/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 --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:16:26,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:16:26,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:16:26,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:16:26,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:16:26,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:16:26,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:16:26,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:16:26,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:16:26,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:16:26,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:16:26,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:16:26,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:16:26,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:16:26,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:16:26,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:16:26,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:16:26,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:16:26,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:16:26,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:16:26,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:16:26,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:16:26,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:16:26,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:16:26,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:16:26,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:16:26,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:16:26,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:16:26,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:16:26,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:16:26,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:16:26,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:16:26,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:16:26,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:16:26,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:16:26,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:16:26,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:16:26,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:16:26,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:16:26,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:16:26,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:16:26,894 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 18:16:26,923 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:16:26,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:16:26,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:16:26,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:16:26,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:16:26,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:16:26,926 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:16:26,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:16:26,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:16:26,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:16:26,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:16:26,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:16:26,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:16:26,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:16:26,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:16:26,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:16:26,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:16:26,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:16:26,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:16:26,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:16:26,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:16:26,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:16:26,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:16:26,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:16:26,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:16:26,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:16:26,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:16:26,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:16:26,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:16:26,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:16:26,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:16:27,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:16:27,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:16:27,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:16:27,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:16:27,314 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:16:27,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-6.i [2022-12-12 18:16:28,612 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:16:29,058 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:16:29,059 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i [2022-12-12 18:16:29,072 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15e1d2d3/5293f0557aa34a14b440a0e6e4ce431d/FLAG6dbacb2e8 [2022-12-12 18:16:29,207 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15e1d2d3/5293f0557aa34a14b440a0e6e4ce431d [2022-12-12 18:16:29,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:16:29,210 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:16:29,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:16:29,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:16:29,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:16:29,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1548f3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29, skipping insertion in model container [2022-12-12 18:16:29,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:16:29,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:16:29,647 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2022-12-12 18:16:29,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,662 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,663 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,666 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:16:29,678 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:16:29,714 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2022-12-12 18:16:29,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:16:29,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:16:29,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:16:29,759 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:16:29,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29 WrapperNode [2022-12-12 18:16:29,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:16:29,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:16:29,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:16:29,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:16:29,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,827 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-12-12 18:16:29,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:16:29,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:16:29,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:16:29,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:16:29,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,859 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:16:29,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:16:29,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:16:29,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:16:29,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (1/1) ... [2022-12-12 18:16:29,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:16:29,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:29,909 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 18:16:29,933 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 18:16:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-12 18:16:29,950 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-12 18:16:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-12 18:16:29,950 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-12 18:16:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:16:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:16:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:16:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:16:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:16:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:16:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:16:29,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:16:29,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:16:29,952 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 18:16:30,167 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:16:30,168 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:16:30,345 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:16:30,351 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:16:30,352 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 18:16:30,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:16:30 BoogieIcfgContainer [2022-12-12 18:16:30,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:16:30,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:16:30,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:16:30,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:16:30,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:16:29" (1/3) ... [2022-12-12 18:16:30,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6400bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:16:30, skipping insertion in model container [2022-12-12 18:16:30,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:16:29" (2/3) ... [2022-12-12 18:16:30,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6400bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:16:30, skipping insertion in model container [2022-12-12 18:16:30,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:16:30" (3/3) ... [2022-12-12 18:16:30,362 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2022-12-12 18:16:30,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:16:30,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 18:16:30,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:16:30,430 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 18:16:30,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 93 transitions, 196 flow [2022-12-12 18:16:30,515 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2022-12-12 18:16:30,515 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:16:30,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-12 18:16:30,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 93 transitions, 196 flow [2022-12-12 18:16:30,533 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 91 transitions, 188 flow [2022-12-12 18:16:30,535 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:16:30,561 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 91 transitions, 188 flow [2022-12-12 18:16:30,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 91 transitions, 188 flow [2022-12-12 18:16:30,617 INFO L130 PetriNetUnfolder]: 7/91 cut-off events. [2022-12-12 18:16:30,618 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:16:30,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 91 events. 7/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2022-12-12 18:16:30,621 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 91 transitions, 188 flow [2022-12-12 18:16:30,621 INFO L226 LiptonReduction]: Number of co-enabled transitions 1914 [2022-12-12 18:16:34,394 INFO L241 LiptonReduction]: Total number of compositions: 79 [2022-12-12 18:16:34,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:16:34,413 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;@31322c6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:16:34,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 18:16:34,422 INFO L130 PetriNetUnfolder]: 3/26 cut-off events. [2022-12-12 18:16:34,423 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:16:34,423 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:34,424 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 18:16:34,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:34,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1807783243, now seen corresponding path program 1 times [2022-12-12 18:16:34,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:34,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127866688] [2022-12-12 18:16:34,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:34,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:34,710 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 18:16:34,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:34,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127866688] [2022-12-12 18:16:34,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127866688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:16:34,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:16:34,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:16:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142949204] [2022-12-12 18:16:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:16:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 18:16:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:34,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 18:16:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 18:16:34,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2022-12-12 18:16:34,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18:16:34,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:34,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2022-12-12 18:16:34,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:34,903 INFO L130 PetriNetUnfolder]: 657/1007 cut-off events. [2022-12-12 18:16:34,904 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-12 18:16:34,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 1007 events. 657/1007 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4231 event pairs, 175 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 2013. Up to 641 conditions per place. [2022-12-12 18:16:34,912 INFO L137 encePairwiseOnDemand]: 24/28 looper letters, 38 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2022-12-12 18:16:34,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 178 flow [2022-12-12 18:16:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 18:16:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 18:16:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2022-12-12 18:16:34,922 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2022-12-12 18:16:34,925 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2022-12-12 18:16:34,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 45 transitions, 178 flow [2022-12-12 18:16:34,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 44 transitions, 174 flow [2022-12-12 18:16:34,931 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 44 transitions, 174 flow [2022-12-12 18:16:34,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18:16:34,931 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:34,931 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:34,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:16:34,932 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:34,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash 206704716, now seen corresponding path program 1 times [2022-12-12 18:16:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:34,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866973370] [2022-12-12 18:16:34,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:34,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:35,035 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 18:16:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:35,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866973370] [2022-12-12 18:16:35,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866973370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:35,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146911325] [2022-12-12 18:16:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:35,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:35,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:35,039 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 18:16:35,086 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 18:16:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:35,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-12 18:16:35,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:35,213 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 18:16:35,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:35,228 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 18:16:35,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146911325] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:35,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:35,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-12 18:16:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580536929] [2022-12-12 18:16:35,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 18:16:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 18:16:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-12 18:16:35,231 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2022-12-12 18:16:35,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 44 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 18:16:35,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:35,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2022-12-12 18:16:35,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:35,481 INFO L130 PetriNetUnfolder]: 913/1399 cut-off events. [2022-12-12 18:16:35,481 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-12 18:16:35,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 1399 events. 913/1399 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5992 event pairs, 175 based on Foata normal form. 0/651 useless extension candidates. Maximal degree in co-relation 4165. Up to 1025 conditions per place. [2022-12-12 18:16:35,491 INFO L137 encePairwiseOnDemand]: 25/28 looper letters, 86 selfloop transitions, 5 changer transitions 0/95 dead transitions. [2022-12-12 18:16:35,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 95 transitions, 560 flow [2022-12-12 18:16:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 18:16:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 18:16:35,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2022-12-12 18:16:35,493 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2022-12-12 18:16:35,494 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2022-12-12 18:16:35,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 95 transitions, 560 flow [2022-12-12 18:16:35,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 95 transitions, 560 flow [2022-12-12 18:16:35,503 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 95 transitions, 560 flow [2022-12-12 18:16:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 18:16:35,503 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:35,504 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:35,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 18:16:35,709 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 18:16:35,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1043870325, now seen corresponding path program 2 times [2022-12-12 18:16:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:35,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57232939] [2022-12-12 18:16:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57232939] [2022-12-12 18:16:35,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57232939] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:35,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459284265] [2022-12-12 18:16:35,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:16:35,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:35,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:35,949 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 18:16:35,983 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 18:16:36,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:16:36,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:16:36,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 18:16:36,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:36,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:36,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459284265] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:36,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:36,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-12 18:16:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890976655] [2022-12-12 18:16:36,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:36,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 18:16:36,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 18:16:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-12 18:16:36,183 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2022-12-12 18:16:36,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 95 transitions, 560 flow. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 18:16:36,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:36,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2022-12-12 18:16:36,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:36,797 INFO L130 PetriNetUnfolder]: 1681/2556 cut-off events. [2022-12-12 18:16:36,797 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 18:16:36,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10170 conditions, 2556 events. 1681/2556 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11035 event pairs, 175 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 10154. Up to 2177 conditions per place. [2022-12-12 18:16:36,830 INFO L137 encePairwiseOnDemand]: 25/28 looper letters, 182 selfloop transitions, 11 changer transitions 0/197 dead transitions. [2022-12-12 18:16:36,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 197 transitions, 1558 flow [2022-12-12 18:16:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 18:16:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 18:16:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 247 transitions. [2022-12-12 18:16:36,835 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7351190476190477 [2022-12-12 18:16:36,846 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2022-12-12 18:16:36,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 197 transitions, 1558 flow [2022-12-12 18:16:36,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 197 transitions, 1558 flow [2022-12-12 18:16:36,876 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 197 transitions, 1558 flow [2022-12-12 18:16:36,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 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 18:16:36,877 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:36,877 INFO L214 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:36,896 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 18:16:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-12 18:16:37,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2052466155, now seen corresponding path program 3 times [2022-12-12 18:16:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:37,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089229689] [2022-12-12 18:16:37,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:37,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:37,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089229689] [2022-12-12 18:16:37,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089229689] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:37,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178835970] [2022-12-12 18:16:37,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:16:37,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:37,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:37,285 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 18:16:37,288 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 18:16:37,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-12 18:16:37,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:16:37,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-12 18:16:37,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:37,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:37,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178835970] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:37,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:37,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 16 [2022-12-12 18:16:37,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881732877] [2022-12-12 18:16:37,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:37,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-12 18:16:37,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:37,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-12 18:16:37,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-12-12 18:16:37,507 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2022-12-12 18:16:37,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 197 transitions, 1558 flow. Second operand has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 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 18:16:37,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:37,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2022-12-12 18:16:37,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:16:38,000 INFO L130 PetriNetUnfolder]: 2193/3324 cut-off events. [2022-12-12 18:16:38,000 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 18:16:38,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16541 conditions, 3324 events. 2193/3324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14376 event pairs, 175 based on Foata normal form. 0/1616 useless extension candidates. Maximal degree in co-relation 16522. Up to 2945 conditions per place. [2022-12-12 18:16:38,025 INFO L137 encePairwiseOnDemand]: 25/28 looper letters, 246 selfloop transitions, 15 changer transitions 0/265 dead transitions. [2022-12-12 18:16:38,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 265 transitions, 2624 flow [2022-12-12 18:16:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 18:16:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 18:16:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 329 transitions. [2022-12-12 18:16:38,027 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.734375 [2022-12-12 18:16:38,029 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2022-12-12 18:16:38,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 265 transitions, 2624 flow [2022-12-12 18:16:38,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 265 transitions, 2624 flow [2022-12-12 18:16:38,055 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 265 transitions, 2624 flow [2022-12-12 18:16:38,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.352941176470588) internal successors, (91), 17 states have internal predecessors, (91), 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 18:16:38,057 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:16:38,057 INFO L214 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1] [2022-12-12 18:16:38,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 18:16:38,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:38,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:16:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:16:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1944325675, now seen corresponding path program 4 times [2022-12-12 18:16:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:16:38,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348722394] [2022-12-12 18:16:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:16:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:16:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:16:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:39,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:16:39,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348722394] [2022-12-12 18:16:39,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348722394] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:16:39,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512522554] [2022-12-12 18:16:39,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 18:16:39,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:16:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:16:39,044 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 18:16:39,071 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 18:16:39,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 18:16:39,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:16:39,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-12 18:16:39,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:16:39,705 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:39,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:16:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:16:40,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512522554] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:16:40,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:16:40,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-12-12 18:16:40,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769560909] [2022-12-12 18:16:40,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:16:40,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-12 18:16:40,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:16:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-12 18:16:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1750, Unknown=0, NotChecked=0, Total=2162 [2022-12-12 18:16:40,407 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2022-12-12 18:16:40,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 265 transitions, 2624 flow. Second operand has 47 states, 47 states have (on average 5.276595744680851) internal successors, (248), 47 states have internal predecessors, (248), 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 18:16:40,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:16:40,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2022-12-12 18:16:40,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:17:13,137 INFO L130 PetriNetUnfolder]: 153855/240906 cut-off events. [2022-12-12 18:17:13,143 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-12-12 18:17:13,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392059 conditions, 240906 events. 153855/240906 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 8116. Compared 2213234 event pairs, 250 based on Foata normal form. 0/117549 useless extension candidates. Maximal degree in co-relation 1392037. Up to 227603 conditions per place. [2022-12-12 18:17:15,354 INFO L137 encePairwiseOnDemand]: 17/28 looper letters, 9218 selfloop transitions, 9947 changer transitions 0/19169 dead transitions. [2022-12-12 18:17:15,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 19169 transitions, 230015 flow [2022-12-12 18:17:15,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-12-12 18:17:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2022-12-12 18:17:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 3001 transitions. [2022-12-12 18:17:15,365 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7823253388946819 [2022-12-12 18:17:15,366 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 168 predicate places. [2022-12-12 18:17:15,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 19169 transitions, 230015 flow [2022-12-12 18:17:16,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 19169 transitions, 230015 flow [2022-12-12 18:17:16,869 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 19169 transitions, 230015 flow [2022-12-12 18:17:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.276595744680851) internal successors, (248), 47 states have internal predecessors, (248), 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 18:17:16,870 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:17:16,870 INFO L214 CegarLoopForPetriNet]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:17:16,879 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 18:17:17,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:17:17,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:17:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:17:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash -859475083, now seen corresponding path program 1 times [2022-12-12 18:17:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:17:17,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550531620] [2022-12-12 18:17:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:17:17,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:17:17,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:17:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:17:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:17:17,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550531620] [2022-12-12 18:17:17,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550531620] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:17:17,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515972306] [2022-12-12 18:17:17,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:17:17,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:17:17,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:17:17,937 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 18:17:17,939 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 18:17:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:17:18,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 52 conjunts are in the unsatisfiable core [2022-12-12 18:17:18,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:17:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 56 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:17:18,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:17:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:17:19,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515972306] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:17:19,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:17:19,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-12-12 18:17:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377698529] [2022-12-12 18:17:19,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:17:19,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-12 18:17:19,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:17:19,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-12 18:17:19,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=2311, Unknown=0, NotChecked=0, Total=2756 [2022-12-12 18:17:19,480 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 28 [2022-12-12 18:17:19,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 19169 transitions, 230015 flow. Second operand has 53 states, 53 states have (on average 5.30188679245283) internal successors, (281), 53 states have internal predecessors, (281), 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 18:17:19,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:17:19,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 28 [2022-12-12 18:17:19,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 18:29:21,387 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 18:29:21,402 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 18:29:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2022-12-12 18:29:21,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 18:29:21,944 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 18:29:22,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:22,140 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 4/28 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 3588030 conditions, 522830 events (338742/522829 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 82559. Compared 5849526 event pairs, 64 based on Foata normal form. 0/262311 useless extension candidates. Maximal degree in co-relation 3588005. Up to 507018 conditions per place.). [2022-12-12 18:29:22,141 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 18:29:22,141 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 18:29:22,142 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-12-12 18:29:22,145 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:29:22,145 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:29:22,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:29:22 BasicIcfg [2022-12-12 18:29:22,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:29:22,149 INFO L158 Benchmark]: Toolchain (without parser) took 772938.63ms. Allocated memory was 175.1MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 149.5MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 5.9GB. Max. memory is 8.0GB. [2022-12-12 18:29:22,149 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 104.4MB in the beginning and 104.3MB in the end (delta: 51.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:29:22,150 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.47ms. Allocated memory is still 175.1MB. Free memory was 149.2MB in the beginning and 129.0MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 18:29:22,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.40ms. Allocated memory is still 175.1MB. Free memory was 129.0MB in the beginning and 126.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:29:22,150 INFO L158 Benchmark]: Boogie Preprocessor took 47.59ms. Allocated memory is still 175.1MB. Free memory was 126.8MB in the beginning and 125.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:29:22,151 INFO L158 Benchmark]: RCFGBuilder took 475.99ms. Allocated memory is still 175.1MB. Free memory was 125.1MB in the beginning and 147.3MB in the end (delta: -22.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 18:29:22,151 INFO L158 Benchmark]: TraceAbstraction took 771792.71ms. Allocated memory was 175.1MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 146.2MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. [2022-12-12 18:29:22,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 127.9MB. Free memory was 104.4MB in the beginning and 104.3MB in the end (delta: 51.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 543.47ms. Allocated memory is still 175.1MB. Free memory was 149.2MB in the beginning and 129.0MB in the end (delta: 20.2MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 68.40ms. Allocated memory is still 175.1MB. Free memory was 129.0MB in the beginning and 126.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.59ms. Allocated memory is still 175.1MB. Free memory was 126.8MB in the beginning and 125.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 475.99ms. Allocated memory is still 175.1MB. Free memory was 125.1MB in the beginning and 147.3MB in the end (delta: -22.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 771792.71ms. Allocated memory was 175.1MB in the beginning and 6.1GB in the end (delta: 5.9GB). Free memory was 146.2MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 91 PlacesBefore, 32 PlacesAfterwards, 91 TransitionsBefore, 28 TransitionsAfterwards, 1914 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 47 ConcurrentYvCompositions, 6 ChoiceCompositions, 79 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1670, independent: 1655, independent conditional: 1655, independent unconditional: 0, dependent: 15, dependent conditional: 15, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1670, independent: 1655, independent conditional: 0, independent unconditional: 1655, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1670, independent: 1655, independent conditional: 0, independent unconditional: 1655, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1670, independent: 1655, independent conditional: 0, independent unconditional: 1655, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1406, independent: 1395, independent conditional: 0, independent unconditional: 1395, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1406, independent: 1395, independent conditional: 0, independent unconditional: 1395, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 57, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1670, independent: 260, independent conditional: 0, independent unconditional: 260, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 1406, unknown conditional: 0, unknown unconditional: 1406] , Statistics on independence cache: Total cache size (in pairs): 2636, Positive cache size: 2625, Positive conditional cache size: 0, Positive unconditional cache size: 2625, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 4/28 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 3588030 conditions, 522830 events (338742/522829 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 82559. Compared 5849526 event pairs, 64 based on Foata normal form. 0/262311 useless extension candidates. Maximal degree in co-relation 3588005. Up to 507018 conditions per place.). - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 4/28 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 3588030 conditions, 522830 events (338742/522829 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 82559. Compared 5849526 event pairs, 64 based on Foata normal form. 0/262311 useless extension candidates. Maximal degree in co-relation 3588005. Up to 507018 conditions per place.). - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (53states, 4/28 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 3588030 conditions, 522830 events (338742/522829 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 82559. Compared 5849526 event pairs, 64 based on Foata normal form. 0/262311 useless extension candidates. Maximal degree in co-relation 3588005. Up to 507018 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 109 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.6s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 771.7s, OverallIterations: 6, TraceHistogramMax: 14, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 759.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8053 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8053 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 8.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3923 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12871 IncrementalHoareTripleChecker+Invalid, 16794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3923 mSolverCounterUnsat, 0 mSDtfsCounter, 12871 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 536 GetRequests, 61 SyntacticMatches, 8 SemanticMatches, 467 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41830 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230015occurred in iteration=5, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 2280 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1011 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 134/831 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