/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 16:28:48,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 16:28:48,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 16:28:48,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 16:28:48,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 16:28:48,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 16:28:48,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 16:28:48,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 16:28:48,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 16:28:48,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 16:28:48,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 16:28:48,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 16:28:48,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 16:28:48,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 16:28:48,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 16:28:49,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 16:28:49,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 16:28:49,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 16:28:49,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 16:28:49,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 16:28:49,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 16:28:49,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 16:28:49,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 16:28:49,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 16:28:49,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 16:28:49,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 16:28:49,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 16:28:49,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 16:28:49,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 16:28:49,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 16:28:49,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 16:28:49,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 16:28:49,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 16:28:49,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 16:28:49,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 16:28:49,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 16:28:49,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 16:28:49,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 16:28:49,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 16:28:49,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 16:28:49,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 16:28:49,026 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-SemanticLbe.epf [2022-12-12 16:28:49,050 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 16:28:49,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 16:28:49,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 16:28:49,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 16:28:49,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 16:28:49,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 16:28:49,052 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 16:28:49,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 16:28:49,052 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 16:28:49,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 16:28:49,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 16:28:49,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 16:28:49,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 16:28:49,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 16:28:49,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 16:28:49,053 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 16:28:49,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:28:49,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 16:28:49,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 16:28:49,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 16:28:49,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 16:28:49,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 16:28:49,055 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 16:28:49,055 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 16:28:49,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 16:28:49,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 16:28:49,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 16:28:49,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 16:28:49,314 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 16:28:49,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-12-12 16:28:50,140 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 16:28:50,305 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 16:28:50,305 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-12-12 16:28:50,310 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb2c6d375/3fbc087403cb418a8ed9775ee3ac1550/FLAGa18c9db0b [2022-12-12 16:28:50,319 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb2c6d375/3fbc087403cb418a8ed9775ee3ac1550 [2022-12-12 16:28:50,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 16:28:50,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 16:28:50,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 16:28:50,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 16:28:50,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 16:28:50,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178998fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50, skipping insertion in model container [2022-12-12 16:28:50,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 16:28:50,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 16:28:50,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,506 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c[2957,2970] [2022-12-12 16:28:50,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:28:50,520 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 16:28:50,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,540 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,542 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,543 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,548 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 16:28:50,549 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 16:28:50,560 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c[2957,2970] [2022-12-12 16:28:50,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:28:50,572 INFO L208 MainTranslator]: Completed translation [2022-12-12 16:28:50,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50 WrapperNode [2022-12-12 16:28:50,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 16:28:50,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 16:28:50,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 16:28:50,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 16:28:50,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,610 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-12-12 16:28:50,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 16:28:50,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 16:28:50,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 16:28:50,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 16:28:50,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 16:28:50,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 16:28:50,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 16:28:50,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 16:28:50,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (1/1) ... [2022-12-12 16:28:50,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:28:50,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:28:50,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 16:28:50,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 16:28:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 16:28:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 16:28:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 16:28:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 16:28:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 16:28:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 16:28:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 16:28:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 16:28:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 16:28:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 16:28:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 16:28:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 16:28:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 16:28:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 16:28:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 16:28:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 16:28:50,710 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 16:28:50,826 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 16:28:50,827 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 16:28:50,988 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 16:28:51,033 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 16:28:51,033 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 16:28:51,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:28:51 BoogieIcfgContainer [2022-12-12 16:28:51,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 16:28:51,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 16:28:51,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 16:28:51,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 16:28:51,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 04:28:50" (1/3) ... [2022-12-12 16:28:51,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7dd337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:28:51, skipping insertion in model container [2022-12-12 16:28:51,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:28:50" (2/3) ... [2022-12-12 16:28:51,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7dd337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:28:51, skipping insertion in model container [2022-12-12 16:28:51,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:28:51" (3/3) ... [2022-12-12 16:28:51,041 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2022-12-12 16:28:51,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 16:28:51,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 16:28:51,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 16:28:51,096 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 16:28:51,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 108 transitions, 240 flow [2022-12-12 16:28:51,156 INFO L130 PetriNetUnfolder]: 8/105 cut-off events. [2022-12-12 16:28:51,157 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:28:51,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 105 events. 8/105 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-12 16:28:51,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 108 transitions, 240 flow [2022-12-12 16:28:51,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 95 transitions, 208 flow [2022-12-12 16:28:51,164 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 16:28:51,175 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 95 transitions, 208 flow [2022-12-12 16:28:51,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 95 transitions, 208 flow [2022-12-12 16:28:51,197 INFO L130 PetriNetUnfolder]: 8/95 cut-off events. [2022-12-12 16:28:51,198 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:28:51,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 8/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-12-12 16:28:51,200 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 95 transitions, 208 flow [2022-12-12 16:28:51,200 INFO L226 LiptonReduction]: Number of co-enabled transitions 1010 [2022-12-12 16:28:53,794 INFO L241 LiptonReduction]: Total number of compositions: 70 [2022-12-12 16:28:53,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 16:28:53,814 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;@5d42d0fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 16:28:53,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 16:28:53,819 INFO L130 PetriNetUnfolder]: 3/24 cut-off events. [2022-12-12 16:28:53,820 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 16:28:53,820 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:28:53,820 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:28:53,820 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)] === [2022-12-12 16:28:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:28:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -239323139, now seen corresponding path program 1 times [2022-12-12 16:28:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:28:53,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685621849] [2022-12-12 16:28:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:28:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:28:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:28:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:28:54,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685621849] [2022-12-12 16:28:54,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685621849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:28:54,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:28:54,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 16:28:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532302065] [2022-12-12 16:28:54,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:28:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 16:28:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:28:54,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 16:28:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 16:28:54,542 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:28:54,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:54,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:28:54,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:28:54,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:28:54,719 INFO L130 PetriNetUnfolder]: 601/870 cut-off events. [2022-12-12 16:28:54,720 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-12-12 16:28:54,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1821 conditions, 870 events. 601/870 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3041 event pairs, 39 based on Foata normal form. 0/706 useless extension candidates. Maximal degree in co-relation 1496. Up to 659 conditions per place. [2022-12-12 16:28:54,725 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 46 selfloop transitions, 5 changer transitions 0/51 dead transitions. [2022-12-12 16:28:54,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 234 flow [2022-12-12 16:28:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 16:28:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 16:28:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-12-12 16:28:54,732 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.52 [2022-12-12 16:28:54,733 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 68 flow. Second operand 4 states and 52 transitions. [2022-12-12 16:28:54,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 234 flow [2022-12-12 16:28:54,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-12 16:28:54,737 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 88 flow [2022-12-12 16:28:54,738 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2022-12-12 16:28:54,740 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2022-12-12 16:28:54,740 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 88 flow [2022-12-12 16:28:54,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:54,741 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:28:54,741 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] [2022-12-12 16:28:54,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 16:28:54,741 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)] === [2022-12-12 16:28:54,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:28:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -689224345, now seen corresponding path program 1 times [2022-12-12 16:28:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:28:54,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616424181] [2022-12-12 16:28:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:28:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:28:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:28:55,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:28:55,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616424181] [2022-12-12 16:28:55,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616424181] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:28:55,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240803951] [2022-12-12 16:28:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:55,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:28:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:28:55,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:28:55,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 16:28:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:28:55,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 16:28:55,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:28:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:28:55,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:28:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:28:55,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240803951] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:28:55,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:28:55,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-12-12 16:28:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220426982] [2022-12-12 16:28:55,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:28:55,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 16:28:55,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:28:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 16:28:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-12-12 16:28:55,527 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:28:55,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 88 flow. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:55,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:28:55,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:28:55,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:28:56,689 INFO L130 PetriNetUnfolder]: 1420/2135 cut-off events. [2022-12-12 16:28:56,689 INFO L131 PetriNetUnfolder]: For 453/453 co-relation queries the response was YES. [2022-12-12 16:28:56,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 2135 events. 1420/2135 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9126 event pairs, 71 based on Foata normal form. 0/1967 useless extension candidates. Maximal degree in co-relation 1438. Up to 373 conditions per place. [2022-12-12 16:28:56,700 INFO L137 encePairwiseOnDemand]: 14/25 looper letters, 194 selfloop transitions, 95 changer transitions 8/297 dead transitions. [2022-12-12 16:28:56,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 297 transitions, 1378 flow [2022-12-12 16:28:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 16:28:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 16:28:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 307 transitions. [2022-12-12 16:28:56,706 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3961290322580645 [2022-12-12 16:28:56,706 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 88 flow. Second operand 31 states and 307 transitions. [2022-12-12 16:28:56,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 297 transitions, 1378 flow [2022-12-12 16:28:56,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 297 transitions, 1378 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 16:28:56,712 INFO L231 Difference]: Finished difference. Result has 68 places, 141 transitions, 740 flow [2022-12-12 16:28:56,713 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=740, PETRI_PLACES=68, PETRI_TRANSITIONS=141} [2022-12-12 16:28:56,713 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2022-12-12 16:28:56,714 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 141 transitions, 740 flow [2022-12-12 16:28:56,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:56,716 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:28:56,716 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] [2022-12-12 16:28:56,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 16:28:56,916 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 [2022-12-12 16:28:56,916 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)] === [2022-12-12 16:28:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:28:56,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1305400516, now seen corresponding path program 1 times [2022-12-12 16:28:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:28:56,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850272958] [2022-12-12 16:28:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:28:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:28:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:28:57,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:28:57,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850272958] [2022-12-12 16:28:57,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850272958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:28:57,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:28:57,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:28:57,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687519825] [2022-12-12 16:28:57,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:28:57,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:28:57,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:28:57,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:28:57,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:28:57,155 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:28:57,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 141 transitions, 740 flow. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:57,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:28:57,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:28:57,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:28:57,511 INFO L130 PetriNetUnfolder]: 2164/3241 cut-off events. [2022-12-12 16:28:57,511 INFO L131 PetriNetUnfolder]: For 6364/6364 co-relation queries the response was YES. [2022-12-12 16:28:57,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10935 conditions, 3241 events. 2164/3241 cut-off events. For 6364/6364 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15343 event pairs, 356 based on Foata normal form. 14/3079 useless extension candidates. Maximal degree in co-relation 7006. Up to 1423 conditions per place. [2022-12-12 16:28:57,528 INFO L137 encePairwiseOnDemand]: 20/25 looper letters, 192 selfloop transitions, 50 changer transitions 3/245 dead transitions. [2022-12-12 16:28:57,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 245 transitions, 1728 flow [2022-12-12 16:28:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:28:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:28:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2022-12-12 16:28:57,530 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.608 [2022-12-12 16:28:57,530 INFO L175 Difference]: Start difference. First operand has 68 places, 141 transitions, 740 flow. Second operand 5 states and 76 transitions. [2022-12-12 16:28:57,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 245 transitions, 1728 flow [2022-12-12 16:28:57,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 245 transitions, 1549 flow, removed 86 selfloop flow, removed 1 redundant places. [2022-12-12 16:28:57,575 INFO L231 Difference]: Finished difference. Result has 73 places, 167 transitions, 907 flow [2022-12-12 16:28:57,575 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=907, PETRI_PLACES=73, PETRI_TRANSITIONS=167} [2022-12-12 16:28:57,576 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 41 predicate places. [2022-12-12 16:28:57,576 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 167 transitions, 907 flow [2022-12-12 16:28:57,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:57,577 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:28:57,577 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] [2022-12-12 16:28:57,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 16:28:57,577 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)] === [2022-12-12 16:28:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:28:57,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1477703586, now seen corresponding path program 2 times [2022-12-12 16:28:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:28:57,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359976077] [2022-12-12 16:28:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:28:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:28:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:28:57,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:28:57,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359976077] [2022-12-12 16:28:57,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359976077] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:28:57,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:28:57,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 16:28:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532670661] [2022-12-12 16:28:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:28:57,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 16:28:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:28:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 16:28:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-12 16:28:57,955 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:28:57,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 167 transitions, 907 flow. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:57,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:28:57,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:28:57,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:28:58,507 INFO L130 PetriNetUnfolder]: 2795/4194 cut-off events. [2022-12-12 16:28:58,507 INFO L131 PetriNetUnfolder]: For 10196/10196 co-relation queries the response was YES. [2022-12-12 16:28:58,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14703 conditions, 4194 events. 2795/4194 cut-off events. For 10196/10196 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 20910 event pairs, 538 based on Foata normal form. 18/3988 useless extension candidates. Maximal degree in co-relation 10015. Up to 2931 conditions per place. [2022-12-12 16:28:58,530 INFO L137 encePairwiseOnDemand]: 17/25 looper letters, 232 selfloop transitions, 39 changer transitions 3/274 dead transitions. [2022-12-12 16:28:58,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 274 transitions, 2011 flow [2022-12-12 16:28:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 16:28:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 16:28:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2022-12-12 16:28:58,531 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.456 [2022-12-12 16:28:58,532 INFO L175 Difference]: Start difference. First operand has 73 places, 167 transitions, 907 flow. Second operand 10 states and 114 transitions. [2022-12-12 16:28:58,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 274 transitions, 2011 flow [2022-12-12 16:28:58,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 274 transitions, 2011 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-12 16:28:58,555 INFO L231 Difference]: Finished difference. Result has 88 places, 198 transitions, 1311 flow [2022-12-12 16:28:58,555 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1311, PETRI_PLACES=88, PETRI_TRANSITIONS=198} [2022-12-12 16:28:58,556 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2022-12-12 16:28:58,556 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 198 transitions, 1311 flow [2022-12-12 16:28:58,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:58,556 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:28:58,556 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] [2022-12-12 16:28:58,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 16:28:58,557 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)] === [2022-12-12 16:28:58,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:28:58,557 INFO L85 PathProgramCache]: Analyzing trace with hash -61533334, now seen corresponding path program 3 times [2022-12-12 16:28:58,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:28:58,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214290740] [2022-12-12 16:28:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:58,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:28:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:28:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:28:58,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:28:58,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214290740] [2022-12-12 16:28:58,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214290740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:28:58,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:28:58,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:28:58,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561673785] [2022-12-12 16:28:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:28:58,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:28:58,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:28:58,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:28:58,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:28:58,698 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:28:58,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 198 transitions, 1311 flow. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:58,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:28:58,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:28:58,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:28:59,091 INFO L130 PetriNetUnfolder]: 2522/3689 cut-off events. [2022-12-12 16:28:59,091 INFO L131 PetriNetUnfolder]: For 20502/20502 co-relation queries the response was YES. [2022-12-12 16:28:59,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14789 conditions, 3689 events. 2522/3689 cut-off events. For 20502/20502 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17074 event pairs, 381 based on Foata normal form. 134/3771 useless extension candidates. Maximal degree in co-relation 14177. Up to 1600 conditions per place. [2022-12-12 16:28:59,109 INFO L137 encePairwiseOnDemand]: 17/25 looper letters, 190 selfloop transitions, 113 changer transitions 0/303 dead transitions. [2022-12-12 16:28:59,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 303 transitions, 2654 flow [2022-12-12 16:28:59,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 16:28:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 16:28:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2022-12-12 16:28:59,110 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.385 [2022-12-12 16:28:59,110 INFO L175 Difference]: Start difference. First operand has 88 places, 198 transitions, 1311 flow. Second operand 8 states and 77 transitions. [2022-12-12 16:28:59,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 303 transitions, 2654 flow [2022-12-12 16:28:59,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 303 transitions, 2634 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-12 16:28:59,142 INFO L231 Difference]: Finished difference. Result has 88 places, 223 transitions, 2031 flow [2022-12-12 16:28:59,143 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2031, PETRI_PLACES=88, PETRI_TRANSITIONS=223} [2022-12-12 16:28:59,143 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2022-12-12 16:28:59,143 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 223 transitions, 2031 flow [2022-12-12 16:28:59,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:59,144 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:28:59,144 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] [2022-12-12 16:28:59,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 16:28:59,144 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)] === [2022-12-12 16:28:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:28:59,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1917254436, now seen corresponding path program 4 times [2022-12-12 16:28:59,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:28:59,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228857267] [2022-12-12 16:28:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:59,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:28:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:28:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:28:59,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:28:59,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228857267] [2022-12-12 16:28:59,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228857267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:28:59,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:28:59,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 16:28:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990934268] [2022-12-12 16:28:59,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:28:59,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 16:28:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:28:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 16:28:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 16:28:59,289 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 25 [2022-12-12 16:28:59,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 223 transitions, 2031 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:59,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:28:59,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 25 [2022-12-12 16:28:59,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:28:59,854 INFO L130 PetriNetUnfolder]: 4108/6030 cut-off events. [2022-12-12 16:28:59,854 INFO L131 PetriNetUnfolder]: For 39918/40121 co-relation queries the response was YES. [2022-12-12 16:28:59,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28025 conditions, 6030 events. 4108/6030 cut-off events. For 39918/40121 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 31747 event pairs, 520 based on Foata normal form. 195/6130 useless extension candidates. Maximal degree in co-relation 23440. Up to 3455 conditions per place. [2022-12-12 16:28:59,893 INFO L137 encePairwiseOnDemand]: 19/25 looper letters, 313 selfloop transitions, 92 changer transitions 0/431 dead transitions. [2022-12-12 16:28:59,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 431 transitions, 4843 flow [2022-12-12 16:28:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:28:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:28:59,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2022-12-12 16:28:59,895 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.584 [2022-12-12 16:28:59,895 INFO L175 Difference]: Start difference. First operand has 88 places, 223 transitions, 2031 flow. Second operand 5 states and 73 transitions. [2022-12-12 16:28:59,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 431 transitions, 4843 flow [2022-12-12 16:28:59,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 431 transitions, 4825 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-12 16:28:59,954 INFO L231 Difference]: Finished difference. Result has 93 places, 310 transitions, 3462 flow [2022-12-12 16:28:59,955 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3462, PETRI_PLACES=93, PETRI_TRANSITIONS=310} [2022-12-12 16:28:59,956 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2022-12-12 16:28:59,956 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 310 transitions, 3462 flow [2022-12-12 16:28:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:28:59,957 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:28:59,957 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] [2022-12-12 16:28:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 16:28:59,958 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)] === [2022-12-12 16:28:59,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:28:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1034872845, now seen corresponding path program 1 times [2022-12-12 16:28:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:28:59,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360358271] [2022-12-12 16:28:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:28:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:29:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:29:02,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:29:02,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:29:02,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360358271] [2022-12-12 16:29:02,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360358271] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:29:02,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55747105] [2022-12-12 16:29:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:29:02,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:29:02,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:29:02,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:29:02,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 16:29:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:29:03,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-12 16:29:03,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:29:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:29:03,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:29:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:29:05,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55747105] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:29:05,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:29:05,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 24 [2022-12-12 16:29:05,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264213904] [2022-12-12 16:29:05,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:29:05,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 16:29:05,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:29:05,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 16:29:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-12-12 16:29:05,627 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:29:05,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 310 transitions, 3462 flow. Second operand has 26 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:29:05,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:29:05,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:29:05,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:29:42,124 INFO L130 PetriNetUnfolder]: 19308/28298 cut-off events. [2022-12-12 16:29:42,124 INFO L131 PetriNetUnfolder]: For 193563/193563 co-relation queries the response was YES. [2022-12-12 16:29:42,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144772 conditions, 28298 events. 19308/28298 cut-off events. For 193563/193563 co-relation queries the response was YES. Maximal size of possible extension queue 1267. Compared 181714 event pairs, 740 based on Foata normal form. 39/28217 useless extension candidates. Maximal degree in co-relation 106207. Up to 6263 conditions per place. [2022-12-12 16:29:42,383 INFO L137 encePairwiseOnDemand]: 12/25 looper letters, 675 selfloop transitions, 1235 changer transitions 403/2313 dead transitions. [2022-12-12 16:29:42,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 2313 transitions, 27253 flow [2022-12-12 16:29:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-12-12 16:29:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2022-12-12 16:29:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 739 transitions. [2022-12-12 16:29:42,387 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.31446808510638297 [2022-12-12 16:29:42,387 INFO L175 Difference]: Start difference. First operand has 93 places, 310 transitions, 3462 flow. Second operand 94 states and 739 transitions. [2022-12-12 16:29:42,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 2313 transitions, 27253 flow [2022-12-12 16:29:42,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 2313 transitions, 26862 flow, removed 26 selfloop flow, removed 1 redundant places. [2022-12-12 16:29:42,814 INFO L231 Difference]: Finished difference. Result has 227 places, 1514 transitions, 21222 flow [2022-12-12 16:29:42,814 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=21222, PETRI_PLACES=227, PETRI_TRANSITIONS=1514} [2022-12-12 16:29:42,815 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2022-12-12 16:29:42,815 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 1514 transitions, 21222 flow [2022-12-12 16:29:42,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.76) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:29:42,815 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:29:42,815 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] [2022-12-12 16:29:42,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 16:29:43,018 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,SelfDestructingSolverStorable6 [2022-12-12 16:29:43,019 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)] === [2022-12-12 16:29:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:29:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash -855018116, now seen corresponding path program 1 times [2022-12-12 16:29:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:29:43,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081040204] [2022-12-12 16:29:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:29:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:29:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:29:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:29:43,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:29:43,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081040204] [2022-12-12 16:29:43,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081040204] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:29:43,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705510108] [2022-12-12 16:29:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:29:43,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:29:43,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:29:43,344 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:29:43,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 16:29:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:29:43,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 16:29:43,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:29:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:29:43,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:29:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:29:43,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705510108] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:29:43,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:29:43,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-12 16:29:43,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620751574] [2022-12-12 16:29:43,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:29:43,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 16:29:43,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:29:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 16:29:43,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-12 16:29:43,569 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 25 [2022-12-12 16:29:43,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1514 transitions, 21222 flow. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:29:43,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:29:43,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 25 [2022-12-12 16:29:43,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:29:54,070 INFO L130 PetriNetUnfolder]: 33943/48979 cut-off events. [2022-12-12 16:29:54,070 INFO L131 PetriNetUnfolder]: For 425876/426032 co-relation queries the response was YES. [2022-12-12 16:29:54,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292865 conditions, 48979 events. 33943/48979 cut-off events. For 425876/426032 co-relation queries the response was YES. Maximal size of possible extension queue 2280. Compared 331633 event pairs, 2078 based on Foata normal form. 1432/50392 useless extension candidates. Maximal degree in co-relation 292772. Up to 12071 conditions per place. [2022-12-12 16:29:54,831 INFO L137 encePairwiseOnDemand]: 15/25 looper letters, 1960 selfloop transitions, 2193 changer transitions 16/4175 dead transitions. [2022-12-12 16:29:54,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 4175 transitions, 65636 flow [2022-12-12 16:29:54,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-12 16:29:54,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-12 16:29:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 301 transitions. [2022-12-12 16:29:54,833 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4013333333333333 [2022-12-12 16:29:54,833 INFO L175 Difference]: Start difference. First operand has 227 places, 1514 transitions, 21222 flow. Second operand 30 states and 301 transitions. [2022-12-12 16:29:54,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 4175 transitions, 65636 flow [2022-12-12 16:30:05,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 4175 transitions, 63482 flow, removed 1073 selfloop flow, removed 15 redundant places. [2022-12-12 16:30:05,887 INFO L231 Difference]: Finished difference. Result has 245 places, 3193 transitions, 52919 flow [2022-12-12 16:30:05,888 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=20310, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=793, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=52919, PETRI_PLACES=245, PETRI_TRANSITIONS=3193} [2022-12-12 16:30:05,889 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 213 predicate places. [2022-12-12 16:30:05,889 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 3193 transitions, 52919 flow [2022-12-12 16:30:05,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:30:05,889 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:30:05,889 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] [2022-12-12 16:30:05,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 16:30:06,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:30:06,093 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)] === [2022-12-12 16:30:06,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:30:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash 2050962380, now seen corresponding path program 2 times [2022-12-12 16:30:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:30:06,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179386372] [2022-12-12 16:30:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:30:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:30:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:30:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:30:06,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:30:06,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179386372] [2022-12-12 16:30:06,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179386372] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:30:06,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897851697] [2022-12-12 16:30:06,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 16:30:06,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:30:06,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:30:06,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:30:06,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 16:30:06,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:30:06,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:30:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 16:30:06,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:30:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:30:06,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:30:06,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:30:06,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897851697] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:30:06,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:30:06,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2022-12-12 16:30:06,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199226634] [2022-12-12 16:30:06,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:30:06,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 16:30:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:30:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 16:30:06,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-12-12 16:30:06,859 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 25 [2022-12-12 16:30:06,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 3193 transitions, 52919 flow. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:30:06,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:30:06,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 25 [2022-12-12 16:30:06,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:30:34,622 INFO L130 PetriNetUnfolder]: 50878/73242 cut-off events. [2022-12-12 16:30:34,622 INFO L131 PetriNetUnfolder]: For 936127/936339 co-relation queries the response was YES. [2022-12-12 16:30:35,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512282 conditions, 73242 events. 50878/73242 cut-off events. For 936127/936339 co-relation queries the response was YES. Maximal size of possible extension queue 3357. Compared 520319 event pairs, 3639 based on Foata normal form. 564/73784 useless extension candidates. Maximal degree in co-relation 510242. Up to 27927 conditions per place. [2022-12-12 16:30:35,669 INFO L137 encePairwiseOnDemand]: 18/25 looper letters, 2593 selfloop transitions, 3175 changer transitions 0/5774 dead transitions. [2022-12-12 16:30:35,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 5774 transitions, 105756 flow [2022-12-12 16:30:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 16:30:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 16:30:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 224 transitions. [2022-12-12 16:30:35,670 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47157894736842104 [2022-12-12 16:30:35,671 INFO L175 Difference]: Start difference. First operand has 245 places, 3193 transitions, 52919 flow. Second operand 19 states and 224 transitions. [2022-12-12 16:30:35,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 5774 transitions, 105756 flow [2022-12-12 16:31:17,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 5774 transitions, 105069 flow, removed 287 selfloop flow, removed 9 redundant places. [2022-12-12 16:31:17,511 INFO L231 Difference]: Finished difference. Result has 266 places, 4745 transitions, 92965 flow [2022-12-12 16:31:17,513 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=52481, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1768, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1085, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=92965, PETRI_PLACES=266, PETRI_TRANSITIONS=4745} [2022-12-12 16:31:17,514 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 234 predicate places. [2022-12-12 16:31:17,514 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 4745 transitions, 92965 flow [2022-12-12 16:31:17,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:31:17,514 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:31:17,514 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] [2022-12-12 16:31:17,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 16:31:17,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:31:17,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:31:17,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:31:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2016932541, now seen corresponding path program 2 times [2022-12-12 16:31:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:31:17,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375458733] [2022-12-12 16:31:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:31:17,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:31:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:31:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:31:19,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:31:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375458733] [2022-12-12 16:31:19,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375458733] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:31:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672237602] [2022-12-12 16:31:19,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 16:31:19,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:31:19,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:31:19,545 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:31:19,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 16:31:19,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:31:19,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:31:19,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-12 16:31:19,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:31:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:31:20,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:31:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:31:21,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672237602] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:31:21,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:31:21,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 25 [2022-12-12 16:31:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635382785] [2022-12-12 16:31:21,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:31:21,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 16:31:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:31:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 16:31:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2022-12-12 16:31:21,236 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:31:21,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 4745 transitions, 92965 flow. Second operand has 27 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:31:21,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:31:21,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:31:21,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:32:56,402 INFO L130 PetriNetUnfolder]: 77628/113075 cut-off events. [2022-12-12 16:32:56,402 INFO L131 PetriNetUnfolder]: For 1767199/1767199 co-relation queries the response was YES. [2022-12-12 16:32:57,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839235 conditions, 113075 events. 77628/113075 cut-off events. For 1767199/1767199 co-relation queries the response was YES. Maximal size of possible extension queue 4988. Compared 860862 event pairs, 3859 based on Foata normal form. 120/113195 useless extension candidates. Maximal degree in co-relation 837665. Up to 32545 conditions per place. [2022-12-12 16:32:58,468 INFO L137 encePairwiseOnDemand]: 13/25 looper letters, 2207 selfloop transitions, 5574 changer transitions 829/8610 dead transitions. [2022-12-12 16:32:58,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 8610 transitions, 168509 flow [2022-12-12 16:32:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-12-12 16:32:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-12-12 16:32:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 873 transitions. [2022-12-12 16:32:58,474 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3145945945945946 [2022-12-12 16:32:58,474 INFO L175 Difference]: Start difference. First operand has 266 places, 4745 transitions, 92965 flow. Second operand 111 states and 873 transitions. [2022-12-12 16:32:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 8610 transitions, 168509 flow [2022-12-12 16:34:38,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 8610 transitions, 168133 flow, removed 148 selfloop flow, removed 4 redundant places. [2022-12-12 16:34:38,585 INFO L231 Difference]: Finished difference. Result has 459 places, 7024 transitions, 156505 flow [2022-12-12 16:34:38,588 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=92653, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3477, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=156505, PETRI_PLACES=459, PETRI_TRANSITIONS=7024} [2022-12-12 16:34:38,588 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 427 predicate places. [2022-12-12 16:34:38,589 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 7024 transitions, 156505 flow [2022-12-12 16:34:38,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:34:38,589 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:34:38,589 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:34:38,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 16:34:38,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 16:34:38,796 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 16:34:38,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:34:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1088005732, now seen corresponding path program 3 times [2022-12-12 16:34:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:34:38,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851500003] [2022-12-12 16:34:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:34:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:34:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:34:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:34:40,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:34:40,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851500003] [2022-12-12 16:34:40,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851500003] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:34:40,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847254134] [2022-12-12 16:34:40,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 16:34:40,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:34:40,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:34:40,669 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 16:34:40,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 16:34:40,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 16:34:40,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:34:40,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-12 16:34:40,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:34:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:34:41,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:34:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:34:50,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847254134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:34:50,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:34:50,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 26 [2022-12-12 16:34:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805085464] [2022-12-12 16:34:50,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:34:50,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-12 16:34:50,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:34:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-12 16:34:50,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=621, Unknown=1, NotChecked=0, Total=756 [2022-12-12 16:34:50,368 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 25 [2022-12-12 16:34:50,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 7024 transitions, 156505 flow. Second operand has 28 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 27 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:34:50,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:34:50,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 25 [2022-12-12 16:34:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:35:47,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-12 16:36:40,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-12 16:36:48,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-12 16:39:12,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-12-12 16:41:42,178 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 16:41:42,178 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 16:41:43,207 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 [2022-12-12 16:41:43,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 16:41:45,966 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 16:41:45,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 16:41:45,967 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2022-12-12 16:41:45,969 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 16:41:45,969 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 16:41:45,969 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 16:41:45,969 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1] [2022-12-12 16:41:45,987 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 16:41:45,987 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 16:41:45,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 04:41:45 BasicIcfg [2022-12-12 16:41:45,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 16:41:45,998 INFO L158 Benchmark]: Toolchain (without parser) took 775675.27ms. Allocated memory was 192.9MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 168.7MB in the beginning and 944.6MB in the end (delta: -775.9MB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. [2022-12-12 16:41:45,998 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 127.9MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 16:41:45,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.41ms. Allocated memory is still 192.9MB. Free memory was 168.2MB in the beginning and 154.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-12 16:41:45,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.44ms. Allocated memory is still 192.9MB. Free memory was 154.6MB in the beginning and 152.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 16:41:45,999 INFO L158 Benchmark]: Boogie Preprocessor took 30.11ms. Allocated memory is still 192.9MB. Free memory was 152.9MB in the beginning and 151.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 16:41:45,999 INFO L158 Benchmark]: RCFGBuilder took 392.91ms. Allocated memory is still 192.9MB. Free memory was 151.5MB in the beginning and 169.5MB in the end (delta: -18.1MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. [2022-12-12 16:41:45,999 INFO L158 Benchmark]: TraceAbstraction took 774961.77ms. Allocated memory was 192.9MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 168.5MB in the beginning and 944.6MB in the end (delta: -776.1MB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. [2022-12-12 16:41:46,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 127.9MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.41ms. Allocated memory is still 192.9MB. Free memory was 168.2MB in the beginning and 154.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.44ms. Allocated memory is still 192.9MB. Free memory was 154.6MB in the beginning and 152.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.11ms. Allocated memory is still 192.9MB. Free memory was 152.9MB in the beginning and 151.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 392.91ms. Allocated memory is still 192.9MB. Free memory was 151.5MB in the beginning and 169.5MB in the end (delta: -18.1MB). Peak memory consumption was 20.6MB. Max. memory is 8.0GB. * TraceAbstraction took 774961.77ms. Allocated memory was 192.9MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 168.5MB in the beginning and 944.6MB in the end (delta: -776.1MB). Peak memory consumption was 4.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 97 PlacesBefore, 32 PlacesAfterwards, 95 TransitionsBefore, 25 TransitionsAfterwards, 1010 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 43 TrivialYvCompositions, 22 ConcurrentYvCompositions, 5 ChoiceCompositions, 70 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 553, independent: 540, independent conditional: 540, independent unconditional: 0, dependent: 13, dependent conditional: 13, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 553, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 553, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 553, independent: 540, independent conditional: 0, independent unconditional: 540, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 516, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 516, independent: 506, independent conditional: 0, independent unconditional: 506, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 71, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 553, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 516, unknown conditional: 0, unknown unconditional: 516] , Statistics on independence cache: Total cache size (in pairs): 763, Positive cache size: 753, Positive conditional cache size: 0, Positive unconditional cache size: 753, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 126 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: 774.8s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 746.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 3288 SdHoareTripleChecker+Valid, 45.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3288 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 43.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 617 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12381 IncrementalHoareTripleChecker+Invalid, 13000 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 617 mSolverCounterUnsat, 12 mSDtfsCounter, 12381 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 748 GetRequests, 234 SyntacticMatches, 6 SemanticMatches, 508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21031 ImplicationChecksByTransitivity, 299.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156505occurred in iteration=10, InterpolantAutomatonStates: 317, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 23.2s InterpolantComputationTime, 379 NumberOfCodeBlocks, 379 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 494 ConstructedInterpolants, 0 QuantifiedInterpolants, 21361 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1059 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 23 InterpolantComputations, 5 PerfectInterpolantSequences, 5/46 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !ENTRY org.eclipse.osgi 4 0 2022-12-12 16:41:46.035 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb2c6d375/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb2c6d375/.metadata/.log.