/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:16:12,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:16:12,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:16:12,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:16:12,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:16:12,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:16:12,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:16:12,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:16:12,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:16:12,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:16:12,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:16:12,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:16:12,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:16:12,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:16:12,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:16:12,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:16:12,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:16:12,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:16:12,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:16:12,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:16:12,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:16:12,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:16:12,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:16:12,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:16:12,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:16:12,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:16:12,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:16:12,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:16:12,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:16:12,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:16:12,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:16:12,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:16:12,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:16:12,509 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:16:12,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:16:12,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:16:12,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:16:12,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:16:12,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:16:12,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:16:12,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:16:12,514 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-VariableLbe.epf [2023-01-28 02:16:12,546 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:16:12,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:16:12,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:16:12,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:16:12,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:16:12,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:16:12,549 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:16:12,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:16:12,550 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:16:12,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:16:12,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:16:12,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:16:12,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:16:12,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:16:12,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:16:12,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:16:12,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:16:12,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:16:12,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:16:12,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:16:12,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:16:12,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:16:12,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:16:12,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:16:12,554 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:16:12,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:16:12,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:16:12,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:16:12,838 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:16:12,839 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:16:12,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2023-01-28 02:16:14,233 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:16:14,370 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:16:14,370 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c [2023-01-28 02:16:14,374 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c99ee32/f856b103716b40febb5c57bf35df73b8/FLAGb7eec4b0b [2023-01-28 02:16:14,384 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c99ee32/f856b103716b40febb5c57bf35df73b8 [2023-01-28 02:16:14,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:16:14,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:16:14,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:16:14,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:16:14,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:16:14,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2a97ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14, skipping insertion in model container [2023-01-28 02:16:14,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:16:14,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:16:14,575 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2237,2250] [2023-01-28 02:16:14,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:16:14,591 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:16:14,622 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x3.wvr.c[2237,2250] [2023-01-28 02:16:14,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:16:14,634 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:16:14,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14 WrapperNode [2023-01-28 02:16:14,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:16:14,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:16:14,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:16:14,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:16:14,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,681 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-01-28 02:16:14,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:16:14,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:16:14,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:16:14,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:16:14,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:16:14,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:16:14,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:16:14,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:16:14,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (1/1) ... [2023-01-28 02:16:14,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:16:14,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:16:14,744 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) [2023-01-28 02:16:14,794 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 [2023-01-28 02:16:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:16:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:16:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:16:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:16:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:16:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:16:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:16:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 02:16:14,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 02:16:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:16:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:16:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:16:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:16:14,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:16:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:16:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:16:14,816 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:16:14,894 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:16:14,896 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:16:15,154 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:16:15,159 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:16:15,159 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 02:16:15,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:16:15 BoogieIcfgContainer [2023-01-28 02:16:15,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:16:15,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:16:15,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:16:15,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:16:15,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:16:14" (1/3) ... [2023-01-28 02:16:15,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c0b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:16:15, skipping insertion in model container [2023-01-28 02:16:15,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:16:14" (2/3) ... [2023-01-28 02:16:15,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16c0b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:16:15, skipping insertion in model container [2023-01-28 02:16:15,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:16:15" (3/3) ... [2023-01-28 02:16:15,166 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x3.wvr.c [2023-01-28 02:16:15,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:16:15,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:16:15,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:16:15,298 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 02:16:15,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 123 transitions, 278 flow [2023-01-28 02:16:15,404 INFO L130 PetriNetUnfolder]: 10/119 cut-off events. [2023-01-28 02:16:15,405 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 02:16:15,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 119 events. 10/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-28 02:16:15,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 123 transitions, 278 flow [2023-01-28 02:16:15,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 107 transitions, 238 flow [2023-01-28 02:16:15,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:16:15,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 107 transitions, 238 flow [2023-01-28 02:16:15,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 107 transitions, 238 flow [2023-01-28 02:16:15,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 107 transitions, 238 flow [2023-01-28 02:16:15,467 INFO L130 PetriNetUnfolder]: 10/107 cut-off events. [2023-01-28 02:16:15,467 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 02:16:15,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 107 events. 10/107 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-01-28 02:16:15,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224 [2023-01-28 02:16:18,692 INFO L134 LiptonReduction]: Checked pairs total: 1522 [2023-01-28 02:16:18,692 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-01-28 02:16:18,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:16:18,708 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;@7c87a5e2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:16:18,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 02:16:18,712 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2023-01-28 02:16:18,713 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 02:16:18,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:18,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:18,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:18,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1000817363, now seen corresponding path program 1 times [2023-01-28 02:16:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693848579] [2023-01-28 02:16:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:18,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:19,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693848579] [2023-01-28 02:16:19,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693848579] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:16:19,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:16:19,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 02:16:19,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152354985] [2023-01-28 02:16:19,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:16:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:16:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:16:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:16:19,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 216 [2023-01-28 02:16:19,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-01-28 02:16:19,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:19,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 216 [2023-01-28 02:16:19,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:19,449 INFO L130 PetriNetUnfolder]: 497/677 cut-off events. [2023-01-28 02:16:19,450 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-01-28 02:16:19,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 677 events. 497/677 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1778 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2023-01-28 02:16:19,461 INFO L137 encePairwiseOnDemand]: 210/216 looper letters, 41 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2023-01-28 02:16:19,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 233 flow [2023-01-28 02:16:19,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:16:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:16:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-01-28 02:16:19,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-01-28 02:16:19,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-01-28 02:16:19,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-01-28 02:16:19,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:19,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-01-28 02:16:19,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2023-01-28 02:16:19,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-01-28 02:16:19,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 216.0) internal successors, (864), 4 states have internal predecessors, (864), 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) [2023-01-28 02:16:19,497 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 306 transitions. [2023-01-28 02:16:19,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 233 flow [2023-01-28 02:16:19,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 02:16:19,505 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 91 flow [2023-01-28 02:16:19,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-28 02:16:19,510 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-01-28 02:16:19,510 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 91 flow [2023-01-28 02:16:19,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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) [2023-01-28 02:16:19,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:19,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:19,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:16:19,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:19,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1019366599, now seen corresponding path program 1 times [2023-01-28 02:16:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:19,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540583777] [2023-01-28 02:16:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:19,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540583777] [2023-01-28 02:16:19,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540583777] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:16:19,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:16:19,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:16:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414716436] [2023-01-28 02:16:19,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:16:19,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:16:19,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:19,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:16:19,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:16:19,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-28 02:16:19,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:19,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:19,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-28 02:16:19,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:19,936 INFO L130 PetriNetUnfolder]: 693/951 cut-off events. [2023-01-28 02:16:19,937 INFO L131 PetriNetUnfolder]: For 342/342 co-relation queries the response was YES. [2023-01-28 02:16:19,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 951 events. 693/951 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2792 event pairs, 67 based on Foata normal form. 32/983 useless extension candidates. Maximal degree in co-relation 766. Up to 371 conditions per place. [2023-01-28 02:16:19,942 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 68 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2023-01-28 02:16:19,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 78 transitions, 387 flow [2023-01-28 02:16:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:16:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:16:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2023-01-28 02:16:19,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-01-28 02:16:19,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2023-01-28 02:16:19,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2023-01-28 02:16:19,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:19,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2023-01-28 02:16:19,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2023-01-28 02:16:19,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:19,950 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:19,950 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 91 flow. Second operand 5 states and 522 transitions. [2023-01-28 02:16:19,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 78 transitions, 387 flow [2023-01-28 02:16:19,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 78 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:16:19,953 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 151 flow [2023-01-28 02:16:19,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2023-01-28 02:16:19,954 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-28 02:16:19,954 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 151 flow [2023-01-28 02:16:19,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:19,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:19,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:19,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:16:19,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:19,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash 539503439, now seen corresponding path program 1 times [2023-01-28 02:16:19,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:19,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590198912] [2023-01-28 02:16:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:19,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:20,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:20,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590198912] [2023-01-28 02:16:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590198912] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:16:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750693506] [2023-01-28 02:16:20,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:20,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:16:20,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:16:20,085 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) [2023-01-28 02:16:20,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:16:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:20,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:16:20,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:16:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:20,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:16:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:20,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750693506] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:16:20,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:16:20,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 02:16:20,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494302120] [2023-01-28 02:16:20,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:16:20,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:16:20,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:20,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:16:20,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:16:20,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-28 02:16:20,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 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) [2023-01-28 02:16:20,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:20,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-28 02:16:20,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:20,795 INFO L130 PetriNetUnfolder]: 1309/1809 cut-off events. [2023-01-28 02:16:20,796 INFO L131 PetriNetUnfolder]: For 1975/1975 co-relation queries the response was YES. [2023-01-28 02:16:20,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5608 conditions, 1809 events. 1309/1809 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6397 event pairs, 291 based on Foata normal form. 68/1877 useless extension candidates. Maximal degree in co-relation 2898. Up to 757 conditions per place. [2023-01-28 02:16:20,805 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 98 selfloop transitions, 8 changer transitions 0/106 dead transitions. [2023-01-28 02:16:20,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 106 transitions, 641 flow [2023-01-28 02:16:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:16:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:16:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2023-01-28 02:16:20,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2023-01-28 02:16:20,807 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2023-01-28 02:16:20,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2023-01-28 02:16:20,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:20,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2023-01-28 02:16:20,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 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) [2023-01-28 02:16:20,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:20,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:20,811 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 151 flow. Second operand 5 states and 532 transitions. [2023-01-28 02:16:20,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 106 transitions, 641 flow [2023-01-28 02:16:20,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 106 transitions, 641 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:16:20,816 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 206 flow [2023-01-28 02:16:20,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2023-01-28 02:16:20,817 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-01-28 02:16:20,817 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 206 flow [2023-01-28 02:16:20,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 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) [2023-01-28 02:16:20,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:20,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:20,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 02:16:21,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:16:21,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:21,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash -905361945, now seen corresponding path program 2 times [2023-01-28 02:16:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:21,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902623674] [2023-01-28 02:16:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:21,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:21,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902623674] [2023-01-28 02:16:21,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902623674] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:16:21,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:16:21,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:16:21,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482239874] [2023-01-28 02:16:21,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:16:21,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:16:21,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:21,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:16:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:16:21,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-28 02:16:21,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:21,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:21,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-28 02:16:21,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:21,378 INFO L130 PetriNetUnfolder]: 1105/1509 cut-off events. [2023-01-28 02:16:21,378 INFO L131 PetriNetUnfolder]: For 2593/2593 co-relation queries the response was YES. [2023-01-28 02:16:21,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5565 conditions, 1509 events. 1105/1509 cut-off events. For 2593/2593 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5157 event pairs, 89 based on Foata normal form. 26/1535 useless extension candidates. Maximal degree in co-relation 3052. Up to 620 conditions per place. [2023-01-28 02:16:21,387 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 94 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2023-01-28 02:16:21,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 105 transitions, 697 flow [2023-01-28 02:16:21,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:16:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:16:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 526 transitions. [2023-01-28 02:16:21,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48703703703703705 [2023-01-28 02:16:21,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 526 transitions. [2023-01-28 02:16:21,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 526 transitions. [2023-01-28 02:16:21,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:21,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 526 transitions. [2023-01-28 02:16:21,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.2) internal successors, (526), 5 states have internal predecessors, (526), 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) [2023-01-28 02:16:21,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:21,392 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:21,392 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 206 flow. Second operand 5 states and 526 transitions. [2023-01-28 02:16:21,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 105 transitions, 697 flow [2023-01-28 02:16:21,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 105 transitions, 697 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:16:21,400 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 267 flow [2023-01-28 02:16:21,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-01-28 02:16:21,402 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-01-28 02:16:21,402 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 267 flow [2023-01-28 02:16:21,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:21,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:21,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:21,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:16:21,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:21,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash -114084107, now seen corresponding path program 1 times [2023-01-28 02:16:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235546628] [2023-01-28 02:16:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:21,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:21,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:21,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235546628] [2023-01-28 02:16:21,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235546628] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:16:21,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:16:21,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:16:21,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379402580] [2023-01-28 02:16:21,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:16:21,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:16:21,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:21,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:16:21,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:16:21,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-28 02:16:21,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:21,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:21,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-28 02:16:21,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:21,748 INFO L130 PetriNetUnfolder]: 1063/1467 cut-off events. [2023-01-28 02:16:21,748 INFO L131 PetriNetUnfolder]: For 3395/3395 co-relation queries the response was YES. [2023-01-28 02:16:21,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5790 conditions, 1467 events. 1063/1467 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5166 event pairs, 83 based on Foata normal form. 42/1509 useless extension candidates. Maximal degree in co-relation 3213. Up to 619 conditions per place. [2023-01-28 02:16:21,759 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 93 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2023-01-28 02:16:21,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 103 transitions, 710 flow [2023-01-28 02:16:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:16:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:16:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 525 transitions. [2023-01-28 02:16:21,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2023-01-28 02:16:21,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 525 transitions. [2023-01-28 02:16:21,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 525 transitions. [2023-01-28 02:16:21,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:21,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 525 transitions. [2023-01-28 02:16:21,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 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) [2023-01-28 02:16:21,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:21,766 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:21,766 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 267 flow. Second operand 5 states and 525 transitions. [2023-01-28 02:16:21,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 103 transitions, 710 flow [2023-01-28 02:16:21,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 103 transitions, 699 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 02:16:21,772 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 270 flow [2023-01-28 02:16:21,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-01-28 02:16:21,774 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-01-28 02:16:21,774 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 270 flow [2023-01-28 02:16:21,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:21,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:21,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:21,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:16:21,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:21,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 555709242, now seen corresponding path program 1 times [2023-01-28 02:16:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498736933] [2023-01-28 02:16:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:21,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498736933] [2023-01-28 02:16:21,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498736933] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:16:21,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211092736] [2023-01-28 02:16:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:16:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:16:21,943 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) [2023-01-28 02:16:21,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:16:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:22,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:16:22,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:16:22,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:22,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:16:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:22,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211092736] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:16:22,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:16:22,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 02:16:22,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862470180] [2023-01-28 02:16:22,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:16:22,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:16:22,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:22,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:16:22,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:16:22,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-28 02:16:22,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 02:16:22,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:22,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-28 02:16:22,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:22,612 INFO L130 PetriNetUnfolder]: 1407/1959 cut-off events. [2023-01-28 02:16:22,612 INFO L131 PetriNetUnfolder]: For 4939/4939 co-relation queries the response was YES. [2023-01-28 02:16:22,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 1959 events. 1407/1959 cut-off events. For 4939/4939 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7090 event pairs, 287 based on Foata normal form. 72/2031 useless extension candidates. Maximal degree in co-relation 4020. Up to 786 conditions per place. [2023-01-28 02:16:22,625 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 104 selfloop transitions, 10 changer transitions 0/114 dead transitions. [2023-01-28 02:16:22,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 114 transitions, 893 flow [2023-01-28 02:16:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:16:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:16:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-01-28 02:16:22,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48518518518518516 [2023-01-28 02:16:22,627 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-01-28 02:16:22,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-01-28 02:16:22,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:22,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-01-28 02:16:22,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 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) [2023-01-28 02:16:22,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:22,629 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:22,630 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 270 flow. Second operand 5 states and 524 transitions. [2023-01-28 02:16:22,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 114 transitions, 893 flow [2023-01-28 02:16:22,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 860 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 02:16:22,634 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 315 flow [2023-01-28 02:16:22,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-01-28 02:16:22,635 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 21 predicate places. [2023-01-28 02:16:22,635 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 315 flow [2023-01-28 02:16:22,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.66666666666667) internal successors, (574), 6 states have internal predecessors, (574), 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) [2023-01-28 02:16:22,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:22,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:22,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:16:22,840 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,SelfDestructingSolverStorable5 [2023-01-28 02:16:22,841 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:22,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1193580880, now seen corresponding path program 2 times [2023-01-28 02:16:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:22,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378597572] [2023-01-28 02:16:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:22,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:22,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:22,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378597572] [2023-01-28 02:16:22,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378597572] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:16:22,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:16:22,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:16:22,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539486021] [2023-01-28 02:16:22,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:16:22,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:16:22,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:16:22,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:16:22,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-28 02:16:22,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:22,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:22,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-28 02:16:22,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:23,118 INFO L130 PetriNetUnfolder]: 1237/1713 cut-off events. [2023-01-28 02:16:23,118 INFO L131 PetriNetUnfolder]: For 4450/4450 co-relation queries the response was YES. [2023-01-28 02:16:23,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 1713 events. 1237/1713 cut-off events. For 4450/4450 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6045 event pairs, 65 based on Foata normal form. 34/1747 useless extension candidates. Maximal degree in co-relation 5277. Up to 672 conditions per place. [2023-01-28 02:16:23,128 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 98 selfloop transitions, 9 changer transitions 4/111 dead transitions. [2023-01-28 02:16:23,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 875 flow [2023-01-28 02:16:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:16:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:16:23,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-01-28 02:16:23,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824074074074074 [2023-01-28 02:16:23,130 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-01-28 02:16:23,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-01-28 02:16:23,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:23,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-01-28 02:16:23,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 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) [2023-01-28 02:16:23,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:23,133 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:23,133 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 315 flow. Second operand 5 states and 521 transitions. [2023-01-28 02:16:23,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 875 flow [2023-01-28 02:16:23,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 866 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 02:16:23,140 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 319 flow [2023-01-28 02:16:23,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2023-01-28 02:16:23,141 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-01-28 02:16:23,141 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 319 flow [2023-01-28 02:16:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:23,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:23,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:23,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:16:23,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:23,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1446487525, now seen corresponding path program 2 times [2023-01-28 02:16:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:23,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937146542] [2023-01-28 02:16:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937146542] [2023-01-28 02:16:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937146542] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:16:23,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831431931] [2023-01-28 02:16:23,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:16:23,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:16:23,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:16:23,250 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) [2023-01-28 02:16:23,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:16:23,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:16:23,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:16:23,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 02:16:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:16:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:23,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:16:23,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:23,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831431931] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:16:23,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:16:23,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 02:16:23,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599015338] [2023-01-28 02:16:23,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:16:23,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:16:23,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:23,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:16:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:16:23,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 216 [2023-01-28 02:16:23,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-01-28 02:16:23,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:23,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 216 [2023-01-28 02:16:23,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:23,777 INFO L130 PetriNetUnfolder]: 1441/1985 cut-off events. [2023-01-28 02:16:23,778 INFO L131 PetriNetUnfolder]: For 5224/5224 co-relation queries the response was YES. [2023-01-28 02:16:23,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9185 conditions, 1985 events. 1441/1985 cut-off events. For 5224/5224 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7183 event pairs, 129 based on Foata normal form. 68/2053 useless extension candidates. Maximal degree in co-relation 5914. Up to 1119 conditions per place. [2023-01-28 02:16:23,793 INFO L137 encePairwiseOnDemand]: 209/216 looper letters, 114 selfloop transitions, 10 changer transitions 3/127 dead transitions. [2023-01-28 02:16:23,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 127 transitions, 994 flow [2023-01-28 02:16:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:16:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:16:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2023-01-28 02:16:23,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-01-28 02:16:23,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2023-01-28 02:16:23,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2023-01-28 02:16:23,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:23,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2023-01-28 02:16:23,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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) [2023-01-28 02:16:23,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-01-28 02:16:23,798 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 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) [2023-01-28 02:16:23,798 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 319 flow. Second operand 6 states and 594 transitions. [2023-01-28 02:16:23,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 127 transitions, 994 flow [2023-01-28 02:16:23,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 127 transitions, 985 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:16:23,804 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 370 flow [2023-01-28 02:16:23,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-01-28 02:16:23,807 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 31 predicate places. [2023-01-28 02:16:23,808 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 370 flow [2023-01-28 02:16:23,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.0) internal successors, (644), 7 states have internal predecessors, (644), 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) [2023-01-28 02:16:23,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:23,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:23,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:16:24,013 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 [2023-01-28 02:16:24,014 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:24,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2141398155, now seen corresponding path program 2 times [2023-01-28 02:16:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296770127] [2023-01-28 02:16:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:24,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:24,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296770127] [2023-01-28 02:16:24,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296770127] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:16:24,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:16:24,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:16:24,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388778289] [2023-01-28 02:16:24,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:16:24,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:16:24,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:16:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:16:24,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 216 [2023-01-28 02:16:24,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 370 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:24,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:24,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 216 [2023-01-28 02:16:24,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:24,368 INFO L130 PetriNetUnfolder]: 1657/2269 cut-off events. [2023-01-28 02:16:24,368 INFO L131 PetriNetUnfolder]: For 8538/8538 co-relation queries the response was YES. [2023-01-28 02:16:24,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11206 conditions, 2269 events. 1657/2269 cut-off events. For 8538/8538 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8107 event pairs, 481 based on Foata normal form. 68/2337 useless extension candidates. Maximal degree in co-relation 9738. Up to 1331 conditions per place. [2023-01-28 02:16:24,384 INFO L137 encePairwiseOnDemand]: 211/216 looper letters, 117 selfloop transitions, 8 changer transitions 0/125 dead transitions. [2023-01-28 02:16:24,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 125 transitions, 1158 flow [2023-01-28 02:16:24,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:16:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:16:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2023-01-28 02:16:24,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2023-01-28 02:16:24,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2023-01-28 02:16:24,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2023-01-28 02:16:24,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:16:24,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2023-01-28 02:16:24,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2023-01-28 02:16:24,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:24,389 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 216.0) internal successors, (1296), 6 states have internal predecessors, (1296), 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) [2023-01-28 02:16:24,389 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 370 flow. Second operand 5 states and 522 transitions. [2023-01-28 02:16:24,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 125 transitions, 1158 flow [2023-01-28 02:16:24,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 125 transitions, 1105 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-01-28 02:16:24,399 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 404 flow [2023-01-28 02:16:24,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2023-01-28 02:16:24,400 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2023-01-28 02:16:24,400 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 404 flow [2023-01-28 02:16:24,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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) [2023-01-28 02:16:24,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:16:24,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:16:24,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 02:16:24,401 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:16:24,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:16:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -567521946, now seen corresponding path program 1 times [2023-01-28 02:16:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:16:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842913954] [2023-01-28 02:16:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:16:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:24,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:16:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842913954] [2023-01-28 02:16:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842913954] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:16:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319634075] [2023-01-28 02:16:24,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:16:24,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:16:24,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:16:24,833 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) [2023-01-28 02:16:24,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:16:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:16:25,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 02:16:25,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:16:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:32,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:16:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:16:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319634075] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:16:36,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:16:36,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2023-01-28 02:16:36,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223722860] [2023-01-28 02:16:36,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:16:36,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:16:36,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:16:36,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:16:36,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:16:36,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 216 [2023-01-28 02:16:36,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 404 flow. Second operand has 14 states, 14 states have (on average 88.42857142857143) internal successors, (1238), 14 states have internal predecessors, (1238), 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) [2023-01-28 02:16:36,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:16:36,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 216 [2023-01-28 02:16:36,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:16:38,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:16:50,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:16:54,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:16:56,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:16:58,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:00,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:02,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:04,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:06,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:08,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:10,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:12,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:15,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:21,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:22,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:26,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:30,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-01-28 02:17:31,328 INFO L130 PetriNetUnfolder]: 2979/4106 cut-off events. [2023-01-28 02:17:31,328 INFO L131 PetriNetUnfolder]: For 14804/14804 co-relation queries the response was YES. [2023-01-28 02:17:31,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21391 conditions, 4106 events. 2979/4106 cut-off events. For 14804/14804 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16868 event pairs, 347 based on Foata normal form. 3/4109 useless extension candidates. Maximal degree in co-relation 19139. Up to 2337 conditions per place. [2023-01-28 02:17:31,351 INFO L137 encePairwiseOnDemand]: 208/216 looper letters, 215 selfloop transitions, 97 changer transitions 10/322 dead transitions. [2023-01-28 02:17:31,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 322 transitions, 2805 flow [2023-01-28 02:17:31,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 02:17:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 02:17:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1571 transitions. [2023-01-28 02:17:31,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45457175925925924 [2023-01-28 02:17:31,356 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1571 transitions. [2023-01-28 02:17:31,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1571 transitions. [2023-01-28 02:17:31,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:17:31,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1571 transitions. [2023-01-28 02:17:31,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.1875) internal successors, (1571), 16 states have internal predecessors, (1571), 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) [2023-01-28 02:17:31,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 216.0) internal successors, (3672), 17 states have internal predecessors, (3672), 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) [2023-01-28 02:17:31,363 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 216.0) internal successors, (3672), 17 states have internal predecessors, (3672), 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) [2023-01-28 02:17:31,363 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 404 flow. Second operand 16 states and 1571 transitions. [2023-01-28 02:17:31,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 322 transitions, 2805 flow [2023-01-28 02:17:31,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 322 transitions, 2643 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-01-28 02:17:31,388 INFO L231 Difference]: Finished difference. Result has 90 places, 149 transitions, 1529 flow [2023-01-28 02:17:31,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1529, PETRI_PLACES=90, PETRI_TRANSITIONS=149} [2023-01-28 02:17:31,389 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 56 predicate places. [2023-01-28 02:17:31,390 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 149 transitions, 1529 flow [2023-01-28 02:17:31,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.42857142857143) internal successors, (1238), 14 states have internal predecessors, (1238), 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) [2023-01-28 02:17:31,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:17:31,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:17:31,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:17:31,595 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 [2023-01-28 02:17:31,597 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 02:17:31,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:17:31,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1310504207, now seen corresponding path program 1 times [2023-01-28 02:17:31,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:17:31,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966962989] [2023-01-28 02:17:31,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:17:31,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:17:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:17:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:17:32,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:17:32,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966962989] [2023-01-28 02:17:32,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966962989] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:17:32,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206107795] [2023-01-28 02:17:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:17:32,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:17:32,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:17:32,145 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) [2023-01-28 02:17:32,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 02:17:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:17:32,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 02:17:32,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:18:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:18:30,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:22:08,667 WARN L222 SmtUtils]: Spent 3.46m on a formula simplification. DAG size of input: 3055 DAG size of output: 3017 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 02:30:48,805 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:30:48,817 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 [2023-01-28 02:30:49,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 02:30:49,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown