/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:04:01,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:04:01,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:04:01,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:04:01,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:04:01,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:04:01,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:04:01,757 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:04:01,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:04:01,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:04:01,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:04:01,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:04:01,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:04:01,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:04:01,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:04:01,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:04:01,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:04:01,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:04:01,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:04:01,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:04:01,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:04:01,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:04:01,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:04:01,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:04:01,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:04:01,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:04:01,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:04:01,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:04:01,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:04:01,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:04:01,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:04:01,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:04:01,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:04:01,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:04:01,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:04:01,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:04:01,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:04:01,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:04:01,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:04:01,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:04:01,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:04:01,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 07:04:01,808 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:04:01,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:04:01,812 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:04:01,813 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:04:01,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:04:01,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:04:01,814 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:04:01,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:04:01,814 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:04:01,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:04:01,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:04:01,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:04:01,816 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:04:01,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:04:01,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:04:01,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:01,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:04:01,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:04:01,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:04:01,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:04:01,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:04:01,821 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:04:01,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:04:01,821 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:04:02,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:04:02,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:04:02,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:04:02,031 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:04:02,031 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:04:02,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-01-28 07:04:03,066 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:04:03,224 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:04:03,224 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-01-28 07:04:03,235 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65a16e52/d642481f5b974933b61be9833fd31347/FLAG4184dedb1 [2023-01-28 07:04:03,245 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65a16e52/d642481f5b974933b61be9833fd31347 [2023-01-28 07:04:03,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:04:03,248 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:04:03,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:03,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:04:03,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:04:03,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41540f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03, skipping insertion in model container [2023-01-28 07:04:03,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:04:03,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:04:03,386 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2023-01-28 07:04:03,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:03,516 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:04:03,530 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2023-01-28 07:04:03,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:03,604 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:03,605 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:03,610 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:04:03,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03 WrapperNode [2023-01-28 07:04:03,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:03,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:03,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:04:03,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:04:03,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,645 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 07:04:03,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:03,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:04:03,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:04:03,646 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:04:03,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,661 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:04:03,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:04:03,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:04:03,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:04:03,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (1/1) ... [2023-01-28 07:04:03,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:03,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:04:03,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 07:04:03,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 07:04:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:04:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:04:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:04:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:04:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:04:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:04:03,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:04:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:04:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:04:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:04:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:04:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:04:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:04:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:04:03,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:04:03,720 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 07:04:03,876 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:04:03,877 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:04:04,057 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:04:04,061 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:04:04,062 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:04:04,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:04 BoogieIcfgContainer [2023-01-28 07:04:04,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:04:04,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:04:04,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:04:04,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:04:04,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:04:03" (1/3) ... [2023-01-28 07:04:04,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f02659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:04, skipping insertion in model container [2023-01-28 07:04:04,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:03" (2/3) ... [2023-01-28 07:04:04,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f02659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:04, skipping insertion in model container [2023-01-28 07:04:04,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:04" (3/3) ... [2023-01-28 07:04:04,068 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2023-01-28 07:04:04,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:04:04,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:04:04,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:04:04,156 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:04:04,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:04:04,242 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-28 07:04:04,243 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-28 07:04:04,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:04:04,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:04,253 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:04:04,269 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:04,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:04,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:04,302 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-28 07:04:04,302 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:04,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-28 07:04:04,304 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:04:05,682 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-01-28 07:04:05,682 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-28 07:04:05,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:04:05,704 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;@5be66012, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:04:05,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:04:05,708 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-28 07:04:05,709 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:05,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:05,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:05,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:05,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash -856235508, now seen corresponding path program 1 times [2023-01-28 07:04:05,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:05,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568548124] [2023-01-28 07:04:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:05,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:06,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568548124] [2023-01-28 07:04:06,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568548124] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:06,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:06,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:04:06,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225002267] [2023-01-28 07:04:06,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:06,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:06,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:06,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:06,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:04:06,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 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) [2023-01-28 07:04:06,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:06,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:04:06,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:06,234 INFO L130 PetriNetUnfolder]: 573/928 cut-off events. [2023-01-28 07:04:06,234 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-01-28 07:04:06,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 928 events. 573/928 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4189 event pairs, 207 based on Foata normal form. 50/978 useless extension candidates. Maximal degree in co-relation 1904. Up to 539 conditions per place. [2023-01-28 07:04:06,242 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-01-28 07:04:06,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-01-28 07:04:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-01-28 07:04:06,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5731414868105515 [2023-01-28 07:04:06,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-01-28 07:04:06,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-01-28 07:04:06,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:06,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-01-28 07:04:06,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,273 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 239 transitions. [2023-01-28 07:04:06,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-01-28 07:04:06,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:06,276 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-01-28 07:04:06,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-01-28 07:04:06,282 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-28 07:04:06,282 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-01-28 07:04:06,283 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) [2023-01-28 07:04:06,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:06,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:06,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:04:06,283 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:06,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:06,287 INFO L85 PathProgramCache]: Analyzing trace with hash -773497558, now seen corresponding path program 1 times [2023-01-28 07:04:06,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:06,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616161894] [2023-01-28 07:04:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:06,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:06,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616161894] [2023-01-28 07:04:06,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616161894] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:06,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:06,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401999599] [2023-01-28 07:04:06,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:06,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:06,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:06,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:06,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:06,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:04:06,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:06,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:04:06,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:06,570 INFO L130 PetriNetUnfolder]: 550/893 cut-off events. [2023-01-28 07:04:06,570 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-01-28 07:04:06,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 893 events. 550/893 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3781 event pairs, 89 based on Foata normal form. 6/899 useless extension candidates. Maximal degree in co-relation 2422. Up to 446 conditions per place. [2023-01-28 07:04:06,575 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 30 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-01-28 07:04:06,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 224 flow [2023-01-28 07:04:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-01-28 07:04:06,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665467625899281 [2023-01-28 07:04:06,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-01-28 07:04:06,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-01-28 07:04:06,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:06,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-01-28 07:04:06,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,583 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,583 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 315 transitions. [2023-01-28 07:04:06,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 224 flow [2023-01-28 07:04:06,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:06,587 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 134 flow [2023-01-28 07:04:06,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-01-28 07:04:06,588 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-01-28 07:04:06,589 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 134 flow [2023-01-28 07:04:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:06,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:06,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:04:06,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:06,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:06,589 INFO L85 PathProgramCache]: Analyzing trace with hash -773498240, now seen corresponding path program 1 times [2023-01-28 07:04:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189530734] [2023-01-28 07:04:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:06,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189530734] [2023-01-28 07:04:06,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189530734] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:06,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:06,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:06,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481214817] [2023-01-28 07:04:06,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:06,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:06,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:06,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:06,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:04:06,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:06,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:04:06,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:06,822 INFO L130 PetriNetUnfolder]: 526/855 cut-off events. [2023-01-28 07:04:06,823 INFO L131 PetriNetUnfolder]: For 471/471 co-relation queries the response was YES. [2023-01-28 07:04:06,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 855 events. 526/855 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3641 event pairs, 79 based on Foata normal form. 4/859 useless extension candidates. Maximal degree in co-relation 2516. Up to 476 conditions per place. [2023-01-28 07:04:06,827 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 34 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2023-01-28 07:04:06,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 292 flow [2023-01-28 07:04:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-01-28 07:04:06,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-28 07:04:06,829 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-01-28 07:04:06,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-01-28 07:04:06,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:06,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-01-28 07:04:06,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,831 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,831 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 134 flow. Second operand 4 states and 316 transitions. [2023-01-28 07:04:06,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 292 flow [2023-01-28 07:04:06,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:04:06,834 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 222 flow [2023-01-28 07:04:06,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-01-28 07:04:06,835 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-28 07:04:06,837 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 222 flow [2023-01-28 07:04:06,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:06,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:06,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:04:06,838 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:06,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:06,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1791378210, now seen corresponding path program 1 times [2023-01-28 07:04:06,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:06,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871957301] [2023-01-28 07:04:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:06,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:06,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:06,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871957301] [2023-01-28 07:04:06,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871957301] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:06,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:06,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:06,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511076704] [2023-01-28 07:04:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:06,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:06,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:06,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:06,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 07:04:06,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:06,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:06,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 07:04:06,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:07,079 INFO L130 PetriNetUnfolder]: 310/600 cut-off events. [2023-01-28 07:04:07,080 INFO L131 PetriNetUnfolder]: For 1324/1386 co-relation queries the response was YES. [2023-01-28 07:04:07,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1927 conditions, 600 events. 310/600 cut-off events. For 1324/1386 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3233 event pairs, 55 based on Foata normal form. 73/654 useless extension candidates. Maximal degree in co-relation 1908. Up to 330 conditions per place. [2023-01-28 07:04:07,083 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 48 selfloop transitions, 8 changer transitions 5/72 dead transitions. [2023-01-28 07:04:07,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 72 transitions, 588 flow [2023-01-28 07:04:07,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:04:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:04:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-01-28 07:04:07,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-01-28 07:04:07,085 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-01-28 07:04:07,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-01-28 07:04:07,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:07,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-01-28 07:04:07,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,090 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,090 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 222 flow. Second operand 5 states and 394 transitions. [2023-01-28 07:04:07,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 72 transitions, 588 flow [2023-01-28 07:04:07,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 72 transitions, 588 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:04:07,095 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 282 flow [2023-01-28 07:04:07,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-01-28 07:04:07,096 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 07:04:07,096 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 282 flow [2023-01-28 07:04:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:07,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:07,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:04:07,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:07,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash -352740669, now seen corresponding path program 1 times [2023-01-28 07:04:07,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:07,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082229770] [2023-01-28 07:04:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:07,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:07,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082229770] [2023-01-28 07:04:07,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082229770] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:07,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:07,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:07,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351904444] [2023-01-28 07:04:07,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:07,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:04:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:07,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:04:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:04:07,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 07:04:07,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:07,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 07:04:07,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:07,343 INFO L130 PetriNetUnfolder]: 276/555 cut-off events. [2023-01-28 07:04:07,343 INFO L131 PetriNetUnfolder]: For 1719/1911 co-relation queries the response was YES. [2023-01-28 07:04:07,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 555 events. 276/555 cut-off events. For 1719/1911 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3049 event pairs, 22 based on Foata normal form. 151/688 useless extension candidates. Maximal degree in co-relation 2289. Up to 251 conditions per place. [2023-01-28 07:04:07,346 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 52 selfloop transitions, 15 changer transitions 11/89 dead transitions. [2023-01-28 07:04:07,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 786 flow [2023-01-28 07:04:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2023-01-28 07:04:07,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566289825282631 [2023-01-28 07:04:07,348 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2023-01-28 07:04:07,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2023-01-28 07:04:07,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:07,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2023-01-28 07:04:07,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,351 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 282 flow. Second operand 7 states and 551 transitions. [2023-01-28 07:04:07,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 786 flow [2023-01-28 07:04:07,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 782 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:07,356 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 377 flow [2023-01-28 07:04:07,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-01-28 07:04:07,358 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-01-28 07:04:07,358 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 377 flow [2023-01-28 07:04:07,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:07,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:07,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:04:07,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:07,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash 452420666, now seen corresponding path program 1 times [2023-01-28 07:04:07,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:07,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918229897] [2023-01-28 07:04:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:07,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:07,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918229897] [2023-01-28 07:04:07,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918229897] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:07,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:07,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103032030] [2023-01-28 07:04:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:07,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:07,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:07,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-28 07:04:07,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:07,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-28 07:04:07,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:07,575 INFO L130 PetriNetUnfolder]: 496/879 cut-off events. [2023-01-28 07:04:07,575 INFO L131 PetriNetUnfolder]: For 4076/4076 co-relation queries the response was YES. [2023-01-28 07:04:07,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 879 events. 496/879 cut-off events. For 4076/4076 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4349 event pairs, 33 based on Foata normal form. 7/886 useless extension candidates. Maximal degree in co-relation 4298. Up to 534 conditions per place. [2023-01-28 07:04:07,578 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 46 selfloop transitions, 22 changer transitions 39/107 dead transitions. [2023-01-28 07:04:07,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 107 transitions, 1071 flow [2023-01-28 07:04:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:04:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:04:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 385 transitions. [2023-01-28 07:04:07,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-28 07:04:07,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 385 transitions. [2023-01-28 07:04:07,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 385 transitions. [2023-01-28 07:04:07,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:07,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 385 transitions. [2023-01-28 07:04:07,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,582 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,582 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 377 flow. Second operand 5 states and 385 transitions. [2023-01-28 07:04:07,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 107 transitions, 1071 flow [2023-01-28 07:04:07,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 107 transitions, 954 flow, removed 44 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:07,593 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 451 flow [2023-01-28 07:04:07,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-01-28 07:04:07,595 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-01-28 07:04:07,595 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 451 flow [2023-01-28 07:04:07,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:07,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:07,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:04:07,595 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:07,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1942239925, now seen corresponding path program 1 times [2023-01-28 07:04:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572542952] [2023-01-28 07:04:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:07,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:07,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572542952] [2023-01-28 07:04:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572542952] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:07,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305913182] [2023-01-28 07:04:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:07,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:07,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-01-28 07:04:07,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 451 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:07,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-01-28 07:04:07,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:07,739 INFO L130 PetriNetUnfolder]: 232/478 cut-off events. [2023-01-28 07:04:07,739 INFO L131 PetriNetUnfolder]: For 1957/1957 co-relation queries the response was YES. [2023-01-28 07:04:07,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2416 conditions, 478 events. 232/478 cut-off events. For 1957/1957 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2204 event pairs, 44 based on Foata normal form. 2/480 useless extension candidates. Maximal degree in co-relation 2384. Up to 236 conditions per place. [2023-01-28 07:04:07,741 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 38 selfloop transitions, 19 changer transitions 17/74 dead transitions. [2023-01-28 07:04:07,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 776 flow [2023-01-28 07:04:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:07,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-01-28 07:04:07,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-01-28 07:04:07,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-01-28 07:04:07,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-01-28 07:04:07,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:07,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-01-28 07:04:07,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,744 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,744 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 451 flow. Second operand 4 states and 316 transitions. [2023-01-28 07:04:07,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 776 flow [2023-01-28 07:04:07,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 740 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-01-28 07:04:07,750 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 429 flow [2023-01-28 07:04:07,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=429, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-01-28 07:04:07,750 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-01-28 07:04:07,750 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 429 flow [2023-01-28 07:04:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:07,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:04:07,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 07:04:07,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash -138861841, now seen corresponding path program 2 times [2023-01-28 07:04:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:07,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412602440] [2023-01-28 07:04:07,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:07,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:04:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412602440] [2023-01-28 07:04:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412602440] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463612158] [2023-01-28 07:04:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:07,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:04:07,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:04:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:04:07,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-28 07:04:07,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:07,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-28 07:04:07,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:07,919 INFO L130 PetriNetUnfolder]: 111/262 cut-off events. [2023-01-28 07:04:07,919 INFO L131 PetriNetUnfolder]: For 1248/1288 co-relation queries the response was YES. [2023-01-28 07:04:07,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 262 events. 111/262 cut-off events. For 1248/1288 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1230 event pairs, 12 based on Foata normal form. 28/278 useless extension candidates. Maximal degree in co-relation 1253. Up to 87 conditions per place. [2023-01-28 07:04:07,921 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-01-28 07:04:07,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 773 flow [2023-01-28 07:04:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 07:04:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 07:04:07,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2023-01-28 07:04:07,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508735868448099 [2023-01-28 07:04:07,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2023-01-28 07:04:07,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2023-01-28 07:04:07,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:07,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2023-01-28 07:04:07,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,925 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 429 flow. Second operand 7 states and 536 transitions. [2023-01-28 07:04:07,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 773 flow [2023-01-28 07:04:07,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 67 transitions, 698 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 07:04:07,929 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-01-28 07:04:07,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-01-28 07:04:07,929 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 26 predicate places. [2023-01-28 07:04:07,929 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-01-28 07:04:07,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:07,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:04:07,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:04:07,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:04:07,932 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:04:07,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 07:04:07,932 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:07,934 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:04:07,934 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:04:07,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:04:07 BasicIcfg [2023-01-28 07:04:07,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:04:07,937 INFO L158 Benchmark]: Toolchain (without parser) took 4689.29ms. Allocated memory is still 578.8MB. Free memory was 529.0MB in the beginning and 235.3MB in the end (delta: 293.7MB). Peak memory consumption was 293.0MB. Max. memory is 16.0GB. [2023-01-28 07:04:07,937 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 375.4MB. Free memory is still 324.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:04:07,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.45ms. Allocated memory is still 578.8MB. Free memory was 528.7MB in the beginning and 508.7MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 07:04:07,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.99ms. Allocated memory is still 578.8MB. Free memory was 508.7MB in the beginning and 506.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:07,938 INFO L158 Benchmark]: Boogie Preprocessor took 17.07ms. Allocated memory is still 578.8MB. Free memory was 506.6MB in the beginning and 505.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:07,938 INFO L158 Benchmark]: RCFGBuilder took 399.30ms. Allocated memory is still 578.8MB. Free memory was 505.2MB in the beginning and 491.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 07:04:07,938 INFO L158 Benchmark]: TraceAbstraction took 3872.36ms. Allocated memory is still 578.8MB. Free memory was 490.9MB in the beginning and 235.3MB in the end (delta: 255.6MB). Peak memory consumption was 255.3MB. Max. memory is 16.0GB. [2023-01-28 07:04:07,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 375.4MB. Free memory is still 324.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 361.45ms. Allocated memory is still 578.8MB. Free memory was 528.7MB in the beginning and 508.7MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.99ms. Allocated memory is still 578.8MB. Free memory was 508.7MB in the beginning and 506.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.07ms. Allocated memory is still 578.8MB. Free memory was 506.6MB in the beginning and 505.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 399.30ms. Allocated memory is still 578.8MB. Free memory was 505.2MB in the beginning and 491.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3872.36ms. Allocated memory is still 578.8MB. Free memory was 490.9MB in the beginning and 235.3MB in the end (delta: 255.6MB). Peak memory consumption was 255.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1164, independent: 1087, independent conditional: 0, independent unconditional: 1087, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 570, independent: 548, independent conditional: 0, independent unconditional: 548, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1164, independent: 539, independent conditional: 0, independent unconditional: 539, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 570, unknown conditional: 0, unknown unconditional: 570] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 393 IncrementalHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 25 mSDtfsCounter, 393 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=451occurred in iteration=6, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 398 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 07:04:07,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...