/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:36:19,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:36:19,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:36:19,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:36:19,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:36:19,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:36:19,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:36:19,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:36:19,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:36:19,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:36:19,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:36:19,088 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:36:19,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:36:19,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:36:19,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:36:19,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:36:19,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:36:19,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:36:19,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:36:19,095 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:36:19,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:36:19,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:36:19,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:36:19,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:36:19,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:36:19,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:36:19,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:36:19,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:36:19,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:36:19,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:36:19,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:36:19,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:36:19,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:36:19,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:36:19,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:36:19,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:36:19,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:36:19,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:36:19,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:36:19,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:36:19,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:36:19,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 20:36:19,145 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:36:19,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:36:19,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:36:19,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:36:19,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:36:19,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:36:19,149 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:36:19,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:36:19,149 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:36:19,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:36:19,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:36:19,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:36:19,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:36:19,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:36:19,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:36:19,151 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:36:19,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:36:19,152 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:36:19,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:36:19,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:36:19,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:36:19,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:36:19,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:36:19,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:36:19,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:36:19,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:36:19,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:36:19,153 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:36:19,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:36:19,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:36:19,154 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:36:19,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-11 20:36:19,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:36:19,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:36:19,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:36:19,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:36:19,503 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:36:19,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-6.i [2022-12-11 20:36:20,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:36:20,831 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:36:20,832 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i [2022-12-11 20:36:20,848 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d11810e/593667d6604f4379817ba9b012aadcf3/FLAG461332bd2 [2022-12-11 20:36:20,859 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d11810e/593667d6604f4379817ba9b012aadcf3 [2022-12-11 20:36:20,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:36:20,862 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:36:20,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:36:20,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:36:20,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:36:20,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da57c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:20, skipping insertion in model container [2022-12-11 20:36:20,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:36:20" (1/1) ... [2022-12-11 20:36:20,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:36:20,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:36:21,182 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2022-12-11 20:36:21,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,196 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:36:21,215 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:36:21,250 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2022-12-11 20:36:21,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,260 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,262 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,263 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,267 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,268 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-11 20:36:21,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-11 20:36:21,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:36:21,310 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:36:21,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21 WrapperNode [2022-12-11 20:36:21,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:36:21,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:36:21,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:36:21,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:36:21,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,371 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-12-11 20:36:21,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:36:21,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:36:21,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:36:21,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:36:21,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:36:21,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:36:21,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:36:21,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:36:21,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (1/1) ... [2022-12-11 20:36:21,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:36:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:21,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 20:36:21,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 20:36:21,488 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-11 20:36:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-11 20:36:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-11 20:36:21,489 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-11 20:36:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:36:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-11 20:36:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:36:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:36:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:36:21,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:36:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-11 20:36:21,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:36:21,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:36:21,491 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:36:21,656 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:36:21,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:36:21,832 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:36:21,838 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:36:21,839 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-11 20:36:21,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:36:21 BoogieIcfgContainer [2022-12-11 20:36:21,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:36:21,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:36:21,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:36:21,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:36:21,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:36:20" (1/3) ... [2022-12-11 20:36:21,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b5e55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:36:21, skipping insertion in model container [2022-12-11 20:36:21,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:36:21" (2/3) ... [2022-12-11 20:36:21,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b5e55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:36:21, skipping insertion in model container [2022-12-11 20:36:21,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:36:21" (3/3) ... [2022-12-11 20:36:21,852 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2022-12-11 20:36:21,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:36:21,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:36:21,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:36:21,928 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-11 20:36:21,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 196 flow [2022-12-11 20:36:22,003 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2022-12-11 20:36:22,004 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 20:36:22,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-11 20:36:22,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 196 flow [2022-12-11 20:36:22,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 188 flow [2022-12-11 20:36:22,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:36:22,032 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a44f463, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:36:22,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 20:36:22,055 INFO L130 PetriNetUnfolder]: 6/81 cut-off events. [2022-12-11 20:36:22,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-11 20:36:22,055 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:22,056 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:22,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash 95801150, now seen corresponding path program 1 times [2022-12-11 20:36:22,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:22,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847389600] [2022-12-11 20:36:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:22,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:22,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847389600] [2022-12-11 20:36:22,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847389600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:36:22,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:36:22,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-11 20:36:22,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345401429] [2022-12-11 20:36:22,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:36:22,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-11 20:36:22,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:22,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-11 20:36:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-11 20:36:22,463 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 93 [2022-12-11 20:36:22,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:22,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:22,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 93 [2022-12-11 20:36:22,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:22,542 INFO L130 PetriNetUnfolder]: 3/92 cut-off events. [2022-12-11 20:36:22,542 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:36:22,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 92 events. 3/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 18/106 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2022-12-11 20:36:22,545 INFO L137 encePairwiseOnDemand]: 86/93 looper letters, 9 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2022-12-11 20:36:22,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-11 20:36:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-11 20:36:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-12-11 20:36:22,562 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.9283154121863799 [2022-12-11 20:36:22,565 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 1 predicate places. [2022-12-11 20:36:22,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:22,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:22,569 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 206 flow [2022-12-11 20:36:22,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:22,569 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:22,570 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:22,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:36:22,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:22,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:22,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1875915451, now seen corresponding path program 1 times [2022-12-11 20:36:22,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:22,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674993368] [2022-12-11 20:36:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:22,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:22,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:22,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674993368] [2022-12-11 20:36:22,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674993368] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:22,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558644677] [2022-12-11 20:36:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:22,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:22,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:36:22,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 20:36:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:22,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 20:36:22,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:23,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:23,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558644677] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:23,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:23,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-11 20:36:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701623411] [2022-12-11 20:36:23,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-11 20:36:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-11 20:36:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-11 20:36:23,076 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 20:36:23,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 206 flow. Second operand has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:23,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:23,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 20:36:23,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:23,181 INFO L130 PetriNetUnfolder]: 3/101 cut-off events. [2022-12-11 20:36:23,181 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-11 20:36:23,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 101 events. 3/101 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 105. Up to 10 conditions per place. [2022-12-11 20:36:23,182 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 10 selfloop transitions, 9 changer transitions 0/95 dead transitions. [2022-12-11 20:36:23,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-11 20:36:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-11 20:36:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 723 transitions. [2022-12-11 20:36:23,188 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8637992831541219 [2022-12-11 20:36:23,189 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2022-12-11 20:36:23,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:23,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:23,191 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 264 flow [2022-12-11 20:36:23,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:23,192 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:23,192 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:23,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 20:36:23,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:23,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:23,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:23,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1869128357, now seen corresponding path program 2 times [2022-12-11 20:36:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:23,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736250292] [2022-12-11 20:36:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:23,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:23,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736250292] [2022-12-11 20:36:23,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736250292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:23,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722591304] [2022-12-11 20:36:23,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 20:36:23,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:23,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:23,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:36:23,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 20:36:23,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 20:36:23,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:36:23,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-11 20:36:23,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:23,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:23,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722591304] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:23,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:23,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-12-11 20:36:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340744530] [2022-12-11 20:36:23,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:23,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-11 20:36:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-11 20:36:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-11 20:36:23,917 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 20:36:23,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 264 flow. Second operand has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:23,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:23,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 20:36:23,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:24,139 INFO L130 PetriNetUnfolder]: 3/129 cut-off events. [2022-12-11 20:36:24,139 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-11 20:36:24,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 129 events. 3/129 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 194. Up to 22 conditions per place. [2022-12-11 20:36:24,144 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 14 selfloop transitions, 21 changer transitions 0/111 dead transitions. [2022-12-11 20:36:24,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-11 20:36:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-11 20:36:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1677 transitions. [2022-12-11 20:36:24,150 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.858678955453149 [2022-12-11 20:36:24,151 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2022-12-11 20:36:24,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:24,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:24,154 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 111 transitions, 422 flow [2022-12-11 20:36:24,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:24,155 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:24,156 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:24,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-11 20:36:24,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-11 20:36:24,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash 526543515, now seen corresponding path program 3 times [2022-12-11 20:36:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:24,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416265270] [2022-12-11 20:36:24,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:24,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:24,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416265270] [2022-12-11 20:36:24,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416265270] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:24,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24246626] [2022-12-11 20:36:24,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:36:24,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:24,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:24,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:36:24,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 20:36:24,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-12-11 20:36:24,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:36:24,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-11 20:36:24,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:24,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:25,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24246626] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:25,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:25,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2022-12-11 20:36:25,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621451] [2022-12-11 20:36:25,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:25,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-11 20:36:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-11 20:36:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2022-12-11 20:36:25,229 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 93 [2022-12-11 20:36:25,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 111 transitions, 422 flow. Second operand has 31 states, 31 states have (on average 80.06451612903226) internal successors, (2482), 31 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:25,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:25,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 93 [2022-12-11 20:36:25,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:36:25,663 INFO L130 PetriNetUnfolder]: 3/178 cut-off events. [2022-12-11 20:36:25,663 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-12-11 20:36:25,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 178 events. 3/178 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 381. Up to 43 conditions per place. [2022-12-11 20:36:25,666 INFO L137 encePairwiseOnDemand]: 87/93 looper letters, 21 selfloop transitions, 42 changer transitions 0/139 dead transitions. [2022-12-11 20:36:25,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 139 transitions, 758 flow [2022-12-11 20:36:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-11 20:36:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-11 20:36:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3346 transitions. [2022-12-11 20:36:25,674 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8566308243727598 [2022-12-11 20:36:25,674 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 70 predicate places. [2022-12-11 20:36:25,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 139 transitions, 758 flow [2022-12-11 20:36:25,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 139 transitions, 758 flow [2022-12-11 20:36:25,676 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 139 transitions, 758 flow [2022-12-11 20:36:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 80.06451612903226) internal successors, (2482), 31 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:25,678 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:36:25,678 INFO L214 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:36:25,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-11 20:36:25,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:25,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:36:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:36:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1164740830, now seen corresponding path program 4 times [2022-12-11 20:36:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:36:25,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977204585] [2022-12-11 20:36:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:36:25,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:36:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:36:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:36:28,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977204585] [2022-12-11 20:36:28,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977204585] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:36:28,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949888116] [2022-12-11 20:36:28,568 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 20:36:28,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:36:28,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:36:28,572 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:36:28,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 20:36:28,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 20:36:28,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:36:28,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-11 20:36:28,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:36:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:32,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:36:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:36:36,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949888116] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:36:36,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:36:36,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 145 [2022-12-11 20:36:36,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979391439] [2022-12-11 20:36:36,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:36:36,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2022-12-11 20:36:36,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:36:36,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2022-12-11 20:36:36,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1256, Invalid=19624, Unknown=0, NotChecked=0, Total=20880 [2022-12-11 20:36:36,585 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-12-11 20:36:36,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 139 transitions, 758 flow. Second operand has 145 states, 145 states have (on average 62.241379310344826) internal successors, (9025), 145 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:36:36,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:36:36,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-12-11 20:36:36,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:40:13,152 INFO L130 PetriNetUnfolder]: 36232/139965 cut-off events. [2022-12-11 20:40:13,152 INFO L131 PetriNetUnfolder]: For 7875/7875 co-relation queries the response was YES. [2022-12-11 20:40:13,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214336 conditions, 139965 events. 36232/139965 cut-off events. For 7875/7875 co-relation queries the response was YES. Maximal size of possible extension queue 2071. Compared 2077854 event pairs, 0 based on Foata normal form. 0/128216 useless extension candidates. Maximal degree in co-relation 214281. Up to 18299 conditions per place. [2022-12-11 20:40:14,312 INFO L137 encePairwiseOnDemand]: 76/93 looper letters, 1461 selfloop transitions, 2230 changer transitions 1200/4996 dead transitions. [2022-12-11 20:40:14,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1185 places, 4996 transitions, 20317 flow [2022-12-11 20:40:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1025 states. [2022-12-11 20:40:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2022-12-11 20:40:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 67513 transitions. [2022-12-11 20:40:14,398 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7082402307894047 [2022-12-11 20:40:14,401 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 1094 predicate places. [2022-12-11 20:40:14,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 1185 places, 4996 transitions, 20317 flow [2022-12-11 20:40:14,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 865 places, 3796 transitions, 15531 flow [2022-12-11 20:40:14,722 INFO L495 AbstractCegarLoop]: Abstraction has has 865 places, 3796 transitions, 15531 flow [2022-12-11 20:40:14,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 62.241379310344826) internal successors, (9025), 145 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:40:14,725 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:40:14,726 INFO L214 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:40:14,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-11 20:40:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:40:14,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:40:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:40:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1491459372, now seen corresponding path program 1 times [2022-12-11 20:40:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:40:14,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353924894] [2022-12-11 20:40:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:40:14,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:40:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:40:17,040 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:40:17,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:40:17,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353924894] [2022-12-11 20:40:17,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353924894] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:40:17,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949269893] [2022-12-11 20:40:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:40:17,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:40:17,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:40:17,043 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:40:17,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 20:40:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:40:17,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-11 20:40:17,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:40:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:40:20,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:40:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:40:24,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949269893] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:40:24,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:40:24,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 153 [2022-12-11 20:40:24,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655401597] [2022-12-11 20:40:24,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:40:24,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 153 states [2022-12-11 20:40:24,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:40:24,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2022-12-11 20:40:24,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=21981, Unknown=0, NotChecked=0, Total=23256 [2022-12-11 20:40:24,720 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 93 [2022-12-11 20:40:24,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 3796 transitions, 15531 flow. Second operand has 153 states, 153 states have (on average 62.23529411764706) internal successors, (9522), 153 states have internal predecessors, (9522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:40:24,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:40:24,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 93 [2022-12-11 20:40:24,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand