/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:33:35,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:33:35,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:33:35,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 11:33:35,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 11:33:35,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 11:33:35,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 11:33:35,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 11:33:35,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 11:33:35,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 11:33:35,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 11:33:35,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 11:33:35,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:33:35,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:33:35,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:33:35,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:33:35,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:33:35,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:33:35,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:33:35,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:33:35,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:33:35,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:33:35,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:33:35,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:33:35,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 11:33:35,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 11:33:35,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 11:33:35,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 11:33:35,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 11:33:35,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 11:33:35,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 11:33:35,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 11:33:35,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 11:33:35,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 11:33:35,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 11:33:35,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 11:33:35,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 11:33:35,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 11:33:35,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:33:35,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:33:35,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:33:35,604 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 11:33:35,630 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:33:35,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:33:35,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:33:35,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:33:35,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:33:35,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:33:35,632 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:33:35,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:33:35,632 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:33:35,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:33:35,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:33:35,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:33:35,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:33:35,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:33:35,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:33:35,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:33:35,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:33:35,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:33:35,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:33:35,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:33:35,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:33:35,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:33:35,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:33:35,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:33:35,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:33:35,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:33:35,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:33:35,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:33:35,875 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:33:35,876 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:33:35,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-01-28 11:33:36,979 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:33:37,151 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:33:37,152 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2023-01-28 11:33:37,157 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9943935ff/21b38e6580824bb7825b49da96ef33a6/FLAG8a958c0bf [2023-01-28 11:33:37,168 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9943935ff/21b38e6580824bb7825b49da96ef33a6 [2023-01-28 11:33:37,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:33:37,171 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:33:37,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:33:37,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:33:37,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:33:37,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699638b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37, skipping insertion in model container [2023-01-28 11:33:37,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:33:37,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:33:37,384 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/popl20-prod-cons3.wvr.c[4007,4020] [2023-01-28 11:33:37,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:33:37,406 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:33:37,431 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/popl20-prod-cons3.wvr.c[4007,4020] [2023-01-28 11:33:37,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:33:37,449 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:33:37,451 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:33:37,457 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:33:37,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37 WrapperNode [2023-01-28 11:33:37,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:33:37,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:33:37,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:33:37,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:33:37,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,513 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 274 [2023-01-28 11:33:37,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:33:37,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:33:37,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:33:37,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:33:37,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:33:37,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:33:37,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:33:37,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:33:37,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (1/1) ... [2023-01-28 11:33:37,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:33:37,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:33:37,578 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 11:33:37,580 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 11:33:37,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:33:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:33:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:33:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:33:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:33:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:33:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:33:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:33:37,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:33:37,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:33:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 11:33:37,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 11:33:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:33:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 11:33:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 11:33:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 11:33:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:33:37,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:33:37,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:33:37,607 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 11:33:37,715 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:33:37,717 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:33:38,073 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:33:38,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:33:38,180 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-01-28 11:33:38,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:33:38 BoogieIcfgContainer [2023-01-28 11:33:38,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:33:38,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:33:38,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:33:38,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:33:38,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:33:37" (1/3) ... [2023-01-28 11:33:38,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bd644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:33:38, skipping insertion in model container [2023-01-28 11:33:38,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:33:37" (2/3) ... [2023-01-28 11:33:38,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bd644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:33:38, skipping insertion in model container [2023-01-28 11:33:38,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:33:38" (3/3) ... [2023-01-28 11:33:38,194 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2023-01-28 11:33:38,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:33:38,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:33:38,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:33:38,298 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 11:33:38,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 227 transitions, 486 flow [2023-01-28 11:33:38,402 INFO L130 PetriNetUnfolder]: 18/223 cut-off events. [2023-01-28 11:33:38,402 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:33:38,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 223 events. 18/223 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 127 event pairs, 0 based on Foata normal form. 0/204 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2023-01-28 11:33:38,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 227 transitions, 486 flow [2023-01-28 11:33:38,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 211 transitions, 446 flow [2023-01-28 11:33:38,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:33:38,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 211 transitions, 446 flow [2023-01-28 11:33:38,426 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 211 transitions, 446 flow [2023-01-28 11:33:38,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 211 transitions, 446 flow [2023-01-28 11:33:38,464 INFO L130 PetriNetUnfolder]: 18/211 cut-off events. [2023-01-28 11:33:38,465 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:33:38,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 211 events. 18/211 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 126 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 191. Up to 3 conditions per place. [2023-01-28 11:33:38,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 2284 [2023-01-28 11:33:46,274 INFO L134 LiptonReduction]: Checked pairs total: 4694 [2023-01-28 11:33:46,275 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-01-28 11:33:46,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:33:46,294 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;@697a923d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:33:46,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 11:33:46,308 INFO L130 PetriNetUnfolder]: 5/35 cut-off events. [2023-01-28 11:33:46,308 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:33:46,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:46,309 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, 1, 1, 1] [2023-01-28 11:33:46,310 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 11:33:46,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:46,315 INFO L85 PathProgramCache]: Analyzing trace with hash -685861163, now seen corresponding path program 1 times [2023-01-28 11:33:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:46,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907399738] [2023-01-28 11:33:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:46,806 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 11:33:46,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:46,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907399738] [2023-01-28 11:33:46,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907399738] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:33:46,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:33:46,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 11:33:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350643827] [2023-01-28 11:33:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:33:46,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:33:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:33:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:33:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:33:46,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 438 [2023-01-28 11:33:46,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 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 11:33:46,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:33:46,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 438 [2023-01-28 11:33:46,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:33:47,239 INFO L130 PetriNetUnfolder]: 1835/2622 cut-off events. [2023-01-28 11:33:47,239 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2023-01-28 11:33:47,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5331 conditions, 2622 events. 1835/2622 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11831 event pairs, 180 based on Foata normal form. 0/2183 useless extension candidates. Maximal degree in co-relation 4539. Up to 845 conditions per place. [2023-01-28 11:33:47,260 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 76 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2023-01-28 11:33:47,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 373 flow [2023-01-28 11:33:47,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:33:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:33:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1038 transitions. [2023-01-28 11:33:47,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473972602739726 [2023-01-28 11:33:47,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1038 transitions. [2023-01-28 11:33:47,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1038 transitions. [2023-01-28 11:33:47,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:33:47,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1038 transitions. [2023-01-28 11:33:47,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.6) internal successors, (1038), 5 states have internal predecessors, (1038), 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 11:33:47,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 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 11:33:47,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 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 11:33:47,306 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 96 flow. Second operand 5 states and 1038 transitions. [2023-01-28 11:33:47,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 373 flow [2023-01-28 11:33:47,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 83 transitions, 340 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-01-28 11:33:47,319 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 108 flow [2023-01-28 11:33:47,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-01-28 11:33:47,323 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-01-28 11:33:47,324 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 108 flow [2023-01-28 11:33:47,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 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 11:33:47,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:47,325 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, 1, 1, 1] [2023-01-28 11:33:47,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:33:47,325 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 11:33:47,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash 528431825, now seen corresponding path program 2 times [2023-01-28 11:33:47,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:47,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638486346] [2023-01-28 11:33:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:47,507 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 11:33:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:47,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638486346] [2023-01-28 11:33:47,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638486346] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:33:47,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:33:47,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 11:33:47,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292719811] [2023-01-28 11:33:47,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:33:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:33:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:33:47,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:33:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:33:47,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 438 [2023-01-28 11:33:47,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 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 11:33:47,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:33:47,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 438 [2023-01-28 11:33:47,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:33:47,830 INFO L130 PetriNetUnfolder]: 2087/2900 cut-off events. [2023-01-28 11:33:47,830 INFO L131 PetriNetUnfolder]: For 929/929 co-relation queries the response was YES. [2023-01-28 11:33:47,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 2900 events. 2087/2900 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 12872 event pairs, 198 based on Foata normal form. 0/2527 useless extension candidates. Maximal degree in co-relation 3849. Up to 1199 conditions per place. [2023-01-28 11:33:47,846 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 71 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2023-01-28 11:33:47,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 375 flow [2023-01-28 11:33:47,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:33:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:33:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1031 transitions. [2023-01-28 11:33:47,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47077625570776255 [2023-01-28 11:33:47,849 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1031 transitions. [2023-01-28 11:33:47,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1031 transitions. [2023-01-28 11:33:47,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:33:47,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1031 transitions. [2023-01-28 11:33:47,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.2) internal successors, (1031), 5 states have internal predecessors, (1031), 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 11:33:47,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 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 11:33:47,857 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 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 11:33:47,857 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 108 flow. Second operand 5 states and 1031 transitions. [2023-01-28 11:33:47,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 375 flow [2023-01-28 11:33:47,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 80 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:33:47,861 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 149 flow [2023-01-28 11:33:47,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-01-28 11:33:47,863 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-01-28 11:33:47,863 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 149 flow [2023-01-28 11:33:47,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.25) internal successors, (789), 4 states have internal predecessors, (789), 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 11:33:47,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:47,863 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, 1, 1, 1] [2023-01-28 11:33:47,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 11:33:47,864 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 11:33:47,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1985387241, now seen corresponding path program 3 times [2023-01-28 11:33:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:47,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522528549] [2023-01-28 11:33:47,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:47,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:48,198 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 11:33:48,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522528549] [2023-01-28 11:33:48,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522528549] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:33:48,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:33:48,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 11:33:48,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003270465] [2023-01-28 11:33:48,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:33:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 11:33:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:33:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 11:33:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 11:33:48,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 438 [2023-01-28 11:33:48,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 188.33333333333334) internal successors, (1130), 6 states have internal predecessors, (1130), 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 11:33:48,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:33:48,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 438 [2023-01-28 11:33:48,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:33:48,839 INFO L130 PetriNetUnfolder]: 4571/6362 cut-off events. [2023-01-28 11:33:48,839 INFO L131 PetriNetUnfolder]: For 3308/3308 co-relation queries the response was YES. [2023-01-28 11:33:48,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15630 conditions, 6362 events. 4571/6362 cut-off events. For 3308/3308 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 29277 event pairs, 339 based on Foata normal form. 164/6162 useless extension candidates. Maximal degree in co-relation 8501. Up to 2132 conditions per place. [2023-01-28 11:33:48,868 INFO L137 encePairwiseOnDemand]: 431/438 looper letters, 91 selfloop transitions, 7 changer transitions 21/119 dead transitions. [2023-01-28 11:33:48,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 119 transitions, 618 flow [2023-01-28 11:33:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 11:33:48,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 11:33:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1396 transitions. [2023-01-28 11:33:48,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553163731245923 [2023-01-28 11:33:48,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1396 transitions. [2023-01-28 11:33:48,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1396 transitions. [2023-01-28 11:33:48,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:33:48,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1396 transitions. [2023-01-28 11:33:48,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.42857142857142) internal successors, (1396), 7 states have internal predecessors, (1396), 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 11:33:48,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 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 11:33:48,882 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 438.0) internal successors, (3504), 8 states have internal predecessors, (3504), 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 11:33:48,882 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 149 flow. Second operand 7 states and 1396 transitions. [2023-01-28 11:33:48,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 119 transitions, 618 flow [2023-01-28 11:33:48,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 119 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:33:48,893 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 156 flow [2023-01-28 11:33:48,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-01-28 11:33:48,894 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2023-01-28 11:33:48,894 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 156 flow [2023-01-28 11:33:48,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.33333333333334) internal successors, (1130), 6 states have internal predecessors, (1130), 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 11:33:48,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:48,895 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, 1, 1, 1, 1, 1, 1] [2023-01-28 11:33:48,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 11:33:48,895 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 11:33:48,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:48,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2073641848, now seen corresponding path program 1 times [2023-01-28 11:33:48,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:48,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536167276] [2023-01-28 11:33:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:48,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:49,027 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 11:33:49,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536167276] [2023-01-28 11:33:49,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536167276] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:33:49,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:33:49,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:33:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229730685] [2023-01-28 11:33:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:33:49,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:33:49,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:33:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:33:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:33:49,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 438 [2023-01-28 11:33:49,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 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 11:33:49,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:33:49,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 438 [2023-01-28 11:33:49,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:33:49,282 INFO L130 PetriNetUnfolder]: 1897/2812 cut-off events. [2023-01-28 11:33:49,283 INFO L131 PetriNetUnfolder]: For 3281/3281 co-relation queries the response was YES. [2023-01-28 11:33:49,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7253 conditions, 2812 events. 1897/2812 cut-off events. For 3281/3281 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12993 event pairs, 492 based on Foata normal form. 54/2554 useless extension candidates. Maximal degree in co-relation 2968. Up to 2139 conditions per place. [2023-01-28 11:33:49,302 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 45 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-01-28 11:33:49,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 272 flow [2023-01-28 11:33:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:33:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:33:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2023-01-28 11:33:49,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809741248097412 [2023-01-28 11:33:49,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 632 transitions. [2023-01-28 11:33:49,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 632 transitions. [2023-01-28 11:33:49,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:33:49,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 632 transitions. [2023-01-28 11:33:49,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.66666666666666) internal successors, (632), 3 states have internal predecessors, (632), 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 11:33:49,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 11:33:49,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 11:33:49,310 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 156 flow. Second operand 3 states and 632 transitions. [2023-01-28 11:33:49,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 272 flow [2023-01-28 11:33:49,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 244 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-28 11:33:49,316 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 130 flow [2023-01-28 11:33:49,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-01-28 11:33:49,317 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-01-28 11:33:49,317 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 130 flow [2023-01-28 11:33:49,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 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 11:33:49,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:49,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:33:49,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 11:33:49,318 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 11:33:49,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:49,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1604329013, now seen corresponding path program 1 times [2023-01-28 11:33:49,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:49,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156238303] [2023-01-28 11:33:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:49,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:33:49,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:49,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156238303] [2023-01-28 11:33:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156238303] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:33:49,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:33:49,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 11:33:49,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359099563] [2023-01-28 11:33:49,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:33:49,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:33:49,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:33:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:33:49,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:33:49,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 438 [2023-01-28 11:33:49,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 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 11:33:49,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:33:49,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 438 [2023-01-28 11:33:49,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:33:49,784 INFO L130 PetriNetUnfolder]: 2162/3195 cut-off events. [2023-01-28 11:33:49,784 INFO L131 PetriNetUnfolder]: For 1894/1894 co-relation queries the response was YES. [2023-01-28 11:33:49,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8036 conditions, 3195 events. 2162/3195 cut-off events. For 1894/1894 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15056 event pairs, 1534 based on Foata normal form. 44/2841 useless extension candidates. Maximal degree in co-relation 3779. Up to 2560 conditions per place. [2023-01-28 11:33:49,803 INFO L137 encePairwiseOnDemand]: 434/438 looper letters, 34 selfloop transitions, 2 changer transitions 17/58 dead transitions. [2023-01-28 11:33:49,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 281 flow [2023-01-28 11:33:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:33:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:33:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2023-01-28 11:33:49,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2023-01-28 11:33:49,806 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 760 transitions. [2023-01-28 11:33:49,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 760 transitions. [2023-01-28 11:33:49,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:33:49,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 760 transitions. [2023-01-28 11:33:49,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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 11:33:49,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 438.0) internal successors, (2190), 5 states have internal predecessors, (2190), 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 11:33:49,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 438.0) internal successors, (2190), 5 states have internal predecessors, (2190), 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 11:33:49,811 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 130 flow. Second operand 4 states and 760 transitions. [2023-01-28 11:33:49,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 281 flow [2023-01-28 11:33:49,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:33:49,816 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 142 flow [2023-01-28 11:33:49,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2023-01-28 11:33:49,817 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-01-28 11:33:49,817 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 142 flow [2023-01-28 11:33:49,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 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 11:33:49,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:49,817 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:33:49,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 11:33:49,818 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 11:33:49,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:49,818 INFO L85 PathProgramCache]: Analyzing trace with hash 716362356, now seen corresponding path program 1 times [2023-01-28 11:33:49,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:49,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874760038] [2023-01-28 11:33:49,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:49,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:33:49,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874760038] [2023-01-28 11:33:49,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874760038] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:33:49,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:33:49,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 11:33:49,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155837322] [2023-01-28 11:33:49,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:33:49,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:33:49,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:33:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:33:49,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:33:49,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 438 [2023-01-28 11:33:49,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 11:33:49,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:33:49,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 438 [2023-01-28 11:33:49,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:33:50,209 INFO L130 PetriNetUnfolder]: 1464/2239 cut-off events. [2023-01-28 11:33:50,209 INFO L131 PetriNetUnfolder]: For 1464/1464 co-relation queries the response was YES. [2023-01-28 11:33:50,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5761 conditions, 2239 events. 1464/2239 cut-off events. For 1464/1464 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9852 event pairs, 683 based on Foata normal form. 34/2073 useless extension candidates. Maximal degree in co-relation 5738. Up to 1902 conditions per place. [2023-01-28 11:33:50,220 INFO L137 encePairwiseOnDemand]: 435/438 looper letters, 45 selfloop transitions, 2 changer transitions 3/55 dead transitions. [2023-01-28 11:33:50,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 278 flow [2023-01-28 11:33:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:33:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:33:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2023-01-28 11:33:50,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885844748858447 [2023-01-28 11:33:50,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2023-01-28 11:33:50,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2023-01-28 11:33:50,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:33:50,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2023-01-28 11:33:50,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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 11:33:50,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 11:33:50,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 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 11:33:50,226 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 142 flow. Second operand 3 states and 642 transitions. [2023-01-28 11:33:50,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 278 flow [2023-01-28 11:33:50,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 272 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 11:33:50,229 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 148 flow [2023-01-28 11:33:50,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-01-28 11:33:50,230 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-01-28 11:33:50,230 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 148 flow [2023-01-28 11:33:50,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 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 11:33:50,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:50,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:33:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 11:33:50,231 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 11:33:50,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2092257775, now seen corresponding path program 1 times [2023-01-28 11:33:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660654887] [2023-01-28 11:33:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 11:33:50,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660654887] [2023-01-28 11:33:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660654887] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:33:50,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:33:50,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 11:33:50,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088519863] [2023-01-28 11:33:50,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:33:50,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:33:50,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:33:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:33:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:33:50,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 438 [2023-01-28 11:33:50,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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 11:33:50,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:33:50,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 438 [2023-01-28 11:33:50,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:33:50,612 INFO L130 PetriNetUnfolder]: 1572/2450 cut-off events. [2023-01-28 11:33:50,613 INFO L131 PetriNetUnfolder]: For 1768/1768 co-relation queries the response was YES. [2023-01-28 11:33:50,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6582 conditions, 2450 events. 1572/2450 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10885 event pairs, 1205 based on Foata normal form. 22/2270 useless extension candidates. Maximal degree in co-relation 6152. Up to 2077 conditions per place. [2023-01-28 11:33:50,626 INFO L137 encePairwiseOnDemand]: 433/438 looper letters, 36 selfloop transitions, 2 changer transitions 18/61 dead transitions. [2023-01-28 11:33:50,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 313 flow [2023-01-28 11:33:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:33:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:33:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 938 transitions. [2023-01-28 11:33:50,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428310502283105 [2023-01-28 11:33:50,629 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 938 transitions. [2023-01-28 11:33:50,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 938 transitions. [2023-01-28 11:33:50,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:33:50,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 938 transitions. [2023-01-28 11:33:50,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 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 11:33:50,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 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 11:33:50,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 438.0) internal successors, (2628), 6 states have internal predecessors, (2628), 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 11:33:50,635 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 148 flow. Second operand 5 states and 938 transitions. [2023-01-28 11:33:50,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 313 flow [2023-01-28 11:33:50,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:33:50,639 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 162 flow [2023-01-28 11:33:50,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-01-28 11:33:50,640 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2023-01-28 11:33:50,640 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 162 flow [2023-01-28 11:33:50,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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 11:33:50,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:33:50,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:33:50,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 11:33:50,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:33:50,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:33:50,642 INFO L85 PathProgramCache]: Analyzing trace with hash -645640744, now seen corresponding path program 1 times [2023-01-28 11:33:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:33:50,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429922636] [2023-01-28 11:33:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:33:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:33:52,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:33:52,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429922636] [2023-01-28 11:33:52,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429922636] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:33:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501661811] [2023-01-28 11:33:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:33:52,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:33:52,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:33:52,569 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 11:33:52,621 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 11:33:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:33:52,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 55 conjunts are in the unsatisfiable core [2023-01-28 11:33:52,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:33:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:33:53,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 11:33:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:33:53,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 11:33:53,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:33:53,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-01-28 11:33:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:33:53,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:33:54,568 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:33:54,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1987 treesize of output 1799 [2023-01-28 11:33:54,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:33:54,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 418 treesize of output 350 [2023-01-28 11:33:54,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:33:54,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 317 treesize of output 303 [2023-01-28 11:34:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:34:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501661811] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:34:10,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:34:10,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 45 [2023-01-28 11:34:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617308352] [2023-01-28 11:34:10,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:34:10,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-01-28 11:34:10,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:34:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-01-28 11:34:10,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1881, Unknown=5, NotChecked=0, Total=2070 [2023-01-28 11:34:10,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 438 [2023-01-28 11:34:10,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 162 flow. Second operand has 46 states, 46 states have (on average 118.0) internal successors, (5428), 46 states have internal predecessors, (5428), 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 11:34:10,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:34:10,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 438 [2023-01-28 11:34:10,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:34:36,294 WARN L222 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 117 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:34:53,873 WARN L222 SmtUtils]: Spent 11.45s on a formula simplification. DAG size of input: 106 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:35:16,362 WARN L222 SmtUtils]: Spent 15.96s on a formula simplification. DAG size of input: 115 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:35:25,370 WARN L222 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 128 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:35:33,841 WARN L222 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 104 DAG size of output: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:35:51,924 WARN L222 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 119 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:36:00,412 WARN L222 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 91 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:36:09,289 WARN L222 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 108 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:36:35,359 WARN L222 SmtUtils]: Spent 8.13s on a formula simplification. DAG size of input: 66 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:36:48,159 WARN L222 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 117 DAG size of output: 88 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:36:54,567 WARN L222 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 97 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:37:09,386 WARN L222 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 99 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:37:22,224 WARN L222 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 108 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:37:59,104 WARN L222 SmtUtils]: Spent 12.40s on a formula simplification. DAG size of input: 101 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:38:14,826 WARN L222 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 65 DAG size of output: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:38:26,502 INFO L130 PetriNetUnfolder]: 27109/38662 cut-off events. [2023-01-28 11:38:26,502 INFO L131 PetriNetUnfolder]: For 29714/29714 co-relation queries the response was YES. [2023-01-28 11:38:26,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108054 conditions, 38662 events. 27109/38662 cut-off events. For 29714/29714 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 233699 event pairs, 534 based on Foata normal form. 759/36931 useless extension candidates. Maximal degree in co-relation 108031. Up to 6279 conditions per place. [2023-01-28 11:38:26,728 INFO L137 encePairwiseOnDemand]: 412/438 looper letters, 1682 selfloop transitions, 934 changer transitions 311/2927 dead transitions. [2023-01-28 11:38:26,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 2927 transitions, 15133 flow [2023-01-28 11:38:26,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2023-01-28 11:38:26,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2023-01-28 11:38:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 36858 transitions. [2023-01-28 11:38:26,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28720370283790736 [2023-01-28 11:38:26,811 INFO L72 ComplementDD]: Start complementDD. Operand 293 states and 36858 transitions. [2023-01-28 11:38:26,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 293 states and 36858 transitions. [2023-01-28 11:38:26,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:38:26,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 293 states and 36858 transitions. [2023-01-28 11:38:27,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 294 states, 293 states have (on average 125.79522184300342) internal successors, (36858), 293 states have internal predecessors, (36858), 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 11:38:27,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 294 states, 294 states have (on average 438.0) internal successors, (128772), 294 states have internal predecessors, (128772), 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 11:38:27,267 INFO L81 ComplementDD]: Finished complementDD. Result has 294 states, 294 states have (on average 438.0) internal successors, (128772), 294 states have internal predecessors, (128772), 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 11:38:27,267 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 162 flow. Second operand 293 states and 36858 transitions. [2023-01-28 11:38:27,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 2927 transitions, 15133 flow [2023-01-28 11:38:27,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 2927 transitions, 15113 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 11:38:27,350 INFO L231 Difference]: Finished difference. Result has 435 places, 1195 transitions, 7469 flow [2023-01-28 11:38:27,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=438, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=293, PETRI_FLOW=7469, PETRI_PLACES=435, PETRI_TRANSITIONS=1195} [2023-01-28 11:38:27,353 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 391 predicate places. [2023-01-28 11:38:27,353 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 1195 transitions, 7469 flow [2023-01-28 11:38:27,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 118.0) internal successors, (5428), 46 states have internal predecessors, (5428), 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 11:38:27,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:38:27,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:38:27,367 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 11:38:27,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:38:27,568 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 11:38:27,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:38:27,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1127794134, now seen corresponding path program 2 times [2023-01-28 11:38:27,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:38:27,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378806870] [2023-01-28 11:38:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:38:27,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:38:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:38:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:38:29,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:38:29,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378806870] [2023-01-28 11:38:29,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378806870] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:38:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808501619] [2023-01-28 11:38:29,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:38:29,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:38:29,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:38:29,501 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 11:38:29,529 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 11:38:29,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:38:29,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:38:29,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 61 conjunts are in the unsatisfiable core [2023-01-28 11:38:29,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:38:30,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 11:38:30,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 11:38:30,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 11:38:30,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-28 11:38:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 11:38:31,018 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-01-28 11:38:31,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2023-01-28 11:38:31,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-01-28 11:38:31,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-01-28 11:38:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:38:31,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:38:32,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:38:32,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 98 [2023-01-28 11:38:32,562 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:38:32,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2229 treesize of output 2177 [2023-01-28 11:38:32,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:38:32,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2085 treesize of output 1733 [2023-01-28 11:38:32,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:38:32,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1653 treesize of output 1517 [2023-01-28 11:38:32,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 11:38:32,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1298 treesize of output 1270 [2023-01-28 11:38:32,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 230 [2023-01-28 11:45:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:45:42,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808501619] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:45:42,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:45:42,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 49 [2023-01-28 11:45:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908723045] [2023-01-28 11:45:42,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:45:42,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-01-28 11:45:42,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:45:42,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-01-28 11:45:42,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2220, Unknown=15, NotChecked=0, Total=2450 [2023-01-28 11:45:42,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 438 [2023-01-28 11:45:42,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 1195 transitions, 7469 flow. Second operand has 50 states, 50 states have (on average 110.84) internal successors, (5542), 50 states have internal predecessors, (5542), 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 11:45:42,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:45:42,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 438 [2023-01-28 11:45:42,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:45:54,760 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse11 (* c_~front2~0 4))) (let ((.cse8 (+ c_~queue2~0.offset .cse11)) (.cse9 (* c_~W~0 2)) (.cse5 (+ c_~queue1~0.offset (* 4 c_~back1~0))) (.cse3 (+ c_~queue1~0.offset (* c_~front1~0 4))) (.cse4 (* c_~back2~0 4)) (.cse0 (< c_~back2~0 0)) (.cse1 (<= c_~n2~0 c_~back2~0)) (.cse6 (<= c_~n1~0 c_~back1~0)) (.cse7 (< c_~back1~0 0))) (and (or .cse0 .cse1 (forall ((~queue1~0.base Int)) (let ((.cse2 (select |c_#memory_int| ~queue1~0.base))) (or (< (+ (select .cse2 .cse3) 1) (select (select |c_#memory_int| c_~queue2~0.base) (+ c_~queue2~0.offset .cse4))) (not (= (select .cse2 .cse5) 1))))) .cse6 .cse7 (forall ((v_ArrVal_358 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_358) c_~queue2~0.base) .cse8) c_~d2~0) 3))) (forall ((v_ArrVal_358 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_358) c_~queue2~0.base) .cse8) c_~d2~0) (+ .cse9 1))) (= 1 |c_thread2Thread1of1ForFork3_~temp~0#1|) (<= c_~v_assert~0 1) (<= c_~d2~0 .cse9) (<= 1 c_~v_assert~0) (<= |c_thread2Thread1of1ForFork3_~cond~1#1| 1) (<= 1 c_~W~0) (or (< 0 c_~back2~0) .cse0 (< (+ |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) (and (= c_~back2~0 c_~front2~0) (< c_~d2~0 1) (<= |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t4~0#1.base|) (= c_~front1~0 c_~back1~0)) .cse6 .cse7) (<= 1 |c_thread2Thread1of1ForFork3_~cond~1#1|) (or (forall ((v_ArrVal_358 (Array Int Int)) (~queue1~0.base Int) (v_ArrVal_355 (Array Int Int)) (v_ArrVal_357 (Array Int Int)) (v_ArrVal_356 (Array Int Int))) (let ((.cse10 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_355) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_356) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_357))) (let ((.cse12 (select .cse10 ~queue1~0.base))) (or (< (+ (select (select (store .cse10 |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_358) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse11 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) c_~d2~0) 3) (not (= (select .cse12 .cse5) 1)) (< (+ (select .cse12 .cse3) 1) (select (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))))) .cse0 .cse1 (< |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse6 .cse7) (<= c_~d2~0 2)))) is different from false [2023-01-28 11:46:05,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:46:07,852 WARN L839 $PredicateComparison]: unable to prove that (and (< 0 (mod c_~v_assert~0 256)) (forall ((v_ArrVal_358 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_358) c_~queue2~0.base) (+ c_~queue2~0.offset (* c_~front2~0 4))) c_~d2~0) (+ (* c_~W~0 2) 1)))) is different from false [2023-01-28 11:46:18,748 WARN L222 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 79 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:46:27,043 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_358 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_358) c_~queue2~0.base) (+ c_~queue2~0.offset (* c_~front2~0 4))) c_~d2~0) (+ (* c_~W~0 2) 1))) (< 0 (mod |c_thread2Thread1of1ForFork3_~cond~1#1| 256))) is different from false [2023-01-28 11:46:49,342 WARN L222 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 11:46:51,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:46:55,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:46:57,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 11:47:11,587 WARN L222 SmtUtils]: Spent 12.32s on a formula simplification. DAG size of input: 95 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-01-28 11:47:15,436 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:47:15,436 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 11:47:15,752 WARN L238 SmtUtils]: Removed 13 from assertion stack [2023-01-28 11:47:15,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2023-01-28 11:47:15,754 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 11:47:15,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 11:47:15,954 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,SelfDestructingSolverStorable8 [2023-01-28 11:47:15,955 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 91 for 4073ms.. [2023-01-28 11:47:15,957 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 11:47:15,957 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 11:47:15,957 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 11:47:15,957 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 11:47:15,957 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1] [2023-01-28 11:47:15,961 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:47:15,961 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:47:15,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:47:15 BasicIcfg [2023-01-28 11:47:15,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:47:15,964 INFO L158 Benchmark]: Toolchain (without parser) took 818792.50ms. Allocated memory was 337.6MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 296.9MB in the beginning and 1.0GB in the end (delta: -728.5MB). Peak memory consumption was 694.3MB. Max. memory is 16.0GB. [2023-01-28 11:47:15,964 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:47:15,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.37ms. Allocated memory is still 337.6MB. Free memory was 296.9MB in the beginning and 284.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 11:47:15,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.48ms. Allocated memory is still 337.6MB. Free memory was 284.3MB in the beginning and 281.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:47:15,965 INFO L158 Benchmark]: Boogie Preprocessor took 38.87ms. Allocated memory is still 337.6MB. Free memory was 281.9MB in the beginning and 280.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:47:15,965 INFO L158 Benchmark]: RCFGBuilder took 629.44ms. Allocated memory is still 337.6MB. Free memory was 280.1MB in the beginning and 310.2MB in the end (delta: -30.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-01-28 11:47:15,965 INFO L158 Benchmark]: TraceAbstraction took 817779.30ms. Allocated memory was 337.6MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 308.9MB in the beginning and 1.0GB in the end (delta: -716.5MB). Peak memory consumption was 704.7MB. Max. memory is 16.0GB. [2023-01-28 11:47:15,969 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 285.37ms. Allocated memory is still 337.6MB. Free memory was 296.9MB in the beginning and 284.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.48ms. Allocated memory is still 337.6MB. Free memory was 284.3MB in the beginning and 281.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.87ms. Allocated memory is still 337.6MB. Free memory was 281.9MB in the beginning and 280.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 629.44ms. Allocated memory is still 337.6MB. Free memory was 280.1MB in the beginning and 310.2MB in the end (delta: -30.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 817779.30ms. Allocated memory was 337.6MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 308.9MB in the beginning and 1.0GB in the end (delta: -716.5MB). Peak memory consumption was 704.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.8s, 206 PlacesBefore, 44 PlacesAfterwards, 211 TransitionsBefore, 36 TransitionsAfterwards, 2284 CoEnabledTransitionPairs, 8 FixpointIterations, 125 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 8 ConcurrentYvCompositions, 13 ChoiceCompositions, 211 TotalNumberOfCompositions, 4694 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3237, independent: 3115, independent conditional: 0, independent unconditional: 3115, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1268, independent: 1244, independent conditional: 0, independent unconditional: 1244, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3237, independent: 1871, independent conditional: 0, independent unconditional: 1871, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 1268, unknown conditional: 0, unknown unconditional: 1268] , Statistics on independence cache: Total cache size (in pairs): 143, Positive cache size: 133, Positive conditional cache size: 0, Positive unconditional cache size: 133, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 91 for 4073ms.. - TimeoutResultAtElement [Line: 143]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 91 for 4073ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 91 for 4073ms.. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 91 for 4073ms.. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 91 for 4073ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 248 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 817.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 352.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: 1797 mSolverCounterUnknown, 3563 SdHoareTripleChecker+Valid, 35.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3563 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 33.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 857 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 519 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19793 IncrementalHoareTripleChecker+Invalid, 22966 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 519 mSolverCounterUnsat, 0 mSDtfsCounter, 19793 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1797 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 692 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 601 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 63318 ImplicationChecksByTransitivity, 308.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7469occurred in iteration=8, InterpolantAutomatonStates: 325, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 455.0s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 410 ConstructedInterpolants, 32 QuantifiedInterpolants, 6219 SizeOfPredicates, 69 NumberOfNonLiveVariables, 730 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 18/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown