [2022-12-05 19:38:16,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 4254 transitions, 44099 flow, removed 2227 selfloop flow, removed 78 redundant places. [2022-12-05 19:38:16,753 INFO L231 Difference]: Finished difference. Result has 729 places, 3773 transitions, 41200 flow [2022-12-05 19:38:16,755 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=19644, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1701, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=142, PETRI_FLOW=41200, PETRI_PLACES=729, PETRI_TRANSITIONS=3773} [2022-12-05 19:38:16,756 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 610 predicate places. [2022-12-05 19:38:16,756 INFO L495 AbstractCegarLoop]: Abstraction has has 729 places, 3773 transitions, 41200 flow [2022-12-05 19:38:16,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 117 states, 117 states have (on average 38.99145299145299) internal successors, (4562), 117 states have internal predecessors, (4562), 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) [2022-12-05 19:38:16,757 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:38:16,757 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:38:16,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-05 19:38:16,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:38:16,962 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:38:16,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:38:16,962 INFO L85 PathProgramCache]: Analyzing trace with hash 172912310, now seen corresponding path program 3 times [2022-12-05 19:38:16,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:38:16,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428096739] [2022-12-05 19:38:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:38:16,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:38:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:38:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:38:19,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:38:19,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428096739] [2022-12-05 19:38:19,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428096739] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:38:19,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711939016] [2022-12-05 19:38:19,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 19:38:19,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:38:19,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:38:19,801 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) [2022-12-05 19:38:19,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 19:38:20,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 19:38:20,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:38:20,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-05 19:38:20,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:38:20,495 INFO L350 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 5 treesize of output 3 [2022-12-05 19:38:21,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:38:21,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-05 19:38:21,866 INFO L350 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 23 treesize of output 7 [2022-12-05 19:38:22,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-05 19:38:22,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:38:23,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:38:23,928 INFO L350 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 [2022-12-05 19:38:23,933 INFO L350 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 38 treesize of output 32 [2022-12-05 19:38:25,192 INFO L350 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 6 treesize of output 4 [2022-12-05 19:38:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-05 19:38:26,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711939016] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:38:26,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:38:26,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 31, 31] total 95 [2022-12-05 19:38:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733447817] [2022-12-05 19:38:26,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:38:26,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-12-05 19:38:26,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:38:26,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-12-05 19:38:26,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=8463, Unknown=3, NotChecked=0, Total=8930 [2022-12-05 19:38:26,186 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 133 [2022-12-05 19:38:26,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 3773 transitions, 41200 flow. Second operand has 95 states, 95 states have (on average 39.34736842105263) internal successors, (3738), 95 states have internal predecessors, (3738), 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) [2022-12-05 19:38:26,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:38:26,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 133 [2022-12-05 19:38:26,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:39:16,100 INFO L130 PetriNetUnfolder]: 27930/54218 cut-off events. [2022-12-05 19:39:16,100 INFO L131 PetriNetUnfolder]: For 986543/986700 co-relation queries the response was YES. [2022-12-05 19:39:17,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344912 conditions, 54218 events. 27930/54218 cut-off events. For 986543/986700 co-relation queries the response was YES. Maximal size of possible extension queue 2640. Compared 576952 event pairs, 3404 based on Foata normal form. 35/53925 useless extension candidates. Maximal degree in co-relation 344766. Up to 28170 conditions per place. [2022-12-05 19:39:17,656 INFO L137 encePairwiseOnDemand]: 88/133 looper letters, 2784 selfloop transitions, 1797 changer transitions 9/4622 dead transitions. [2022-12-05 19:39:17,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 812 places, 4622 transitions, 60310 flow [2022-12-05 19:39:17,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-12-05 19:39:17,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-12-05 19:39:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 3753 transitions. [2022-12-05 19:39:17,666 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.31353383458646616 [2022-12-05 19:39:17,666 INFO L175 Difference]: Start difference. First operand has 729 places, 3773 transitions, 41200 flow. Second operand 90 states and 3753 transitions. [2022-12-05 19:39:17,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 812 places, 4622 transitions, 60310 flow [2022-12-05 19:39:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 763 places, 4622 transitions, 59930 flow, removed 136 selfloop flow, removed 49 redundant places. [2022-12-05 19:39:31,416 INFO L231 Difference]: Finished difference. Result has 793 places, 4128 transitions, 51035 flow [2022-12-05 19:39:31,419 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=40860, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=51035, PETRI_PLACES=793, PETRI_TRANSITIONS=4128} [2022-12-05 19:39:31,419 INFO L294 CegarLoopForPetriNet]: 119 programPoint places, 674 predicate places. [2022-12-05 19:39:31,419 INFO L495 AbstractCegarLoop]: Abstraction has has 793 places, 4128 transitions, 51035 flow [2022-12-05 19:39:31,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 39.34736842105263) internal successors, (3738), 95 states have internal predecessors, (3738), 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) [2022-12-05 19:39:31,420 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:39:31,420 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:39:31,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 19:39:31,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:39:31,625 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 19:39:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:39:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1219469128, now seen corresponding path program 4 times [2022-12-05 19:39:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:39:31,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873075623] [2022-12-05 19:39:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:39:31,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:39:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:39:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:39:33,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:39:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873075623] [2022-12-05 19:39:33,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873075623] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:39:33,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440105887] [2022-12-05 19:39:33,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-05 19:39:33,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:39:33,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:39:33,465 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) [2022-12-05 19:39:33,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 19:39:33,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-05 19:39:33,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:39:33,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-05 19:39:33,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:39:34,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 19:39:34,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-05 19:39:35,972 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-05 19:39:35,973 INFO L350 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 23 treesize of output 10 [2022-12-05 19:39:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:39:36,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:39:38,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 19:39:38,067 INFO L350 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 67 treesize of output 63 [2022-12-05 19:39:38,070 INFO L350 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 46 treesize of output 40 [2022-12-05 19:39:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:39:41,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440105887] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:39:41,306 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:39:41,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 103 [2022-12-05 19:39:41,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498510120] [2022-12-05 19:39:41,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:39:41,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-12-05 19:39:41,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:39:41,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-12-05 19:39:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=9824, Unknown=4, NotChecked=0, Total=10506 [2022-12-05 19:39:41,311 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 133 [2022-12-05 19:39:41,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 793 places, 4128 transitions, 51035 flow. Second operand has 103 states, 103 states have (on average 41.1747572815534) internal successors, (4241), 103 states have internal predecessors, (4241), 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) [2022-12-05 19:39:41,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:39:41,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 133 [2022-12-05 19:39:41,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:39:48,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:40:03,030 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 126 DAG size of output: 90 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:40:05,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:40:13,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:40:14,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:40:21,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:40:22,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:40:37,869 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 128 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-05 19:40:42,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-05 19:41:02,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-05 19:41:54,941 INFO L130 PetriNetUnfolder]: 30042/58842 cut-off events. [2022-12-05 19:41:54,941 INFO L131 PetriNetUnfolder]: For 1190959/1191134 co-relation queries the response was YES.