/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:19:00,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:19:00,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:19:00,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:19:00,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:19:00,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:19:00,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:19:00,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:19:00,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:19:00,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:19:00,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:19:00,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:19:00,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:19:00,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:19:00,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:19:00,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:19:00,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:19:00,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:19:00,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:19:00,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:19:00,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:19:00,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:19:00,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:19:00,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:19:00,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:19:00,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:19:00,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:19:00,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:19:00,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:19:00,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:19:00,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:19:00,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:19:00,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:19:00,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:19:00,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:19:00,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:19:00,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:19:00,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:19:00,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:19:00,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:19:00,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:19:00,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-12 12:19:00,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:19:00,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:19:00,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:19:00,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:19:00,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:19:00,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:19:00,665 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:19:00,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:19:00,666 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:19:00,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:19:00,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:19:00,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:19:00,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:19:00,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:19:00,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:19:00,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:19:00,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:19:00,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:19:00,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:19:00,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:19:00,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:19:00,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:19:00,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:19:00,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:19:00,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:19:00,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:19:00,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:19:00,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:19:00,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:19:00,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:19:00,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:19:00,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:19:01,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:19:01,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:19:01,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:19:01,025 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:19:01,026 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:19:01,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-12-12 12:19:02,101 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:19:02,439 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:19:02,440 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2022-12-12 12:19:02,454 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71831fbc/7762c3fbb49e43be90f6aa83539658cd/FLAG63b2014d4 [2022-12-12 12:19:02,469 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71831fbc/7762c3fbb49e43be90f6aa83539658cd [2022-12-12 12:19:02,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:19:02,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:19:02,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:19:02,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:19:02,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:19:02,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:19:02" (1/1) ... [2022-12-12 12:19:02,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32738679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:02, skipping insertion in model container [2022-12-12 12:19:02,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:19:02" (1/1) ... [2022-12-12 12:19:02,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:19:02,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:19:02,653 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-12-12 12:19:02,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:19:02,912 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:19:02,920 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2022-12-12 12:19:02,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:19:03,049 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:19:03,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03 WrapperNode [2022-12-12 12:19:03,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:19:03,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:19:03,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:19:03,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:19:03,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,101 INFO L138 Inliner]: procedures = 364, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-12-12 12:19:03,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:19:03,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:19:03,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:19:03,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:19:03,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,127 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:19:03,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:19:03,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:19:03,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:19:03,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (1/1) ... [2022-12-12 12:19:03,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:19:03,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:03,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 12:19:03,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2022-12-12 12:19:03,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:19:03,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:19:03,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:19:03,200 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:19:03,303 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:19:03,304 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:19:03,447 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:19:03,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:19:03,452 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 12:19:03,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:19:03 BoogieIcfgContainer [2022-12-12 12:19:03,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:19:03,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:19:03,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:19:03,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:19:03,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:19:02" (1/3) ... [2022-12-12 12:19:03,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a2eecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:19:03, skipping insertion in model container [2022-12-12 12:19:03,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:19:03" (2/3) ... [2022-12-12 12:19:03,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63a2eecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:19:03, skipping insertion in model container [2022-12-12 12:19:03,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:19:03" (3/3) ... [2022-12-12 12:19:03,462 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2022-12-12 12:19:03,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:19:03,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:19:03,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:19:03,539 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-12 12:19:03,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 180 flow [2022-12-12 12:19:03,618 INFO L130 PetriNetUnfolder]: 7/85 cut-off events. [2022-12-12 12:19:03,618 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:19:03,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 85 events. 7/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-12-12 12:19:03,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 86 transitions, 180 flow [2022-12-12 12:19:03,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 77 transitions, 160 flow [2022-12-12 12:19:03,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:19:03,644 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;@568c93c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:19:03,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-12 12:19:03,670 INFO L130 PetriNetUnfolder]: 6/76 cut-off events. [2022-12-12 12:19:03,670 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:19:03,671 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:03,671 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:03,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:03,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1610865300, now seen corresponding path program 1 times [2022-12-12 12:19:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:03,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047447636] [2022-12-12 12:19:03,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:03,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:19:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:03,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047447636] [2022-12-12 12:19:03,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047447636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:03,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:03,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 12:19:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133303909] [2022-12-12 12:19:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:04,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 12:19:04,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:04,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 12:19:04,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 12:19:04,044 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 86 [2022-12-12 12:19:04,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:04,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:04,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 86 [2022-12-12 12:19:04,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:04,106 INFO L130 PetriNetUnfolder]: 2/78 cut-off events. [2022-12-12 12:19:04,106 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 12:19:04,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 78 events. 2/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 10/85 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2022-12-12 12:19:04,108 INFO L137 encePairwiseOnDemand]: 79/86 looper letters, 10 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2022-12-12 12:19:04,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 178 flow [2022-12-12 12:19:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 12:19:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 12:19:04,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2022-12-12 12:19:04,121 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.875968992248062 [2022-12-12 12:19:04,124 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2022-12-12 12:19:04,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 178 flow [2022-12-12 12:19:04,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 166 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-12 12:19:04,132 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 166 flow [2022-12-12 12:19:04,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:04,133 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:04,133 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:04,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:19:04,134 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2066346855, now seen corresponding path program 1 times [2022-12-12 12:19:04,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:04,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482101778] [2022-12-12 12:19:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:19:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:04,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482101778] [2022-12-12 12:19:04,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482101778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:19:04,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:19:04,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 12:19:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796639854] [2022-12-12 12:19:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:19:04,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 12:19:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 12:19:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 12:19:04,214 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 86 [2022-12-12 12:19:04,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:04,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:04,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 86 [2022-12-12 12:19:04,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:04,268 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2022-12-12 12:19:04,268 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 12:19:04,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 88 events. 2/88 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 76 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 73. Up to 9 conditions per place. [2022-12-12 12:19:04,269 INFO L137 encePairwiseOnDemand]: 83/86 looper letters, 9 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2022-12-12 12:19:04,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 194 flow [2022-12-12 12:19:04,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 12:19:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 12:19:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2022-12-12 12:19:04,308 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8604651162790697 [2022-12-12 12:19:04,309 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2022-12-12 12:19:04,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 194 flow [2022-12-12 12:19:04,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 188 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-12 12:19:04,310 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 188 flow [2022-12-12 12:19:04,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:04,310 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:04,310 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:04,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:19:04,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:04,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:04,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1689844745, now seen corresponding path program 1 times [2022-12-12 12:19:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:04,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106451188] [2022-12-12 12:19:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:19:04,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:04,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106451188] [2022-12-12 12:19:04,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106451188] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:19:04,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464181811] [2022-12-12 12:19:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:04,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:04,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:04,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:19:04,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 12:19:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:04,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 12:19:04,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:19:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:19:04,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:19:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:19:04,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464181811] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:19:04,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:19:04,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 12:19:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669869355] [2022-12-12 12:19:04,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:19:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:19:04,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:04,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:19:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:19:04,726 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 86 [2022-12-12 12:19:04,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 188 flow. Second operand has 10 states, 10 states have (on average 70.9) internal successors, (709), 10 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:04,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:04,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 86 [2022-12-12 12:19:04,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:04,822 INFO L130 PetriNetUnfolder]: 2/101 cut-off events. [2022-12-12 12:19:04,823 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-12 12:19:04,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 101 events. 2/101 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 105. Up to 10 conditions per place. [2022-12-12 12:19:04,824 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 9 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2022-12-12 12:19:04,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 244 flow [2022-12-12 12:19:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:19:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:19:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 641 transitions. [2022-12-12 12:19:04,828 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8281653746770026 [2022-12-12 12:19:04,829 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 8 predicate places. [2022-12-12 12:19:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 244 flow [2022-12-12 12:19:04,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 214 flow, removed 13 selfloop flow, removed 2 redundant places. [2022-12-12 12:19:04,830 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 214 flow [2022-12-12 12:19:04,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.9) internal successors, (709), 10 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:04,831 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:04,831 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:04,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 12:19:05,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:05,037 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:05,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:05,038 INFO L85 PathProgramCache]: Analyzing trace with hash -878479561, now seen corresponding path program 2 times [2022-12-12 12:19:05,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:05,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19091179] [2022-12-12 12:19:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:05,179 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-12 12:19:05,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:05,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19091179] [2022-12-12 12:19:05,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19091179] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:19:05,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099702208] [2022-12-12 12:19:05,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 12:19:05,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:05,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:05,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:19:05,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 12:19:05,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 12:19:05,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:19:05,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-12 12:19:05,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:19:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-12 12:19:05,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:19:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-12 12:19:05,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099702208] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:19:05,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:19:05,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 12:19:05,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008198724] [2022-12-12 12:19:05,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:19:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:19:05,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:05,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:19:05,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:19:05,356 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 86 [2022-12-12 12:19:05,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 214 flow. Second operand has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:05,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:05,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 86 [2022-12-12 12:19:05,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:05,463 INFO L130 PetriNetUnfolder]: 2/111 cut-off events. [2022-12-12 12:19:05,463 INFO L131 PetriNetUnfolder]: For 5/19 co-relation queries the response was YES. [2022-12-12 12:19:05,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 111 events. 2/111 cut-off events. For 5/19 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 7/115 useless extension candidates. Maximal degree in co-relation 96. Up to 10 conditions per place. [2022-12-12 12:19:05,464 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 10 selfloop transitions, 9 changer transitions 0/89 dead transitions. [2022-12-12 12:19:05,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 272 flow [2022-12-12 12:19:05,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:19:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:19:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 633 transitions. [2022-12-12 12:19:05,467 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8178294573643411 [2022-12-12 12:19:05,468 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 14 predicate places. [2022-12-12 12:19:05,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 272 flow [2022-12-12 12:19:05,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 240 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-12-12 12:19:05,469 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 240 flow [2022-12-12 12:19:05,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.0) internal successors, (700), 10 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:05,470 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:05,470 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:05,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 12:19:05,678 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,SelfDestructingSolverStorable3 [2022-12-12 12:19:05,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1192873735, now seen corresponding path program 3 times [2022-12-12 12:19:05,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:05,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447799661] [2022-12-12 12:19:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:05,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-12 12:19:05,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:05,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447799661] [2022-12-12 12:19:05,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447799661] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:19:05,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358267177] [2022-12-12 12:19:05,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 12:19:05,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:05,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:05,873 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:19:05,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 12:19:05,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 12:19:05,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:19:05,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 12:19:05,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:19:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-12 12:19:06,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:19:06,102 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-12 12:19:06,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358267177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:19:06,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:19:06,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-12 12:19:06,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324868595] [2022-12-12 12:19:06,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:19:06,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 12:19:06,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 12:19:06,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-12 12:19:06,108 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 86 [2022-12-12 12:19:06,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 240 flow. Second operand has 18 states, 18 states have (on average 70.0) internal successors, (1260), 18 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:06,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:06,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 86 [2022-12-12 12:19:06,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:06,282 INFO L130 PetriNetUnfolder]: 2/143 cut-off events. [2022-12-12 12:19:06,282 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-12-12 12:19:06,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 143 events. 2/143 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 92 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 163. Up to 12 conditions per place. [2022-12-12 12:19:06,284 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 14 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2022-12-12 12:19:06,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 374 flow [2022-12-12 12:19:06,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 12:19:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 12:19:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1467 transitions. [2022-12-12 12:19:06,287 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8122923588039868 [2022-12-12 12:19:06,288 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 32 predicate places. [2022-12-12 12:19:06,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 374 flow [2022-12-12 12:19:06,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 334 flow, removed 14 selfloop flow, removed 6 redundant places. [2022-12-12 12:19:06,290 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 105 transitions, 334 flow [2022-12-12 12:19:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.0) internal successors, (1260), 18 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:06,291 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:06,291 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:06,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 12:19:06,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:06,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 647215361, now seen corresponding path program 4 times [2022-12-12 12:19:06,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:06,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127985360] [2022-12-12 12:19:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:06,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-12 12:19:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127985360] [2022-12-12 12:19:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127985360] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:19:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237393738] [2022-12-12 12:19:06,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 12:19:06,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:06,642 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:19:06,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 12:19:06,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 12:19:06,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:19:06,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-12 12:19:06,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:19:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-12 12:19:06,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:19:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-12 12:19:06,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237393738] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:19:06,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:19:06,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-12 12:19:06,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631194157] [2022-12-12 12:19:06,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:19:06,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 12:19:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:06,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 12:19:06,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-12 12:19:06,917 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 86 [2022-12-12 12:19:06,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 105 transitions, 334 flow. Second operand has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:06,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:06,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 86 [2022-12-12 12:19:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:07,068 INFO L130 PetriNetUnfolder]: 2/187 cut-off events. [2022-12-12 12:19:07,068 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-12 12:19:07,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 187 events. 2/187 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 137 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 184. Up to 12 conditions per place. [2022-12-12 12:19:07,073 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 13 selfloop transitions, 21 changer transitions 0/121 dead transitions. [2022-12-12 12:19:07,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 466 flow [2022-12-12 12:19:07,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 12:19:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 12:19:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1487 transitions. [2022-12-12 12:19:07,076 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8233665559246954 [2022-12-12 12:19:07,078 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 46 predicate places. [2022-12-12 12:19:07,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 466 flow [2022-12-12 12:19:07,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 428 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-12-12 12:19:07,083 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 121 transitions, 428 flow [2022-12-12 12:19:07,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.94444444444444) internal successors, (1277), 18 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:07,084 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:07,084 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:07,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 12:19:07,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:07,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1889512705, now seen corresponding path program 5 times [2022-12-12 12:19:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:07,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391197106] [2022-12-12 12:19:07,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:07,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:07,731 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-12-12 12:19:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391197106] [2022-12-12 12:19:07,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391197106] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:19:07,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406590881] [2022-12-12 12:19:07,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 12:19:07,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:07,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:07,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:19:07,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 12:19:07,876 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-12 12:19:07,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:19:07,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 12:19:07,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:19:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-12-12 12:19:08,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:19:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-12-12 12:19:08,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406590881] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:19:08,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:19:08,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 47 [2022-12-12 12:19:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326807981] [2022-12-12 12:19:08,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:19:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-12 12:19:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:08,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-12 12:19:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2022-12-12 12:19:08,403 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2022-12-12 12:19:08,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 121 transitions, 428 flow. Second operand has 47 states, 47 states have (on average 63.276595744680854) internal successors, (2974), 47 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:08,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:08,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2022-12-12 12:19:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:19:55,137 INFO L130 PetriNetUnfolder]: 2395/7572 cut-off events. [2022-12-12 12:19:55,137 INFO L131 PetriNetUnfolder]: For 6189/6189 co-relation queries the response was YES. [2022-12-12 12:19:55,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19838 conditions, 7572 events. 2395/7572 cut-off events. For 6189/6189 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 56544 event pairs, 16 based on Foata normal form. 367/7933 useless extension candidates. Maximal degree in co-relation 1202. Up to 988 conditions per place. [2022-12-12 12:19:55,178 INFO L137 encePairwiseOnDemand]: 75/86 looper letters, 1078 selfloop transitions, 2047 changer transitions 0/3179 dead transitions. [2022-12-12 12:19:55,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1127 places, 3179 transitions, 22318 flow [2022-12-12 12:19:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2022-12-12 12:19:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2022-12-12 12:19:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 65146 transitions. [2022-12-12 12:19:55,232 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7477903533138961 [2022-12-12 12:19:55,232 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 1052 predicate places. [2022-12-12 12:19:55,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1127 places, 3179 transitions, 22318 flow [2022-12-12 12:19:55,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1091 places, 3179 transitions, 18280 flow, removed 813 selfloop flow, removed 36 redundant places. [2022-12-12 12:19:55,313 INFO L495 AbstractCegarLoop]: Abstraction has has 1091 places, 3179 transitions, 18280 flow [2022-12-12 12:19:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 63.276595744680854) internal successors, (2974), 47 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:55,314 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:19:55,314 INFO L214 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:19:55,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 12:19:55,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:55,521 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:19:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:19:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1601534335, now seen corresponding path program 6 times [2022-12-12 12:19:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:19:55,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868971780] [2022-12-12 12:19:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:19:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:19:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:19:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-12-12 12:19:56,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:19:56,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868971780] [2022-12-12 12:19:56,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868971780] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:19:56,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096566800] [2022-12-12 12:19:56,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 12:19:56,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:19:56,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:19:56,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:19:56,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 12:19:56,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-12-12 12:19:56,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:19:56,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-12 12:19:56,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:19:56,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-12-12 12:19:56,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:19:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1171 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-12-12 12:19:57,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096566800] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:19:57,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:19:57,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 43 [2022-12-12 12:19:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750745732] [2022-12-12 12:19:57,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:19:57,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-12 12:19:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:19:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-12 12:19:57,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-12-12 12:19:57,258 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 86 [2022-12-12 12:19:57,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1091 places, 3179 transitions, 18280 flow. Second operand has 43 states, 43 states have (on average 70.04651162790698) internal successors, (3012), 43 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:19:57,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:19:57,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 86 [2022-12-12 12:19:57,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:00,570 INFO L130 PetriNetUnfolder]: 3155/10412 cut-off events. [2022-12-12 12:20:00,570 INFO L131 PetriNetUnfolder]: For 8650/8650 co-relation queries the response was YES. [2022-12-12 12:20:00,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26025 conditions, 10412 events. 3155/10412 cut-off events. For 8650/8650 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 80859 event pairs, 66 based on Foata normal form. 190/10557 useless extension candidates. Maximal degree in co-relation 1280. Up to 1368 conditions per place. [2022-12-12 12:20:00,704 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 533 selfloop transitions, 1380 changer transitions 0/3639 dead transitions. [2022-12-12 12:20:00,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1150 places, 3639 transitions, 25326 flow [2022-12-12 12:20:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-12 12:20:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-12 12:20:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4172 transitions. [2022-12-12 12:20:00,715 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8085271317829458 [2022-12-12 12:20:00,716 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 1075 predicate places. [2022-12-12 12:20:00,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1150 places, 3639 transitions, 25326 flow [2022-12-12 12:20:00,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1108 places, 3639 transitions, 22742 flow, removed 326 selfloop flow, removed 42 redundant places. [2022-12-12 12:20:00,875 INFO L495 AbstractCegarLoop]: Abstraction has has 1108 places, 3639 transitions, 22742 flow [2022-12-12 12:20:00,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 70.04651162790698) internal successors, (3012), 43 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:20:00,876 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:00,877 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:00,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 12:20:01,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:20:01,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:20:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:01,085 INFO L85 PathProgramCache]: Analyzing trace with hash -19624880, now seen corresponding path program 7 times [2022-12-12 12:20:01,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674939760] [2022-12-12 12:20:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:01,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:01,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 624 proven. 316 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2022-12-12 12:20:01,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:01,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674939760] [2022-12-12 12:20:01,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674939760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:20:01,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593216387] [2022-12-12 12:20:01,532 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 12:20:01,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:20:01,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:20:01,548 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:20:01,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 12:20:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:01,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 12:20:01,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:20:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 624 proven. 316 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2022-12-12 12:20:01,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:20:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 624 proven. 316 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2022-12-12 12:20:02,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593216387] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:20:02,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:20:02,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-12-12 12:20:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015022802] [2022-12-12 12:20:02,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:20:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-12 12:20:02,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-12 12:20:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=1026, Unknown=0, NotChecked=0, Total=1406 [2022-12-12 12:20:02,289 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 86 [2022-12-12 12:20:02,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1108 places, 3639 transitions, 22742 flow. Second operand has 38 states, 38 states have (on average 70.97368421052632) internal successors, (2697), 38 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:20:02,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:02,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 86 [2022-12-12 12:20:02,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:07,014 INFO L130 PetriNetUnfolder]: 5977/19233 cut-off events. [2022-12-12 12:20:07,014 INFO L131 PetriNetUnfolder]: For 30070/30070 co-relation queries the response was YES. [2022-12-12 12:20:07,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53416 conditions, 19233 events. 5977/19233 cut-off events. For 30070/30070 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 165082 event pairs, 508 based on Foata normal form. 747/19904 useless extension candidates. Maximal degree in co-relation 1190. Up to 2592 conditions per place. [2022-12-12 12:20:07,100 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 926 selfloop transitions, 2244 changer transitions 0/5135 dead transitions. [2022-12-12 12:20:07,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1158 places, 5135 transitions, 40258 flow [2022-12-12 12:20:07,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 12:20:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 12:20:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3602 transitions. [2022-12-12 12:20:07,102 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.82124943000456 [2022-12-12 12:20:07,103 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 1083 predicate places. [2022-12-12 12:20:07,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1158 places, 5135 transitions, 40258 flow [2022-12-12 12:20:07,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1137 places, 5135 transitions, 36734 flow, removed 838 selfloop flow, removed 21 redundant places. [2022-12-12 12:20:07,202 INFO L495 AbstractCegarLoop]: Abstraction has has 1137 places, 5135 transitions, 36734 flow [2022-12-12 12:20:07,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 70.97368421052632) internal successors, (2697), 38 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:20:07,203 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:07,204 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:07,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 12:20:07,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:20:07,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:20:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:07,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1069376078, now seen corresponding path program 8 times [2022-12-12 12:20:07,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:07,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323756270] [2022-12-12 12:20:07,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:07,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:08,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 0 proven. 2226 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2022-12-12 12:20:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:08,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323756270] [2022-12-12 12:20:08,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323756270] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:20:08,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105010057] [2022-12-12 12:20:08,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 12:20:08,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:20:08,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:20:08,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:20:08,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 12:20:08,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 12:20:08,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:20:08,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-12 12:20:08,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:20:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 0 proven. 2226 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2022-12-12 12:20:09,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:20:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3053 backedges. 0 proven. 2226 refuted. 0 times theorem prover too weak. 827 trivial. 0 not checked. [2022-12-12 12:20:09,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105010057] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:20:09,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:20:09,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 43 [2022-12-12 12:20:09,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761153957] [2022-12-12 12:20:09,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:20:09,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-12 12:20:09,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:09,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-12 12:20:09,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2022-12-12 12:20:09,868 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 86 [2022-12-12 12:20:09,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1137 places, 5135 transitions, 36734 flow. Second operand has 43 states, 43 states have (on average 71.02325581395348) internal successors, (3054), 43 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:20:09,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:09,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 86 [2022-12-12 12:20:09,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:20:15,449 INFO L130 PetriNetUnfolder]: 6973/22477 cut-off events. [2022-12-12 12:20:15,449 INFO L131 PetriNetUnfolder]: For 46934/46934 co-relation queries the response was YES. [2022-12-12 12:20:15,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66271 conditions, 22477 events. 6973/22477 cut-off events. For 46934/46934 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 196005 event pairs, 664 based on Foata normal form. 249/22633 useless extension candidates. Maximal degree in co-relation 1190. Up to 3024 conditions per place. [2022-12-12 12:20:15,538 INFO L137 encePairwiseOnDemand]: 80/86 looper letters, 1058 selfloop transitions, 2640 changer transitions 0/5663 dead transitions. [2022-12-12 12:20:15,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1196 places, 5663 transitions, 48882 flow [2022-12-12 12:20:15,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-12 12:20:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-12 12:20:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4229 transitions. [2022-12-12 12:20:15,541 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8195736434108527 [2022-12-12 12:20:15,541 INFO L295 CegarLoopForPetriNet]: 75 programPoint places, 1121 predicate places. [2022-12-12 12:20:15,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1196 places, 5663 transitions, 48882 flow [2022-12-12 12:20:15,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1148 places, 5663 transitions, 42542 flow, removed 1058 selfloop flow, removed 48 redundant places. [2022-12-12 12:20:15,657 INFO L495 AbstractCegarLoop]: Abstraction has has 1148 places, 5663 transitions, 42542 flow [2022-12-12 12:20:15,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 71.02325581395348) internal successors, (3054), 43 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:20:15,658 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:20:15,658 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:20:15,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 12:20:15,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 12:20:15,864 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:20:15,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:20:15,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1471517106, now seen corresponding path program 9 times [2022-12-12 12:20:15,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:20:15,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606249392] [2022-12-12 12:20:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:20:15,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:20:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:20:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:20:19,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:20:19,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606249392] [2022-12-12 12:20:19,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606249392] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:20:19,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747881462] [2022-12-12 12:20:19,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 12:20:19,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:20:19,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:20:19,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:20:19,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 12:20:20,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2022-12-12 12:20:20,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:20:20,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 168 conjunts are in the unsatisfiable core [2022-12-12 12:20:20,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:20:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:20:21,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:20:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3650 backedges. 0 proven. 3650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:20:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747881462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:20:22,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:20:22,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70, 70] total 72 [2022-12-12 12:20:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988331269] [2022-12-12 12:20:22,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:20:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-12 12:20:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:20:22,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-12 12:20:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=4969, Unknown=0, NotChecked=0, Total=5112 [2022-12-12 12:20:22,062 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 86 [2022-12-12 12:20:22,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1148 places, 5663 transitions, 42542 flow. Second operand has 72 states, 72 states have (on average 65.29166666666667) internal successors, (4701), 72 states have internal predecessors, (4701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:20:22,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:20:22,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 86 [2022-12-12 12:20:22,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand