/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/safe032_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:04:10,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:04:10,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:04:10,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:04:10,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:04:10,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:04:10,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:04:10,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:04:10,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:04:10,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:04:10,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:04:10,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:04:10,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:04:10,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:04:10,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:04:10,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:04:10,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:04:10,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:04:10,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:04:10,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:04:10,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:04:10,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:04:10,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:04:10,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:04:10,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:04:10,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:04:10,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:04:10,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:04:10,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:04:10,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:04:10,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:04:10,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:04:10,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:04:10,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:04:10,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:04:10,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:04:10,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:04:10,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:04:10,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:04:10,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:04:10,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:04:10,874 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 07:04:10,891 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:04:10,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:04:10,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:04:10,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:04:10,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:04:10,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:04:10,894 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:04:10,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:04:10,894 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:04:10,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:04:10,895 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:04:10,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:10,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:04:10,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:04:10,897 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:04:10,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:04:11,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:04:11,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:04:11,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:04:11,103 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:04:11,114 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:04:11,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-01-28 07:04:12,072 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:04:12,262 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:04:12,262 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.i [2023-01-28 07:04:12,271 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29bc082f/b9660b8091a3447680b8b69fd27e13e7/FLAG7b2e525cc [2023-01-28 07:04:12,282 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29bc082f/b9660b8091a3447680b8b69fd27e13e7 [2023-01-28 07:04:12,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:04:12,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:04:12,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:12,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:04:12,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:04:12,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448c6ac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12, skipping insertion in model container [2023-01-28 07:04:12,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:04:12,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:04:12,460 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/safe032_tso.i[945,958] [2023-01-28 07:04:12,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:12,580 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:04:12,593 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/safe032_tso.i[945,958] [2023-01-28 07:04:12,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:04:12,656 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:12,656 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 07:04:12,661 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:04:12,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12 WrapperNode [2023-01-28 07:04:12,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:04:12,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:12,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:04:12,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:04:12,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,706 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-28 07:04:12,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:04:12,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:04:12,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:04:12,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:04:12,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:04:12,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:04:12,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:04:12,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:04:12,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (1/1) ... [2023-01-28 07:04:12,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:04:12,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:04:12,765 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 07:04:12,779 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 07:04:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:04:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 07:04:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:04:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:04:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:04:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-28 07:04:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-28 07:04:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-28 07:04:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-28 07:04:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-28 07:04:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-28 07:04:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:04:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 07:04:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:04:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:04:12,792 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 07:04:12,874 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:04:12,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:04:13,031 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:04:13,036 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:04:13,036 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 07:04:13,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:13 BoogieIcfgContainer [2023-01-28 07:04:13,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:04:13,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:04:13,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:04:13,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:04:13,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:04:12" (1/3) ... [2023-01-28 07:04:13,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef8388b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:13, skipping insertion in model container [2023-01-28 07:04:13,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:04:12" (2/3) ... [2023-01-28 07:04:13,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef8388b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:04:13, skipping insertion in model container [2023-01-28 07:04:13,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:04:13" (3/3) ... [2023-01-28 07:04:13,050 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_tso.i [2023-01-28 07:04:13,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:04:13,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 07:04:13,063 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:04:13,137 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 07:04:13,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:04:13,218 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-28 07:04:13,218 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:13,222 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 46 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 07:04:13,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-28 07:04:13,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:13,228 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:04:13,235 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:13,237 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:13,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-28 07:04:13,251 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-28 07:04:13,251 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:13,252 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 37 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 07:04:13,252 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-28 07:04:14,713 INFO L134 LiptonReduction]: Checked pairs total: 2014 [2023-01-28 07:04:14,714 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-01-28 07:04:14,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:04:14,727 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;@25f160a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:04:14,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:04:14,731 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-01-28 07:04:14,732 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:04:14,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:14,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:14,732 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 07:04:14,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1436459342, now seen corresponding path program 1 times [2023-01-28 07:04:14,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:14,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458508507] [2023-01-28 07:04:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:15,171 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 07:04:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458508507] [2023-01-28 07:04:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458508507] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:15,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:04:15,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878912240] [2023-01-28 07:04:15,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:15,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:15,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:15,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 141 [2023-01-28 07:04:15,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 07:04:15,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:15,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 141 [2023-01-28 07:04:15,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:15,309 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2023-01-28 07:04:15,310 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 07:04:15,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 351 events. 202/351 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1469 event pairs, 52 based on Foata normal form. 6/356 useless extension candidates. Maximal degree in co-relation 700. Up to 296 conditions per place. [2023-01-28 07:04:15,313 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 22 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-01-28 07:04:15,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 119 flow [2023-01-28 07:04:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:15,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2023-01-28 07:04:15,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910165484633569 [2023-01-28 07:04:15,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 250 transitions. [2023-01-28 07:04:15,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 250 transitions. [2023-01-28 07:04:15,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:15,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 250 transitions. [2023-01-28 07:04:15,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 07:04:15,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 07:04:15,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 07:04:15,341 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 250 transitions. [2023-01-28 07:04:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 119 flow [2023-01-28 07:04:15,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:15,344 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-01-28 07:04:15,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, 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=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-01-28 07:04:15,350 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-01-28 07:04:15,350 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-01-28 07:04:15,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 07:04:15,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:15,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:15,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:04:15,351 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 07:04:15,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1580567079, now seen corresponding path program 1 times [2023-01-28 07:04:15,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:15,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656134042] [2023-01-28 07:04:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:15,556 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 07:04:15,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:15,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656134042] [2023-01-28 07:04:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656134042] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:15,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:15,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:15,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393225739] [2023-01-28 07:04:15,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:15,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:15,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 07:04:15,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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 07:04:15,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:15,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 07:04:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:15,712 INFO L130 PetriNetUnfolder]: 486/777 cut-off events. [2023-01-28 07:04:15,713 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2023-01-28 07:04:15,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 777 events. 486/777 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3086 event pairs, 63 based on Foata normal form. 55/832 useless extension candidates. Maximal degree in co-relation 1796. Up to 544 conditions per place. [2023-01-28 07:04:15,717 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-01-28 07:04:15,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 40 transitions, 196 flow [2023-01-28 07:04:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:15,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-01-28 07:04:15,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443262411347518 [2023-01-28 07:04:15,720 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-01-28 07:04:15,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-01-28 07:04:15,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:15,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-01-28 07:04:15,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 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 07:04:15,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:15,722 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:15,722 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 307 transitions. [2023-01-28 07:04:15,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 40 transitions, 196 flow [2023-01-28 07:04:15,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:15,724 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 142 flow [2023-01-28 07:04:15,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-28 07:04:15,724 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 07:04:15,725 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 142 flow [2023-01-28 07:04:15,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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 07:04:15,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:15,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:15,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 07:04:15,725 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 07:04:15,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:15,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1702059071, now seen corresponding path program 1 times [2023-01-28 07:04:15,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:15,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901170393] [2023-01-28 07:04:15,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:15,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:15,865 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 07:04:15,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:15,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901170393] [2023-01-28 07:04:15,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901170393] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:15,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:15,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:15,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145603166] [2023-01-28 07:04:15,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:15,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:15,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:15,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:15,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:15,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 07:04:15,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 07:04:15,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:15,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 07:04:15,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:15,933 INFO L130 PetriNetUnfolder]: 426/683 cut-off events. [2023-01-28 07:04:15,933 INFO L131 PetriNetUnfolder]: For 507/507 co-relation queries the response was YES. [2023-01-28 07:04:15,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2127 conditions, 683 events. 426/683 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2629 event pairs, 114 based on Foata normal form. 11/694 useless extension candidates. Maximal degree in co-relation 2112. Up to 298 conditions per place. [2023-01-28 07:04:15,936 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 37 selfloop transitions, 9 changer transitions 4/50 dead transitions. [2023-01-28 07:04:15,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 338 flow [2023-01-28 07:04:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2023-01-28 07:04:15,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407801418439716 [2023-01-28 07:04:15,937 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 305 transitions. [2023-01-28 07:04:15,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 305 transitions. [2023-01-28 07:04:15,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:15,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 305 transitions. [2023-01-28 07:04:15,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 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 07:04:15,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:15,939 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:15,940 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 142 flow. Second operand 4 states and 305 transitions. [2023-01-28 07:04:15,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 338 flow [2023-01-28 07:04:15,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:04:15,942 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 216 flow [2023-01-28 07:04:15,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-01-28 07:04:15,942 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-28 07:04:15,943 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 216 flow [2023-01-28 07:04:15,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 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 07:04:15,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:15,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:15,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:04:15,943 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 07:04:15,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2019576857, now seen corresponding path program 1 times [2023-01-28 07:04:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:15,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142631573] [2023-01-28 07:04:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:16,053 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 07:04:16,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142631573] [2023-01-28 07:04:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142631573] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:16,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:16,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573328121] [2023-01-28 07:04:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:16,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:16,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:16,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:16,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-01-28 07:04:16,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:16,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:16,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-01-28 07:04:16,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:16,160 INFO L130 PetriNetUnfolder]: 488/805 cut-off events. [2023-01-28 07:04:16,160 INFO L131 PetriNetUnfolder]: For 1124/1124 co-relation queries the response was YES. [2023-01-28 07:04:16,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 805 events. 488/805 cut-off events. For 1124/1124 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3425 event pairs, 120 based on Foata normal form. 8/813 useless extension candidates. Maximal degree in co-relation 2786. Up to 392 conditions per place. [2023-01-28 07:04:16,164 INFO L137 encePairwiseOnDemand]: 133/141 looper letters, 35 selfloop transitions, 15 changer transitions 10/60 dead transitions. [2023-01-28 07:04:16,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 480 flow [2023-01-28 07:04:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:16,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-01-28 07:04:16,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5514184397163121 [2023-01-28 07:04:16,165 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-01-28 07:04:16,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-01-28 07:04:16,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:16,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-01-28 07:04:16,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 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 07:04:16,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:16,174 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:16,174 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 216 flow. Second operand 4 states and 311 transitions. [2023-01-28 07:04:16,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 480 flow [2023-01-28 07:04:16,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 468 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:16,182 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 313 flow [2023-01-28 07:04:16,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-01-28 07:04:16,183 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-01-28 07:04:16,183 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 313 flow [2023-01-28 07:04:16,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:04:16,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:16,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:16,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 07:04:16,184 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 07:04:16,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash -947888225, now seen corresponding path program 1 times [2023-01-28 07:04:16,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:16,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054398670] [2023-01-28 07:04:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:16,379 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 07:04:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:16,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054398670] [2023-01-28 07:04:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054398670] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:16,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:16,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 07:04:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715786475] [2023-01-28 07:04:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:04:16,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:04:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:04:16,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-01-28 07:04:16,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 07:04:16,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:16,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-01-28 07:04:16,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:16,424 INFO L130 PetriNetUnfolder]: 135/278 cut-off events. [2023-01-28 07:04:16,424 INFO L131 PetriNetUnfolder]: For 1295/1310 co-relation queries the response was YES. [2023-01-28 07:04:16,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 278 events. 135/278 cut-off events. For 1295/1310 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1133 event pairs, 28 based on Foata normal form. 16/288 useless extension candidates. Maximal degree in co-relation 1097. Up to 180 conditions per place. [2023-01-28 07:04:16,426 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 33 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-01-28 07:04:16,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 50 transitions, 502 flow [2023-01-28 07:04:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:04:16,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:04:16,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-01-28 07:04:16,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2023-01-28 07:04:16,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-01-28 07:04:16,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-01-28 07:04:16,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:16,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-01-28 07:04:16,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 07:04:16,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 07:04:16,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 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 07:04:16,429 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 313 flow. Second operand 3 states and 244 transitions. [2023-01-28 07:04:16,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 50 transitions, 502 flow [2023-01-28 07:04:16,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 07:04:16,432 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 336 flow [2023-01-28 07:04:16,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-01-28 07:04:16,434 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-01-28 07:04:16,434 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 336 flow [2023-01-28 07:04:16,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 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 07:04:16,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:16,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:16,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 07:04:16,435 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 07:04:16,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:16,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1931314573, now seen corresponding path program 1 times [2023-01-28 07:04:16,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:16,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781083953] [2023-01-28 07:04:16,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:16,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:16,556 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 07:04:16,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:16,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781083953] [2023-01-28 07:04:16,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781083953] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:16,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:16,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 07:04:16,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885401960] [2023-01-28 07:04:16,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:16,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 07:04:16,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:16,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 07:04:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 07:04:16,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-01-28 07:04:16,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 07:04:16,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:16,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-01-28 07:04:16,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:16,599 INFO L130 PetriNetUnfolder]: 95/204 cut-off events. [2023-01-28 07:04:16,600 INFO L131 PetriNetUnfolder]: For 866/889 co-relation queries the response was YES. [2023-01-28 07:04:16,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 204 events. 95/204 cut-off events. For 866/889 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 766 event pairs, 15 based on Foata normal form. 32/230 useless extension candidates. Maximal degree in co-relation 933. Up to 75 conditions per place. [2023-01-28 07:04:16,601 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 36 selfloop transitions, 7 changer transitions 1/57 dead transitions. [2023-01-28 07:04:16,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 580 flow [2023-01-28 07:04:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:04:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:04:16,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 324 transitions. [2023-01-28 07:04:16,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2023-01-28 07:04:16,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 324 transitions. [2023-01-28 07:04:16,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 324 transitions. [2023-01-28 07:04:16,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:16,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 324 transitions. [2023-01-28 07:04:16,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 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 07:04:16,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:16,604 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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 07:04:16,604 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 336 flow. Second operand 4 states and 324 transitions. [2023-01-28 07:04:16,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 580 flow [2023-01-28 07:04:16,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 570 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 07:04:16,607 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 360 flow [2023-01-28 07:04:16,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=360, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-01-28 07:04:16,608 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 07:04:16,608 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 360 flow [2023-01-28 07:04:16,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 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 07:04:16,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:04:16,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:16,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 07:04:16,608 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 07:04:16,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:04:16,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1798537270, now seen corresponding path program 1 times [2023-01-28 07:04:16,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:04:16,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366180274] [2023-01-28 07:04:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:04:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:04:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:04:16,753 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 07:04:16,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:04:16,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366180274] [2023-01-28 07:04:16,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366180274] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:04:16,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:04:16,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 07:04:16,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637373383] [2023-01-28 07:04:16,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:04:16,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 07:04:16,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:04:16,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 07:04:16,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-01-28 07:04:16,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-01-28 07:04:16,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 07:04:16,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:04:16,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-01-28 07:04:16,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:04:16,801 INFO L130 PetriNetUnfolder]: 88/184 cut-off events. [2023-01-28 07:04:16,801 INFO L131 PetriNetUnfolder]: For 966/996 co-relation queries the response was YES. [2023-01-28 07:04:16,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 184 events. 88/184 cut-off events. For 966/996 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 688 event pairs, 14 based on Foata normal form. 23/201 useless extension candidates. Maximal degree in co-relation 879. Up to 67 conditions per place. [2023-01-28 07:04:16,802 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-01-28 07:04:16,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 580 flow [2023-01-28 07:04:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 07:04:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 07:04:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-01-28 07:04:16,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-01-28 07:04:16,803 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-01-28 07:04:16,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-01-28 07:04:16,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:04:16,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-01-28 07:04:16,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 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 07:04:16,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:04:16,805 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 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 07:04:16,806 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 360 flow. Second operand 5 states and 395 transitions. [2023-01-28 07:04:16,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 580 flow [2023-01-28 07:04:16,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 556 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 07:04:16,808 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-01-28 07:04:16,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-01-28 07:04:16,809 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 07:04:16,809 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-01-28 07:04:16,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 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 07:04:16,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:04:16,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 07:04:16,811 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 07:04:16,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 07:04:16,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 07:04:16,812 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:04:16,814 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 07:04:16,814 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 07:04:16,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 07:04:16 BasicIcfg [2023-01-28 07:04:16,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 07:04:16,818 INFO L158 Benchmark]: Toolchain (without parser) took 4533.23ms. Allocated memory was 392.2MB in the beginning and 557.8MB in the end (delta: 165.7MB). Free memory was 331.0MB in the beginning and 253.3MB in the end (delta: 77.7MB). Peak memory consumption was 245.4MB. Max. memory is 16.0GB. [2023-01-28 07:04:16,818 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 392.2MB. Free memory is still 339.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 07:04:16,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.28ms. Allocated memory is still 392.2MB. Free memory was 330.6MB in the beginning and 310.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 07:04:16,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.44ms. Allocated memory is still 392.2MB. Free memory was 310.7MB in the beginning and 308.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:16,819 INFO L158 Benchmark]: Boogie Preprocessor took 26.31ms. Allocated memory is still 392.2MB. Free memory was 308.6MB in the beginning and 307.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 07:04:16,819 INFO L158 Benchmark]: RCFGBuilder took 303.83ms. Allocated memory was 392.2MB in the beginning and 557.8MB in the end (delta: 165.7MB). Free memory was 307.2MB in the beginning and 523.3MB in the end (delta: -216.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.0GB. [2023-01-28 07:04:16,819 INFO L158 Benchmark]: TraceAbstraction took 3774.61ms. Allocated memory is still 557.8MB. Free memory was 522.3MB in the beginning and 253.3MB in the end (delta: 268.9MB). Peak memory consumption was 268.9MB. Max. memory is 16.0GB. [2023-01-28 07:04:16,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 392.2MB. Free memory is still 339.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 374.28ms. Allocated memory is still 392.2MB. Free memory was 330.6MB in the beginning and 310.7MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.44ms. Allocated memory is still 392.2MB. Free memory was 310.7MB in the beginning and 308.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.31ms. Allocated memory is still 392.2MB. Free memory was 308.6MB in the beginning and 307.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 303.83ms. Allocated memory was 392.2MB in the beginning and 557.8MB in the end (delta: 165.7MB). Free memory was 307.2MB in the beginning and 523.3MB in the end (delta: -216.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.0GB. * TraceAbstraction took 3774.61ms. Allocated memory is still 557.8MB. Free memory was 522.3MB in the beginning and 253.3MB in the end (delta: 268.9MB). Peak memory consumption was 268.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 18 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 57 TotalNumberOfCompositions, 2014 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1147, independent: 1065, independent conditional: 0, independent unconditional: 1065, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 587, independent conditional: 0, independent unconditional: 587, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1147, independent: 478, independent conditional: 0, independent unconditional: 478, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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: 3.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 241 IncrementalHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 9 mSDtfsCounter, 241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=360occurred in iteration=6, InterpolantAutomatonStates: 27, 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, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 07:04:16,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...