/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 20:54:26,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 20:54:26,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 20:54:26,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 20:54:26,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 20:54:26,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 20:54:26,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 20:54:26,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 20:54:26,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 20:54:26,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 20:54:26,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 20:54:26,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 20:54:26,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 20:54:26,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 20:54:26,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 20:54:26,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 20:54:26,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 20:54:26,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 20:54:26,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 20:54:26,478 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 20:54:26,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 20:54:26,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 20:54:26,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 20:54:26,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 20:54:26,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 20:54:26,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 20:54:26,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 20:54:26,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 20:54:26,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 20:54:26,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 20:54:26,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 20:54:26,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 20:54:26,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 20:54:26,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 20:54:26,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 20:54:26,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 20:54:26,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 20:54:26,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 20:54:26,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 20:54:26,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 20:54:26,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 20:54:26,505 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-SemanticLbe.epf [2022-12-12 20:54:26,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 20:54:26,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 20:54:26,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 20:54:26,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 20:54:26,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 20:54:26,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 20:54:26,534 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 20:54:26,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 20:54:26,534 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 20:54:26,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 20:54:26,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 20:54:26,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 20:54:26,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:54:26,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 20:54:26,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 20:54:26,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 20:54:26,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 20:54:26,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 20:54:26,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 20:54:26,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 20:54:26,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 20:54:26,810 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 20:54:26,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-5.wvr.c [2022-12-12 20:54:27,747 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 20:54:27,915 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 20:54:27,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-5.wvr.c [2022-12-12 20:54:27,922 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9ba8199/4f098bcb61574375a3eeeb6c4fa8cbe4/FLAG2b6c8c198 [2022-12-12 20:54:27,931 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d9ba8199/4f098bcb61574375a3eeeb6c4fa8cbe4 [2022-12-12 20:54:27,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 20:54:27,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 20:54:27,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 20:54:27,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 20:54:27,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 20:54:27,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:54:27" (1/1) ... [2022-12-12 20:54:27,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c69c313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:27, skipping insertion in model container [2022-12-12 20:54:27,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 08:54:27" (1/1) ... [2022-12-12 20:54:27,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 20:54:27,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 20:54:28,094 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/unroll-5.wvr.c[2644,2657] [2022-12-12 20:54:28,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:54:28,117 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 20:54:28,146 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/unroll-5.wvr.c[2644,2657] [2022-12-12 20:54:28,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 20:54:28,163 INFO L208 MainTranslator]: Completed translation [2022-12-12 20:54:28,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28 WrapperNode [2022-12-12 20:54:28,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 20:54:28,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 20:54:28,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 20:54:28,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 20:54:28,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,215 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 164 [2022-12-12 20:54:28,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 20:54:28,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 20:54:28,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 20:54:28,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 20:54:28,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,248 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 20:54:28,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 20:54:28,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 20:54:28,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 20:54:28,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (1/1) ... [2022-12-12 20:54:28,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 20:54:28,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:54:28,280 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) [2022-12-12 20:54:28,299 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 [2022-12-12 20:54:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 20:54:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 20:54:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 20:54:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 20:54:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 20:54:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 20:54:28,314 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 20:54:28,392 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 20:54:28,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 20:54:28,695 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 20:54:28,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 20:54:28,702 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 20:54:28,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:54:28 BoogieIcfgContainer [2022-12-12 20:54:28,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 20:54:28,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 20:54:28,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 20:54:28,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 20:54:28,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 08:54:27" (1/3) ... [2022-12-12 20:54:28,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6251f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:54:28, skipping insertion in model container [2022-12-12 20:54:28,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 08:54:28" (2/3) ... [2022-12-12 20:54:28,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b6251f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 08:54:28, skipping insertion in model container [2022-12-12 20:54:28,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 08:54:28" (3/3) ... [2022-12-12 20:54:28,710 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2022-12-12 20:54:28,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 20:54:28,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 20:54:28,724 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 20:54:28,788 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 20:54:28,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 193 transitions, 402 flow [2022-12-12 20:54:28,928 INFO L130 PetriNetUnfolder]: 17/191 cut-off events. [2022-12-12 20:54:28,928 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 20:54:28,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 17/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 163 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-12-12 20:54:28,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 193 transitions, 402 flow [2022-12-12 20:54:28,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 183 transitions, 378 flow [2022-12-12 20:54:28,940 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 20:54:28,961 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 183 transitions, 378 flow [2022-12-12 20:54:28,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 183 transitions, 378 flow [2022-12-12 20:54:29,012 INFO L130 PetriNetUnfolder]: 17/183 cut-off events. [2022-12-12 20:54:29,012 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 20:54:29,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 17/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-12-12 20:54:29,026 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 183 transitions, 378 flow [2022-12-12 20:54:29,026 INFO L226 LiptonReduction]: Number of co-enabled transitions 3892 [2022-12-12 20:54:33,518 INFO L241 LiptonReduction]: Total number of compositions: 166 [2022-12-12 20:54:33,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 20:54:33,533 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;@69d09d4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 20:54:33,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 20:54:33,536 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2022-12-12 20:54:33,537 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 20:54:33,537 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:33,537 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:33,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:33,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1379268505, now seen corresponding path program 1 times [2022-12-12 20:54:33,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:33,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917897291] [2022-12-12 20:54:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:54:33,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:33,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917897291] [2022-12-12 20:54:33,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917897291] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:54:33,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:54:33,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 20:54:33,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826321021] [2022-12-12 20:54:33,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:54:33,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 20:54:33,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 20:54:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 20:54:33,910 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-12 20:54:33,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-12 20:54:33,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:33,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-12 20:54:33,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:33,965 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2022-12-12 20:54:33,965 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-12 20:54:33,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 80 events. 45/80 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 181 event pairs, 18 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 120. Up to 76 conditions per place. [2022-12-12 20:54:33,969 INFO L137 encePairwiseOnDemand]: 14/17 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2022-12-12 20:54:33,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2022-12-12 20:54:33,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:54:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:54:33,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2022-12-12 20:54:33,977 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2022-12-12 20:54:33,980 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2022-12-12 20:54:33,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 80 flow [2022-12-12 20:54:33,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 80 flow [2022-12-12 20:54:33,983 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 80 flow [2022-12-12 20:54:33,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-12-12 20:54:33,983 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:33,984 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:33,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 20:54:33,984 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:33,985 INFO L85 PathProgramCache]: Analyzing trace with hash 146045095, now seen corresponding path program 1 times [2022-12-12 20:54:33,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:33,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171447278] [2022-12-12 20:54:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:33,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:34,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:34,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171447278] [2022-12-12 20:54:34,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171447278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:54:34,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:54:34,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 20:54:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069149242] [2022-12-12 20:54:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:54:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 20:54:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 20:54:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 20:54:34,193 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-12 20:54:34,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-12 20:54:34,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:34,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-12 20:54:34,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:34,240 INFO L130 PetriNetUnfolder]: 66/117 cut-off events. [2022-12-12 20:54:34,241 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-12 20:54:34,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 117 events. 66/117 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 320 event pairs, 9 based on Foata normal form. 1/79 useless extension candidates. Maximal degree in co-relation 263. Up to 114 conditions per place. [2022-12-12 20:54:34,245 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 22 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2022-12-12 20:54:34,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 181 flow [2022-12-12 20:54:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 20:54:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 20:54:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-12-12 20:54:34,250 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2022-12-12 20:54:34,250 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 4 predicate places. [2022-12-12 20:54:34,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 28 transitions, 181 flow [2022-12-12 20:54:34,251 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 27 transitions, 172 flow [2022-12-12 20:54:34,251 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 27 transitions, 172 flow [2022-12-12 20:54:34,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-12-12 20:54:34,252 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:34,252 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:34,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 20:54:34,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:34,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:34,254 INFO L85 PathProgramCache]: Analyzing trace with hash 224812854, now seen corresponding path program 1 times [2022-12-12 20:54:34,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:34,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212342327] [2022-12-12 20:54:34,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:34,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:34,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:34,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212342327] [2022-12-12 20:54:34,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212342327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:54:34,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:54:34,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 20:54:34,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628083938] [2022-12-12 20:54:34,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:54:34,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 20:54:34,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 20:54:34,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 20:54:34,424 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 20:54:34,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 27 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-12 20:54:34,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:34,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 20:54:34,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:34,514 INFO L130 PetriNetUnfolder]: 85/168 cut-off events. [2022-12-12 20:54:34,514 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-12-12 20:54:34,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 168 events. 85/168 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 559 event pairs, 8 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 518. Up to 142 conditions per place. [2022-12-12 20:54:34,515 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 37 selfloop transitions, 4 changer transitions 12/53 dead transitions. [2022-12-12 20:54:34,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 53 transitions, 441 flow [2022-12-12 20:54:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:54:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:54:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-12-12 20:54:34,517 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-12-12 20:54:34,517 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 8 predicate places. [2022-12-12 20:54:34,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 53 transitions, 441 flow [2022-12-12 20:54:34,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 41 transitions, 340 flow [2022-12-12 20:54:34,519 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 41 transitions, 340 flow [2022-12-12 20:54:34,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-12-12 20:54:34,519 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:34,519 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:34,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 20:54:34,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:34,520 INFO L85 PathProgramCache]: Analyzing trace with hash 607551670, now seen corresponding path program 1 times [2022-12-12 20:54:34,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:34,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917977710] [2022-12-12 20:54:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:34,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:34,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:34,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:34,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917977710] [2022-12-12 20:54:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917977710] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:54:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:54:34,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:54:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027944889] [2022-12-12 20:54:34,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:54:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:54:34,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:54:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:54:34,610 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:54:34,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 41 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:34,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:34,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:54:34,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:34,678 INFO L130 PetriNetUnfolder]: 82/157 cut-off events. [2022-12-12 20:54:34,678 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-12-12 20:54:34,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 157 events. 82/157 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 459 event pairs, 8 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 607. Up to 135 conditions per place. [2022-12-12 20:54:34,680 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 48 selfloop transitions, 6 changer transitions 4/59 dead transitions. [2022-12-12 20:54:34,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 59 transitions, 609 flow [2022-12-12 20:54:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:54:34,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:54:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 34 transitions. [2022-12-12 20:54:34,681 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-12 20:54:34,683 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2022-12-12 20:54:34,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 59 transitions, 609 flow [2022-12-12 20:54:34,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 55 transitions, 569 flow [2022-12-12 20:54:34,684 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 55 transitions, 569 flow [2022-12-12 20:54:34,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:34,684 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:34,684 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:34,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 20:54:34,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:34,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:34,685 INFO L85 PathProgramCache]: Analyzing trace with hash -435084606, now seen corresponding path program 2 times [2022-12-12 20:54:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:34,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010145030] [2022-12-12 20:54:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:34,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:34,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010145030] [2022-12-12 20:54:34,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010145030] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:54:34,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738695987] [2022-12-12 20:54:34,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:54:34,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:34,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:54:34,789 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) [2022-12-12 20:54:34,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 20:54:34,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:54:34,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:54:34,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:54:34,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:54:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:34,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:54:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:35,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738695987] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-12 20:54:35,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-12 20:54:35,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2022-12-12 20:54:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142714999] [2022-12-12 20:54:35,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:54:35,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:54:35,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:35,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:54:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 20:54:35,026 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:54:35,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 55 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:35,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:35,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:54:35,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:35,090 INFO L130 PetriNetUnfolder]: 86/163 cut-off events. [2022-12-12 20:54:35,091 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2022-12-12 20:54:35,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 163 events. 86/163 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 466 event pairs, 8 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 772. Up to 143 conditions per place. [2022-12-12 20:54:35,092 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 55 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2022-12-12 20:54:35,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 760 flow [2022-12-12 20:54:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:54:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:54:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 33 transitions. [2022-12-12 20:54:35,094 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2022-12-12 20:54:35,095 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 13 predicate places. [2022-12-12 20:54:35,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 62 transitions, 760 flow [2022-12-12 20:54:35,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 62 transitions, 760 flow [2022-12-12 20:54:35,097 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 62 transitions, 760 flow [2022-12-12 20:54:35,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:35,097 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:35,098 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:35,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 20:54:35,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:35,303 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1997303806, now seen corresponding path program 2 times [2022-12-12 20:54:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:35,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533063616] [2022-12-12 20:54:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:35,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533063616] [2022-12-12 20:54:35,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533063616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:54:35,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:54:35,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:54:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633013166] [2022-12-12 20:54:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:54:35,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:54:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:54:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:54:35,386 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:54:35,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 62 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:35,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:35,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:54:35,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:35,443 INFO L130 PetriNetUnfolder]: 92/173 cut-off events. [2022-12-12 20:54:35,443 INFO L131 PetriNetUnfolder]: For 266/266 co-relation queries the response was YES. [2022-12-12 20:54:35,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 173 events. 92/173 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 492 event pairs, 8 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 968. Up to 153 conditions per place. [2022-12-12 20:54:35,445 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 58 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2022-12-12 20:54:35,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 67 transitions, 940 flow [2022-12-12 20:54:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:54:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:54:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-12-12 20:54:35,445 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2022-12-12 20:54:35,446 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 16 predicate places. [2022-12-12 20:54:35,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 67 transitions, 940 flow [2022-12-12 20:54:35,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 67 transitions, 940 flow [2022-12-12 20:54:35,447 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 67 transitions, 940 flow [2022-12-12 20:54:35,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:35,448 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:35,448 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:35,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 20:54:35,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:35,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:35,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1777531474, now seen corresponding path program 3 times [2022-12-12 20:54:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:35,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910743203] [2022-12-12 20:54:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:35,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:35,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:35,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910743203] [2022-12-12 20:54:35,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910743203] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:54:35,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190836055] [2022-12-12 20:54:35,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:54:35,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:35,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:54:35,532 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) [2022-12-12 20:54:35,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 20:54:35,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:54:35,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:54:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:54:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:54:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:35,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:54:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:35,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190836055] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:54:35,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:54:35,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-12-12 20:54:35,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204325465] [2022-12-12 20:54:35,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:54:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 20:54:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 20:54:35,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 20:54:35,679 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 20:54:35,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 67 transitions, 940 flow. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-12-12 20:54:35,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:35,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 20:54:35,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:35,829 INFO L130 PetriNetUnfolder]: 110/203 cut-off events. [2022-12-12 20:54:35,829 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2022-12-12 20:54:35,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 203 events. 110/203 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 607 event pairs, 8 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 1314. Up to 181 conditions per place. [2022-12-12 20:54:35,831 INFO L137 encePairwiseOnDemand]: 10/17 looper letters, 63 selfloop transitions, 21 changer transitions 0/84 dead transitions. [2022-12-12 20:54:35,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 84 transitions, 1332 flow [2022-12-12 20:54:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 20:54:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 20:54:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 48 transitions. [2022-12-12 20:54:35,832 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.35294117647058826 [2022-12-12 20:54:35,832 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 23 predicate places. [2022-12-12 20:54:35,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 84 transitions, 1332 flow [2022-12-12 20:54:35,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 84 transitions, 1332 flow [2022-12-12 20:54:35,834 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 84 transitions, 1332 flow [2022-12-12 20:54:35,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-12-12 20:54:35,834 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:35,835 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:35,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 20:54:36,040 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,SelfDestructingSolverStorable6 [2022-12-12 20:54:36,040 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -683635120, now seen corresponding path program 3 times [2022-12-12 20:54:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023681776] [2022-12-12 20:54:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:36,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:36,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:36,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023681776] [2022-12-12 20:54:36,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023681776] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:54:36,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961405890] [2022-12-12 20:54:36,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:54:36,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:36,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:54:36,137 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) [2022-12-12 20:54:36,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 20:54:36,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 20:54:36,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:54:36,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:54:36,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:54:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:36,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:54:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:36,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961405890] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:54:36,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:54:36,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2022-12-12 20:54:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439822188] [2022-12-12 20:54:36,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:54:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 20:54:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 20:54:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 20:54:36,278 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 20:54:36,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 84 transitions, 1332 flow. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2022-12-12 20:54:36,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:36,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 20:54:36,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:36,428 INFO L130 PetriNetUnfolder]: 126/231 cut-off events. [2022-12-12 20:54:36,428 INFO L131 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2022-12-12 20:54:36,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 231 events. 126/231 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 732 event pairs, 8 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 1739. Up to 209 conditions per place. [2022-12-12 20:54:36,430 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 74 selfloop transitions, 22 changer transitions 0/96 dead transitions. [2022-12-12 20:54:36,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 96 transitions, 1722 flow [2022-12-12 20:54:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 20:54:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 20:54:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 52 transitions. [2022-12-12 20:54:36,432 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4369747899159664 [2022-12-12 20:54:36,434 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 29 predicate places. [2022-12-12 20:54:36,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 96 transitions, 1722 flow [2022-12-12 20:54:36,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 96 transitions, 1722 flow [2022-12-12 20:54:36,436 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 96 transitions, 1722 flow [2022-12-12 20:54:36,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2022-12-12 20:54:36,437 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:36,437 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:36,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 20:54:36,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:36,644 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash 513085900, now seen corresponding path program 4 times [2022-12-12 20:54:36,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:36,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695599347] [2022-12-12 20:54:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:36,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:36,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695599347] [2022-12-12 20:54:36,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695599347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 20:54:36,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 20:54:36,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 20:54:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461632725] [2022-12-12 20:54:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 20:54:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 20:54:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 20:54:36,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 20:54:36,707 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:54:36,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 96 transitions, 1722 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:36,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:36,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:54:36,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:36,766 INFO L130 PetriNetUnfolder]: 120/215 cut-off events. [2022-12-12 20:54:36,766 INFO L131 PetriNetUnfolder]: For 365/365 co-relation queries the response was YES. [2022-12-12 20:54:36,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 215 events. 120/215 cut-off events. For 365/365 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 648 event pairs, 8 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 1786. Up to 193 conditions per place. [2022-12-12 20:54:36,769 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 70 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2022-12-12 20:54:36,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 1760 flow [2022-12-12 20:54:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 20:54:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 20:54:36,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 31 transitions. [2022-12-12 20:54:36,769 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2022-12-12 20:54:36,770 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 31 predicate places. [2022-12-12 20:54:36,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 89 transitions, 1760 flow [2022-12-12 20:54:36,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 89 transitions, 1760 flow [2022-12-12 20:54:36,772 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 89 transitions, 1760 flow [2022-12-12 20:54:36,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2022-12-12 20:54:36,772 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:36,772 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:36,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 20:54:36,773 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash 580810454, now seen corresponding path program 4 times [2022-12-12 20:54:36,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:36,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531020757] [2022-12-12 20:54:36,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:36,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:36,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:36,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531020757] [2022-12-12 20:54:36,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531020757] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:54:36,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304976127] [2022-12-12 20:54:36,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:54:36,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:54:36,839 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) [2022-12-12 20:54:36,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 20:54:36,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:54:36,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:54:36,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 20:54:36,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:54:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:36,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:54:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:36,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304976127] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:54:36,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:54:36,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-12-12 20:54:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146937] [2022-12-12 20:54:36,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:54:36,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-12 20:54:36,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:36,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-12 20:54:36,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-12 20:54:36,973 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 20:54:36,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 89 transitions, 1760 flow. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-12-12 20:54:36,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:36,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 20:54:36,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:37,092 INFO L130 PetriNetUnfolder]: 114/201 cut-off events. [2022-12-12 20:54:37,092 INFO L131 PetriNetUnfolder]: For 361/361 co-relation queries the response was YES. [2022-12-12 20:54:37,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 201 events. 114/201 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 582 event pairs, 8 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 1838. Up to 179 conditions per place. [2022-12-12 20:54:37,094 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 67 selfloop transitions, 15 changer transitions 0/82 dead transitions. [2022-12-12 20:54:37,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 1778 flow [2022-12-12 20:54:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 20:54:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 20:54:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2022-12-12 20:54:37,095 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-12 20:54:37,095 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 34 predicate places. [2022-12-12 20:54:37,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 82 transitions, 1778 flow [2022-12-12 20:54:37,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 82 transitions, 1778 flow [2022-12-12 20:54:37,098 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 82 transitions, 1778 flow [2022-12-12 20:54:37,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-12-12 20:54:37,098 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:37,098 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:37,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 20:54:37,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:37,306 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:37,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1727190663, now seen corresponding path program 1 times [2022-12-12 20:54:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:37,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119442298] [2022-12-12 20:54:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:54:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:37,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119442298] [2022-12-12 20:54:37,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119442298] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:54:37,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023589562] [2022-12-12 20:54:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:37,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:37,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:54:37,452 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) [2022-12-12 20:54:37,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 20:54:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:37,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-12 20:54:37,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:54:37,765 INFO L321 Elim1Store]: treesize reduction 39, result has 70.2 percent of original size [2022-12-12 20:54:37,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 95 treesize of output 124 [2022-12-12 20:54:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:54:38,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:54:38,268 INFO L321 Elim1Store]: treesize reduction 5, result has 96.8 percent of original size [2022-12-12 20:54:38,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 122 treesize of output 193 [2022-12-12 20:54:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:54:39,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023589562] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:54:39,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:54:39,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-12-12 20:54:39,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902003929] [2022-12-12 20:54:39,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:54:39,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 20:54:39,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:54:39,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 20:54:39,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-12 20:54:39,507 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:54:39,507 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 82 transitions, 1778 flow. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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) [2022-12-12 20:54:39,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:54:39,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:54:39,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:54:40,547 INFO L130 PetriNetUnfolder]: 333/584 cut-off events. [2022-12-12 20:54:40,547 INFO L131 PetriNetUnfolder]: For 1381/1381 co-relation queries the response was YES. [2022-12-12 20:54:40,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6798 conditions, 584 events. 333/584 cut-off events. For 1381/1381 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2454 event pairs, 10 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 4222. Up to 524 conditions per place. [2022-12-12 20:54:40,551 INFO L137 encePairwiseOnDemand]: 8/17 looper letters, 71 selfloop transitions, 28 changer transitions 133/236 dead transitions. [2022-12-12 20:54:40,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 236 transitions, 5672 flow [2022-12-12 20:54:40,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 20:54:40,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 20:54:40,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 143 transitions. [2022-12-12 20:54:40,554 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3657289002557545 [2022-12-12 20:54:40,554 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 56 predicate places. [2022-12-12 20:54:40,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 236 transitions, 5672 flow [2022-12-12 20:54:40,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 103 transitions, 2436 flow [2022-12-12 20:54:40,558 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 103 transitions, 2436 flow [2022-12-12 20:54:40,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 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) [2022-12-12 20:54:40,558 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:54:40,558 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:54:40,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 20:54:40,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-12 20:54:40,764 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:54:40,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:54:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash -102590444, now seen corresponding path program 2 times [2022-12-12 20:54:40,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:54:40,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675896440] [2022-12-12 20:54:40,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:54:40,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:54:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:54:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 20:54:40,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:54:40,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675896440] [2022-12-12 20:54:40,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675896440] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:54:40,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020778534] [2022-12-12 20:54:40,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 20:54:40,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:54:40,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:54:40,931 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) [2022-12-12 20:54:40,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 20:54:41,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 20:54:41,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:54:41,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-12 20:54:41,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:54:41,051 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 11 treesize of output 7 [2022-12-12 20:54:41,084 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 [2022-12-12 20:54:41,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 20:54:41,145 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 14 treesize of output 16 [2022-12-12 20:54:41,240 INFO L321 Elim1Store]: treesize reduction 68, result has 16.0 percent of original size [2022-12-12 20:54:41,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 59 treesize of output 45 [2022-12-12 20:54:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:54:41,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:54:41,528 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:54:41,528 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 1 case distinctions, treesize of input 457 treesize of output 265 [2022-12-12 20:54:41,703 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:54:41,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 896 treesize of output 1060 [2022-12-12 20:54:41,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:54:41,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 718 treesize of output 862 [2022-12-12 20:54:42,199 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:54:42,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 532 treesize of output 528 [2022-12-12 20:55:41,733 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:56:00,318 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:56:02,821 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:56:04,501 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-12-12 20:56:07,640 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:56:09,785 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:56:24,458 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:56:52,609 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:57:04,697 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:57:11,188 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:57:41,406 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 20:58:42,044 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-12 20:58:42,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:58:42,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020778534] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:58:42,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:58:42,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2022-12-12 20:58:42,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128726970] [2022-12-12 20:58:42,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:58:42,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 20:58:42,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:58:42,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 20:58:42,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=311, Unknown=7, NotChecked=0, Total=380 [2022-12-12 20:58:42,323 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:58:42,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 103 transitions, 2436 flow. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 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) [2022-12-12 20:58:42,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:58:42,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:58:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:58:44,581 INFO L130 PetriNetUnfolder]: 229/404 cut-off events. [2022-12-12 20:58:44,582 INFO L131 PetriNetUnfolder]: For 1196/1196 co-relation queries the response was YES. [2022-12-12 20:58:44,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5105 conditions, 404 events. 229/404 cut-off events. For 1196/1196 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1502 event pairs, 4 based on Foata normal form. 1/346 useless extension candidates. Maximal degree in co-relation 2995. Up to 367 conditions per place. [2022-12-12 20:58:44,585 INFO L137 encePairwiseOnDemand]: 9/17 looper letters, 83 selfloop transitions, 29 changer transitions 47/163 dead transitions. [2022-12-12 20:58:44,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 163 transitions, 4218 flow [2022-12-12 20:58:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 20:58:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 20:58:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 96 transitions. [2022-12-12 20:58:44,586 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3137254901960784 [2022-12-12 20:58:44,586 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 64 predicate places. [2022-12-12 20:58:44,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 163 transitions, 4218 flow [2022-12-12 20:58:44,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 116 transitions, 2980 flow [2022-12-12 20:58:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 116 transitions, 2980 flow [2022-12-12 20:58:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 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) [2022-12-12 20:58:44,590 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:58:44,590 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:58:44,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 20:58:44,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:58:44,795 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:58:44,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:58:44,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1896319857, now seen corresponding path program 3 times [2022-12-12 20:58:44,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:58:44,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41559667] [2022-12-12 20:58:44,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:58:44,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:58:44,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:58:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 20:58:45,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:58:45,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41559667] [2022-12-12 20:58:45,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41559667] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:58:45,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245076627] [2022-12-12 20:58:45,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 20:58:45,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:58:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:58:45,073 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) [2022-12-12 20:58:45,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 20:58:45,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 20:58:45,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:58:45,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-12 20:58:45,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:58:45,502 INFO L321 Elim1Store]: treesize reduction 50, result has 38.3 percent of original size [2022-12-12 20:58:45,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 179 treesize of output 81 [2022-12-12 20:58:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:58:45,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:58:46,039 INFO L321 Elim1Store]: treesize reduction 15, result has 94.6 percent of original size [2022-12-12 20:58:46,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 256 treesize of output 341 [2022-12-12 20:58:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:58:50,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245076627] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:58:50,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:58:50,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2022-12-12 20:58:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417285989] [2022-12-12 20:58:50,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:58:50,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 20:58:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:58:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 20:58:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2022-12-12 20:58:50,068 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:58:50,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 116 transitions, 2980 flow. Second operand has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 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) [2022-12-12 20:58:50,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:58:50,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:58:50,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:59:11,820 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 [] [2022-12-12 20:59:13,189 INFO L130 PetriNetUnfolder]: 479/836 cut-off events. [2022-12-12 20:59:13,190 INFO L131 PetriNetUnfolder]: For 1720/1720 co-relation queries the response was YES. [2022-12-12 20:59:13,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11495 conditions, 836 events. 479/836 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3529 event pairs, 6 based on Foata normal form. 3/679 useless extension candidates. Maximal degree in co-relation 9227. Up to 786 conditions per place. [2022-12-12 20:59:13,198 INFO L137 encePairwiseOnDemand]: 8/17 looper letters, 202 selfloop transitions, 116 changer transitions 3/325 dead transitions. [2022-12-12 20:59:13,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 325 transitions, 9081 flow [2022-12-12 20:59:13,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 20:59:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 20:59:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 267 transitions. [2022-12-12 20:59:13,202 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.356951871657754 [2022-12-12 20:59:13,202 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 98 predicate places. [2022-12-12 20:59:13,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 325 transitions, 9081 flow [2022-12-12 20:59:13,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 322 transitions, 8988 flow [2022-12-12 20:59:13,212 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 322 transitions, 8988 flow [2022-12-12 20:59:13,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 23 states have internal predecessors, (79), 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) [2022-12-12 20:59:13,212 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:59:13,212 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:59:13,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 20:59:13,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:59:13,417 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:59:13,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:59:13,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1108108434, now seen corresponding path program 4 times [2022-12-12 20:59:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:59:13,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337757556] [2022-12-12 20:59:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:59:13,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:59:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:59:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 20:59:13,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:59:13,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337757556] [2022-12-12 20:59:13,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337757556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:59:13,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085882091] [2022-12-12 20:59:13,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 20:59:13,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:59:13,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:59:13,731 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) [2022-12-12 20:59:13,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 20:59:13,934 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 20:59:13,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:59:13,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 20:59:13,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:59:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 20:59:14,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:59:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 20:59:15,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085882091] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:59:15,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:59:15,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-12 20:59:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109788158] [2022-12-12 20:59:15,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:59:15,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 20:59:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:59:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 20:59:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-12 20:59:15,305 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 17 [2022-12-12 20:59:15,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 322 transitions, 8988 flow. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:59:15,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:59:15,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 17 [2022-12-12 20:59:15,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 20:59:21,280 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 38 DAG size of output: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 20:59:23,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-12 20:59:26,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-12 20:59:26,774 INFO L130 PetriNetUnfolder]: 851/1433 cut-off events. [2022-12-12 20:59:26,775 INFO L131 PetriNetUnfolder]: For 3093/3093 co-relation queries the response was YES. [2022-12-12 20:59:26,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21174 conditions, 1433 events. 851/1433 cut-off events. For 3093/3093 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6371 event pairs, 2 based on Foata normal form. 0/1159 useless extension candidates. Maximal degree in co-relation 18394. Up to 1371 conditions per place. [2022-12-12 20:59:26,785 INFO L137 encePairwiseOnDemand]: 12/17 looper letters, 427 selfloop transitions, 146 changer transitions 1/578 dead transitions. [2022-12-12 20:59:26,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 578 transitions, 17322 flow [2022-12-12 20:59:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 20:59:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 20:59:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 100 transitions. [2022-12-12 20:59:26,787 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2022-12-12 20:59:26,787 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 111 predicate places. [2022-12-12 20:59:26,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 578 transitions, 17322 flow [2022-12-12 20:59:26,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 577 transitions, 17292 flow [2022-12-12 20:59:26,800 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 577 transitions, 17292 flow [2022-12-12 20:59:26,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 20:59:26,801 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 20:59:26,801 INFO L214 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 20:59:26,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 20:59:27,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 20:59:27,007 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 20:59:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 20:59:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash 451820093, now seen corresponding path program 5 times [2022-12-12 20:59:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 20:59:27,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852096507] [2022-12-12 20:59:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 20:59:27,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 20:59:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 20:59:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:59:29,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 20:59:29,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852096507] [2022-12-12 20:59:29,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852096507] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 20:59:29,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785648463] [2022-12-12 20:59:29,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 20:59:29,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 20:59:29,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 20:59:29,837 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 20:59:29,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 20:59:29,957 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-12 20:59:29,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 20:59:29,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-12 20:59:29,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 20:59:30,039 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 13 treesize of output 9 [2022-12-12 20:59:30,072 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 [2022-12-12 20:59:30,104 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 [2022-12-12 20:59:30,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 20:59:30,683 INFO L321 Elim1Store]: treesize reduction 280, result has 24.7 percent of original size [2022-12-12 20:59:30,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 207 treesize of output 156 [2022-12-12 20:59:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 20:59:30,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:59:32,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:59:32,031 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 1 case distinctions, treesize of input 1018 treesize of output 574 [2022-12-12 20:59:32,872 INFO L321 Elim1Store]: treesize reduction 5, result has 98.8 percent of original size [2022-12-12 20:59:32,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 2832 treesize of output 2711 [2022-12-12 20:59:33,996 INFO L321 Elim1Store]: treesize reduction 12, result has 97.2 percent of original size [2022-12-12 20:59:33,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 2224 treesize of output 2248 [2022-12-12 20:59:35,300 INFO L321 Elim1Store]: treesize reduction 12, result has 97.2 percent of original size [2022-12-12 20:59:35,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 18 new quantified variables, introduced 45 case distinctions, treesize of input 1768 treesize of output 1336 [2022-12-12 21:06:44,120 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 21:07:00,482 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 21:07:19,574 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 21:07:36,888 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 21:07:48,422 WARN L718 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2022-12-12 21:08:03,013 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 21:08:03,641 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 21:08:04,025 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2022-12-12 21:08:15,875 WARN L718 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Received shutdown request... [2022-12-12 21:08:19,601 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-12 21:08:19,603 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 21:08:19,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 21:08:19,615 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 21:08:19,615 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 21:08:19,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 21:08:19,804 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 6ms.. [2022-12-12 21:08:19,805 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 21:08:19,805 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 21:08:19,805 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 1, 1] [2022-12-12 21:08:19,807 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 21:08:19,807 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 21:08:19,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 09:08:19 BasicIcfg [2022-12-12 21:08:19,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 21:08:19,809 INFO L158 Benchmark]: Toolchain (without parser) took 831875.29ms. Allocated memory was 185.6MB in the beginning and 715.1MB in the end (delta: 529.5MB). Free memory was 162.6MB in the beginning and 352.6MB in the end (delta: -190.0MB). Peak memory consumption was 454.4MB. Max. memory is 8.0GB. [2022-12-12 21:08:19,809 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 162.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 21:08:19,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.48ms. Allocated memory is still 185.6MB. Free memory was 162.6MB in the beginning and 151.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 21:08:19,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.13ms. Allocated memory is still 185.6MB. Free memory was 151.1MB in the beginning and 149.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 21:08:19,809 INFO L158 Benchmark]: Boogie Preprocessor took 34.39ms. Allocated memory is still 185.6MB. Free memory was 149.0MB in the beginning and 147.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 21:08:19,810 INFO L158 Benchmark]: RCFGBuilder took 453.20ms. Allocated memory is still 185.6MB. Free memory was 146.9MB in the beginning and 129.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-12 21:08:19,810 INFO L158 Benchmark]: TraceAbstraction took 831102.77ms. Allocated memory was 185.6MB in the beginning and 715.1MB in the end (delta: 529.5MB). Free memory was 128.6MB in the beginning and 352.6MB in the end (delta: -224.1MB). Peak memory consumption was 420.8MB. Max. memory is 8.0GB. [2022-12-12 21:08:19,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory is still 162.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 233.48ms. Allocated memory is still 185.6MB. Free memory was 162.6MB in the beginning and 151.1MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.13ms. Allocated memory is still 185.6MB. Free memory was 151.1MB in the beginning and 149.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.39ms. Allocated memory is still 185.6MB. Free memory was 149.0MB in the beginning and 147.4MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 453.20ms. Allocated memory is still 185.6MB. Free memory was 146.9MB in the beginning and 129.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 831102.77ms. Allocated memory was 185.6MB in the beginning and 715.1MB in the end (delta: 529.5MB). Free memory was 128.6MB in the beginning and 352.6MB in the end (delta: -224.1MB). Peak memory consumption was 420.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 173 PlacesBefore, 21 PlacesAfterwards, 183 TransitionsBefore, 17 TransitionsAfterwards, 3892 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 69 TrivialYvCompositions, 83 ConcurrentYvCompositions, 14 ChoiceCompositions, 166 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2527, independent: 2526, independent conditional: 2526, independent unconditional: 0, dependent: 1, dependent conditional: 1, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 2527, independent: 2526, independent conditional: 0, independent unconditional: 2526, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2527, independent: 2526, independent conditional: 0, independent unconditional: 2526, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2527, independent: 2526, independent conditional: 0, independent unconditional: 2526, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2286, independent: 2285, independent conditional: 0, independent unconditional: 2285, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2286, independent: 2285, independent conditional: 0, independent unconditional: 2285, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2527, independent: 241, independent conditional: 0, independent unconditional: 241, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2286, unknown conditional: 0, unknown unconditional: 2286] , Statistics on independence cache: Total cache size (in pairs): 4489, Positive cache size: 4488, Positive conditional cache size: 0, Positive unconditional cache size: 4488, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 6ms.. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 6ms.. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 23 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 6ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 261 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 831.0s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 38.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 816 SdHoareTripleChecker+Valid, 9.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 816 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 9.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 143 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2840 IncrementalHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 143 mSolverCounterUnsat, 28 mSDtfsCounter, 2840 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 407 GetRequests, 227 SyntacticMatches, 7 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 30.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17292occurred in iteration=14, InterpolantAutomatonStates: 146, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 4747 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 251.5s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 483 ConstructedInterpolants, 12 QuantifiedInterpolants, 6643 SizeOfPredicates, 63 NumberOfNonLiveVariables, 1498 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 30 InterpolantComputations, 7 PerfectInterpolantSequences, 42/129 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown