./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:58:19,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:58:19,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:58:19,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:58:19,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:58:19,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:58:19,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:58:19,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:58:19,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:58:19,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:58:19,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:58:19,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:58:19,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:58:19,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:58:19,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:58:19,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:58:19,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:58:19,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:58:19,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:58:19,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:58:19,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:58:19,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:58:19,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:58:19,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:58:19,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:58:19,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:58:19,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:58:19,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:58:19,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:58:19,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:58:19,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:58:19,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:58:19,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:58:19,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:58:19,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:58:19,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:58:19,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:58:19,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:58:19,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:58:19,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:58:19,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:58:19,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:58:19,799 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:58:19,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:58:19,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:58:19,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:58:19,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:58:19,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:58:19,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:58:19,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:58:19,802 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:58:19,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:58:19,803 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:58:19,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:58:19,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:58:19,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:58:19,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:58:19,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:58:19,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:58:19,805 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:58:19,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:58:19,805 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:58:19,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:58:19,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:58:19,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:58:19,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:58:19,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:58:19,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:58:19,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:58:19,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:58:19,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:58:19,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:58:19,807 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:58:19,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:58:19,808 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:58:19,808 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:58:19,808 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:58:19,808 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80799f6c8fd7356eb24d2cdce2b9813d505d1c320a66d664e71d3261c3c21a3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:58:20,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:58:20,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:58:20,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:58:20,157 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:58:20,158 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:58:20,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-08-30 16:58:21,291 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:58:21,513 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:58:21,514 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-08-30 16:58:21,527 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69dba9cf/2fa0f871c1a349d9a1f0cf298ebde129/FLAG948cc9aed [2023-08-30 16:58:21,542 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d69dba9cf/2fa0f871c1a349d9a1f0cf298ebde129 [2023-08-30 16:58:21,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:58:21,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:58:21,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:58:21,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:58:21,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:58:21,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:58:21" (1/1) ... [2023-08-30 16:58:21,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3244ba81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:21, skipping insertion in model container [2023-08-30 16:58:21,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:58:21" (1/1) ... [2023-08-30 16:58:21,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:58:21,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:58:21,771 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/safe026_tso.i[945,958] [2023-08-30 16:58:21,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:58:21,935 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:58:21,949 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/safe026_tso.i[945,958] [2023-08-30 16:58:21,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:58:21,998 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:58:21,998 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:58:22,004 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:58:22,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22 WrapperNode [2023-08-30 16:58:22,005 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:58:22,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:58:22,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:58:22,006 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:58:22,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,062 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-30 16:58:22,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:58:22,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:58:22,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:58:22,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:58:22,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:58:22,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:58:22,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:58:22,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:58:22,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (1/1) ... [2023-08-30 16:58:22,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:58:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:58:22,147 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) [2023-08-30 16:58:22,149 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 [2023-08-30 16:58:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:58:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:58:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:58:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:58:22,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:58:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:58:22,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:58:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:58:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:58:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:58:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:58:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:58:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:58:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:58:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:58:22,184 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:58:22,321 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:58:22,323 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:58:22,510 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:58:22,516 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:58:22,516 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:58:22,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:58:22 BoogieIcfgContainer [2023-08-30 16:58:22,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:58:22,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:58:22,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:58:22,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:58:22,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:58:21" (1/3) ... [2023-08-30 16:58:22,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5110118b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:58:22, skipping insertion in model container [2023-08-30 16:58:22,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:58:22" (2/3) ... [2023-08-30 16:58:22,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5110118b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:58:22, skipping insertion in model container [2023-08-30 16:58:22,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:58:22" (3/3) ... [2023-08-30 16:58:22,530 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2023-08-30 16:58:22,538 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:58:22,546 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:58:22,546 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:58:22,546 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:58:22,594 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:58:22,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2023-08-30 16:58:22,663 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2023-08-30 16:58:22,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:58:22,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-08-30 16:58:22,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2023-08-30 16:58:22,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-08-30 16:58:22,674 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:58:22,688 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-30 16:58:22,691 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-30 16:58:22,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-08-30 16:58:22,710 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2023-08-30 16:58:22,710 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:58:22,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 35 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 16:58:22,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-08-30 16:58:24,555 INFO L134 LiptonReduction]: Checked pairs total: 1736 [2023-08-30 16:58:24,556 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-08-30 16:58:24,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:58:24,573 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=true, 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;@6852fab9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:58:24,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 16:58:24,578 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-30 16:58:24,578 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:58:24,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:24,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:24,579 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)] === [2023-08-30 16:58:24,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash 773119812, now seen corresponding path program 1 times [2023-08-30 16:58:24,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271070954] [2023-08-30 16:58:24,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:24,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:25,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271070954] [2023-08-30 16:58:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271070954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:25,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:58:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570698047] [2023-08-30 16:58:25,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:58:25,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:25,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:58:25,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:58:25,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:58:25,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-30 16:58:25,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:25,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:58:25,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:25,429 INFO L130 PetriNetUnfolder]: 381/628 cut-off events. [2023-08-30 16:58:25,429 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 16:58:25,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1303 conditions, 628 events. 381/628 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2533 event pairs, 117 based on Foata normal form. 26/654 useless extension candidates. Maximal degree in co-relation 1292. Up to 439 conditions per place. [2023-08-30 16:58:25,435 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 22 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2023-08-30 16:58:25,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 120 flow [2023-08-30 16:58:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:58:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:58:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-30 16:58:25,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2023-08-30 16:58:25,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-30 16:58:25,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-30 16:58:25,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:25,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-30 16:58:25,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2023-08-30 16:58:25,471 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) [2023-08-30 16:58:25,471 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) [2023-08-30 16:58:25,473 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 240 transitions. [2023-08-30 16:58:25,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 120 flow [2023-08-30 16:58:25,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:58:25,478 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 76 flow [2023-08-30 16:58:25,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-30 16:58:25,483 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2023-08-30 16:58:25,483 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 76 flow [2023-08-30 16:58:25,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-30 16:58:25,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:25,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:58:25,489 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)] === [2023-08-30 16:58:25,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1803090255, now seen corresponding path program 1 times [2023-08-30 16:58:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272459481] [2023-08-30 16:58:25,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:25,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:25,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272459481] [2023-08-30 16:58:25,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272459481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:25,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:25,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:58:25,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811592565] [2023-08-30 16:58:25,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:25,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:58:25,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:25,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:58:25,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:58:25,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:58:25,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:58:25,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:25,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:58:25,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:25,880 INFO L130 PetriNetUnfolder]: 359/594 cut-off events. [2023-08-30 16:58:25,881 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2023-08-30 16:58:25,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 594 events. 359/594 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2286 event pairs, 99 based on Foata normal form. 8/602 useless extension candidates. Maximal degree in co-relation 1560. Up to 339 conditions per place. [2023-08-30 16:58:25,886 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 24 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-30 16:58:25,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 164 flow [2023-08-30 16:58:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:58:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:58:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-30 16:58:25,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2023-08-30 16:58:25,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-30 16:58:25,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-30 16:58:25,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:25,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-30 16:58:25,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-08-30 16:58:25,897 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) [2023-08-30 16:58:25,897 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) [2023-08-30 16:58:25,898 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 76 flow. Second operand 4 states and 309 transitions. [2023-08-30 16:58:25,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 164 flow [2023-08-30 16:58:25,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:58:25,902 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 104 flow [2023-08-30 16:58:25,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-30 16:58:25,903 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2023-08-30 16:58:25,903 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 104 flow [2023-08-30 16:58:25,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:58:25,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:25,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:25,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:58:25,904 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)] === [2023-08-30 16:58:25,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:25,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1803090937, now seen corresponding path program 1 times [2023-08-30 16:58:25,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:25,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023924771] [2023-08-30 16:58:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:25,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:26,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023924771] [2023-08-30 16:58:26,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023924771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:26,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:26,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:58:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971792444] [2023-08-30 16:58:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:58:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:26,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:58:26,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:58:26,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:58:26,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:58:26,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:26,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:58:26,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:26,202 INFO L130 PetriNetUnfolder]: 336/559 cut-off events. [2023-08-30 16:58:26,202 INFO L131 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2023-08-30 16:58:26,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 559 events. 336/559 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2191 event pairs, 73 based on Foata normal form. 6/565 useless extension candidates. Maximal degree in co-relation 1584. Up to 360 conditions per place. [2023-08-30 16:58:26,207 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 29 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2023-08-30 16:58:26,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 40 transitions, 246 flow [2023-08-30 16:58:26,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:58:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:58:26,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 317 transitions. [2023-08-30 16:58:26,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620567375886525 [2023-08-30 16:58:26,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 317 transitions. [2023-08-30 16:58:26,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 317 transitions. [2023-08-30 16:58:26,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:26,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 317 transitions. [2023-08-30 16:58:26,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 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) [2023-08-30 16:58:26,211 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) [2023-08-30 16:58:26,212 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) [2023-08-30 16:58:26,212 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 104 flow. Second operand 4 states and 317 transitions. [2023-08-30 16:58:26,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 40 transitions, 246 flow [2023-08-30 16:58:26,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 40 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:58:26,218 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 167 flow [2023-08-30 16:58:26,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-30 16:58:26,219 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-08-30 16:58:26,221 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 167 flow [2023-08-30 16:58:26,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:58:26,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:26,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:26,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:58:26,222 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)] === [2023-08-30 16:58:26,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:26,222 INFO L85 PathProgramCache]: Analyzing trace with hash -61224390, now seen corresponding path program 1 times [2023-08-30 16:58:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:26,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32148528] [2023-08-30 16:58:26,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:26,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:26,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32148528] [2023-08-30 16:58:26,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32148528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:26,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:26,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:58:26,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978325977] [2023-08-30 16:58:26,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:26,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:58:26,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:26,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:58:26,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:58:26,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-08-30 16:58:26,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-30 16:58:26,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:26,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-08-30 16:58:26,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:26,402 INFO L130 PetriNetUnfolder]: 185/345 cut-off events. [2023-08-30 16:58:26,403 INFO L131 PetriNetUnfolder]: For 491/516 co-relation queries the response was YES. [2023-08-30 16:58:26,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 345 events. 185/345 cut-off events. For 491/516 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1454 event pairs, 50 based on Foata normal form. 21/354 useless extension candidates. Maximal degree in co-relation 1082. Up to 271 conditions per place. [2023-08-30 16:58:26,406 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 30 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-30 16:58:26,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 40 transitions, 305 flow [2023-08-30 16:58:26,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:58:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:58:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 16:58:26,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2023-08-30 16:58:26,407 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 16:58:26,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 16:58:26,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:26,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 16:58:26,409 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) [2023-08-30 16:58:26,410 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) [2023-08-30 16:58:26,410 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) [2023-08-30 16:58:26,410 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 167 flow. Second operand 3 states and 244 transitions. [2023-08-30 16:58:26,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 40 transitions, 305 flow [2023-08-30 16:58:26,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 303 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 16:58:26,413 INFO L231 Difference]: Finished difference. Result has 38 places, 29 transitions, 191 flow [2023-08-30 16:58:26,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=38, PETRI_TRANSITIONS=29} [2023-08-30 16:58:26,414 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-30 16:58:26,414 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 29 transitions, 191 flow [2023-08-30 16:58:26,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-30 16:58:26,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:26,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:26,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:58:26,415 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)] === [2023-08-30 16:58:26,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:26,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1120047546, now seen corresponding path program 1 times [2023-08-30 16:58:26,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:26,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087614157] [2023-08-30 16:58:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:26,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:26,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:26,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087614157] [2023-08-30 16:58:26,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087614157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:26,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:26,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:58:26,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824610203] [2023-08-30 16:58:26,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:26,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:58:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:58:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:58:26,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-08-30 16:58:26,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2023-08-30 16:58:26,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:26,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-08-30 16:58:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:26,637 INFO L130 PetriNetUnfolder]: 113/232 cut-off events. [2023-08-30 16:58:26,637 INFO L131 PetriNetUnfolder]: For 339/381 co-relation queries the response was YES. [2023-08-30 16:58:26,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 889 conditions, 232 events. 113/232 cut-off events. For 339/381 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 892 event pairs, 19 based on Foata normal form. 43/270 useless extension candidates. Maximal degree in co-relation 868. Up to 103 conditions per place. [2023-08-30 16:58:26,639 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 37 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2023-08-30 16:58:26,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 397 flow [2023-08-30 16:58:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:58:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:58:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 325 transitions. [2023-08-30 16:58:26,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5762411347517731 [2023-08-30 16:58:26,641 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 325 transitions. [2023-08-30 16:58:26,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 325 transitions. [2023-08-30 16:58:26,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:26,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 325 transitions. [2023-08-30 16:58:26,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2023-08-30 16:58:26,644 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) [2023-08-30 16:58:26,644 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) [2023-08-30 16:58:26,644 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 191 flow. Second operand 4 states and 325 transitions. [2023-08-30 16:58:26,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 397 flow [2023-08-30 16:58:26,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 393 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:58:26,649 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 227 flow [2023-08-30 16:58:26,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-30 16:58:26,651 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-30 16:58:26,651 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 227 flow [2023-08-30 16:58:26,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 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) [2023-08-30 16:58:26,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:26,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:26,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:58:26,652 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)] === [2023-08-30 16:58:26,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1625474379, now seen corresponding path program 1 times [2023-08-30 16:58:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:26,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723704502] [2023-08-30 16:58:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:26,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:26,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723704502] [2023-08-30 16:58:26,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723704502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:26,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:26,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:58:26,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071938964] [2023-08-30 16:58:26,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:26,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:58:26,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:58:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:58:26,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 141 [2023-08-30 16:58:26,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-30 16:58:26,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:26,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 141 [2023-08-30 16:58:26,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:26,907 INFO L130 PetriNetUnfolder]: 94/191 cut-off events. [2023-08-30 16:58:26,907 INFO L131 PetriNetUnfolder]: For 471/538 co-relation queries the response was YES. [2023-08-30 16:58:26,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 191 events. 94/191 cut-off events. For 471/538 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 706 event pairs, 15 based on Foata normal form. 50/237 useless extension candidates. Maximal degree in co-relation 795. Up to 79 conditions per place. [2023-08-30 16:58:26,909 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 32 selfloop transitions, 10 changer transitions 2/50 dead transitions. [2023-08-30 16:58:26,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 421 flow [2023-08-30 16:58:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:58:26,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:58:26,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 398 transitions. [2023-08-30 16:58:26,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645390070921986 [2023-08-30 16:58:26,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 398 transitions. [2023-08-30 16:58:26,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 398 transitions. [2023-08-30 16:58:26,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:26,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 398 transitions. [2023-08-30 16:58:26,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 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) [2023-08-30 16:58:26,914 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) [2023-08-30 16:58:26,914 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) [2023-08-30 16:58:26,915 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 227 flow. Second operand 5 states and 398 transitions. [2023-08-30 16:58:26,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 421 flow [2023-08-30 16:58:26,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 395 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 16:58:26,918 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 233 flow [2023-08-30 16:58:26,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-30 16:58:26,919 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2023-08-30 16:58:26,919 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 233 flow [2023-08-30 16:58:26,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.4) internal successors, (377), 5 states have internal predecessors, (377), 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) [2023-08-30 16:58:26,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:26,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:58:26,920 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)] === [2023-08-30 16:58:26,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash -37915969, now seen corresponding path program 1 times [2023-08-30 16:58:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776808203] [2023-08-30 16:58:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:27,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:27,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776808203] [2023-08-30 16:58:27,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776808203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:27,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:27,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:58:27,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674101623] [2023-08-30 16:58:27,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:27,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:58:27,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:27,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:58:27,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:58:27,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 141 [2023-08-30 16:58:27,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-08-30 16:58:27,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:27,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 141 [2023-08-30 16:58:27,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:27,130 INFO L130 PetriNetUnfolder]: 135/264 cut-off events. [2023-08-30 16:58:27,131 INFO L131 PetriNetUnfolder]: For 737/737 co-relation queries the response was YES. [2023-08-30 16:58:27,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174 conditions, 264 events. 135/264 cut-off events. For 737/737 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 964 event pairs, 10 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 1151. Up to 127 conditions per place. [2023-08-30 16:58:27,133 INFO L137 encePairwiseOnDemand]: 134/141 looper letters, 29 selfloop transitions, 10 changer transitions 25/64 dead transitions. [2023-08-30 16:58:27,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 565 flow [2023-08-30 16:58:27,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:58:27,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:58:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-08-30 16:58:27,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2023-08-30 16:58:27,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-08-30 16:58:27,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-08-30 16:58:27,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:27,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-08-30 16:58:27,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 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) [2023-08-30 16:58:27,137 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) [2023-08-30 16:58:27,138 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) [2023-08-30 16:58:27,138 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 233 flow. Second operand 5 states and 381 transitions. [2023-08-30 16:58:27,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 565 flow [2023-08-30 16:58:27,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 64 transitions, 509 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 16:58:27,143 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 224 flow [2023-08-30 16:58:27,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-08-30 16:58:27,144 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-08-30 16:58:27,144 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 224 flow [2023-08-30 16:58:27,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 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) [2023-08-30 16:58:27,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:27,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:27,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:58:27,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:58:27,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -539530639, now seen corresponding path program 2 times [2023-08-30 16:58:27,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:27,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670325284] [2023-08-30 16:58:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:27,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:27,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670325284] [2023-08-30 16:58:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670325284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:27,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:27,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:58:27,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746318446] [2023-08-30 16:58:27,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:27,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:58:27,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:58:27,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:58:27,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:58:27,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:58:27,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:27,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:58:27,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:27,341 INFO L130 PetriNetUnfolder]: 53/130 cut-off events. [2023-08-30 16:58:27,342 INFO L131 PetriNetUnfolder]: For 393/393 co-relation queries the response was YES. [2023-08-30 16:58:27,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 130 events. 53/130 cut-off events. For 393/393 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 401 event pairs, 8 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 582. Up to 56 conditions per place. [2023-08-30 16:58:27,343 INFO L137 encePairwiseOnDemand]: 136/141 looper letters, 25 selfloop transitions, 7 changer transitions 22/54 dead transitions. [2023-08-30 16:58:27,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 466 flow [2023-08-30 16:58:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:58:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:58:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2023-08-30 16:58:27,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378250591016549 [2023-08-30 16:58:27,345 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 455 transitions. [2023-08-30 16:58:27,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 455 transitions. [2023-08-30 16:58:27,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:27,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 455 transitions. [2023-08-30 16:58:27,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.83333333333333) internal successors, (455), 6 states have internal predecessors, (455), 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) [2023-08-30 16:58:27,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-08-30 16:58:27,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 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) [2023-08-30 16:58:27,348 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 224 flow. Second operand 6 states and 455 transitions. [2023-08-30 16:58:27,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 466 flow [2023-08-30 16:58:27,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 54 transitions, 434 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 16:58:27,351 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 191 flow [2023-08-30 16:58:27,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-08-30 16:58:27,352 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 21 predicate places. [2023-08-30 16:58:27,352 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 191 flow [2023-08-30 16:58:27,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:58:27,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:58:27,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:27,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:58:27,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:58:27,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:58:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash -724282675, now seen corresponding path program 3 times [2023-08-30 16:58:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:58:27,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528199593] [2023-08-30 16:58:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:58:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:58:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:58:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:58:27,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:58:27,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528199593] [2023-08-30 16:58:27,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528199593] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:58:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:58:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:58:27,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301551398] [2023-08-30 16:58:27,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:58:27,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:58:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:58:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:58:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:58:27,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 141 [2023-08-30 16:58:27,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:58:27,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:58:27,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 141 [2023-08-30 16:58:27,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:58:27,528 INFO L130 PetriNetUnfolder]: 34/85 cut-off events. [2023-08-30 16:58:27,529 INFO L131 PetriNetUnfolder]: For 266/266 co-relation queries the response was YES. [2023-08-30 16:58:27,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 85 events. 34/85 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 211 event pairs, 13 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 384. Up to 60 conditions per place. [2023-08-30 16:58:27,530 INFO L137 encePairwiseOnDemand]: 138/141 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-30 16:58:27,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 257 flow [2023-08-30 16:58:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:58:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:58:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2023-08-30 16:58:27,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2023-08-30 16:58:27,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 298 transitions. [2023-08-30 16:58:27,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 298 transitions. [2023-08-30 16:58:27,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:58:27,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 298 transitions. [2023-08-30 16:58:27,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 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) [2023-08-30 16:58:27,534 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) [2023-08-30 16:58:27,534 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) [2023-08-30 16:58:27,534 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 191 flow. Second operand 4 states and 298 transitions. [2023-08-30 16:58:27,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 257 flow [2023-08-30 16:58:27,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 218 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 16:58:27,536 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-30 16:58:27,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-30 16:58:27,537 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-30 16:58:27,537 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-30 16:58:27,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.2) internal successors, (366), 5 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:58:27,539 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 16:58:27,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 16:58:27,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 16:58:27,540 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 16:58:27,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:58:27,541 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2023-08-30 16:58:27,544 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:58:27,544 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:58:27,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:58:27 BasicIcfg [2023-08-30 16:58:27,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:58:27,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:58:27,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:58:27,548 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:58:27,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:58:22" (3/4) ... [2023-08-30 16:58:27,550 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:58:27,555 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:58:27,556 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:58:27,556 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:58:27,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 16:58:27,559 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:58:27,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:58:27,560 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:58:27,585 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:58:27,586 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:58:27,586 INFO L158 Benchmark]: Toolchain (without parser) took 6040.15ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 41.9MB in the beginning and 84.5MB in the end (delta: -42.6MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2023-08-30 16:58:27,586 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:58:27,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 457.71ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 39.4MB in the end (delta: 2.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-08-30 16:58:27,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.14ms. Allocated memory is still 71.3MB. Free memory was 39.4MB in the beginning and 37.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:58:27,587 INFO L158 Benchmark]: Boogie Preprocessor took 43.71ms. Allocated memory is still 71.3MB. Free memory was 37.4MB in the beginning and 35.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:58:27,587 INFO L158 Benchmark]: RCFGBuilder took 410.43ms. Allocated memory is still 71.3MB. Free memory was 35.9MB in the beginning and 43.6MB in the end (delta: -7.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 16:58:27,588 INFO L158 Benchmark]: TraceAbstraction took 5026.91ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 43.0MB in the beginning and 87.6MB in the end (delta: -44.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-08-30 16:58:27,588 INFO L158 Benchmark]: Witness Printer took 38.46ms. Allocated memory is still 125.8MB. Free memory was 87.6MB in the beginning and 84.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 16:58:27,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 34.7MB in the beginning and 34.6MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 457.71ms. Allocated memory is still 71.3MB. Free memory was 41.7MB in the beginning and 39.4MB in the end (delta: 2.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.14ms. Allocated memory is still 71.3MB. Free memory was 39.4MB in the beginning and 37.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.71ms. Allocated memory is still 71.3MB. Free memory was 37.4MB in the beginning and 35.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 410.43ms. Allocated memory is still 71.3MB. Free memory was 35.9MB in the beginning and 43.6MB in the end (delta: -7.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5026.91ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 43.0MB in the beginning and 87.6MB in the end (delta: -44.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Witness Printer took 38.46ms. Allocated memory is still 125.8MB. Free memory was 87.6MB in the beginning and 84.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 17 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 58 TotalNumberOfCompositions, 1736 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1002, independent: 933, independent conditional: 0, independent unconditional: 933, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 545, independent: 521, independent conditional: 0, independent unconditional: 521, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1002, independent: 412, independent conditional: 0, independent unconditional: 412, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 545, unknown conditional: 0, unknown unconditional: 545] , Statistics on independence cache: Total cache size (in pairs): 33, Positive cache size: 25, Positive conditional cache size: 0, Positive unconditional cache size: 25, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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, 105 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: 4.9s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 416 IncrementalHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 24 mSDtfsCounter, 416 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=6, InterpolantAutomatonStates: 38, 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, 1.5s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 479 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-08-30 16:58:27,606 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE