/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:37:46,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:37:46,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:37:46,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:37:46,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:37:46,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:37:46,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:37:46,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:37:46,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:37:46,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:37:46,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:37:46,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:37:46,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:37:46,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:37:46,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:37:46,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:37:46,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:37:46,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:37:46,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:37:46,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:37:46,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:37:46,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:37:46,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:37:46,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:37:46,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 22:37:46,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:37:46,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:37:46,130 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:37:46,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:37:46,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:37:46,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:37:46,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:37:46,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:37:46,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:37:46,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:37:46,133 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:37:46,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:37:46,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:37:46,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:37:46,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:37:46,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:37:46,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:37:46,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:37:46,165 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:37:46,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:37:46,165 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:37:46,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:37:46,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:37:46,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:37:46,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:37:46,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:37:46,168 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:37:46,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:37:46,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:37:46,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:37:46,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:37:46,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:37:46,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:37:46,364 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:37:46,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2022-09-20 22:37:46,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c2b04d4/e9c56967b22a4d89ab30e50f2a463b6c/FLAGdd0f6d587 [2022-09-20 22:37:46,835 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:37:46,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2022-09-20 22:37:46,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c2b04d4/e9c56967b22a4d89ab30e50f2a463b6c/FLAGdd0f6d587 [2022-09-20 22:37:46,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c2b04d4/e9c56967b22a4d89ab30e50f2a463b6c [2022-09-20 22:37:46,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:37:46,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:37:46,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:37:46,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:37:46,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:37:46,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:37:46" (1/1) ... [2022-09-20 22:37:46,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e11d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:46, skipping insertion in model container [2022-09-20 22:37:46,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:37:46" (1/1) ... [2022-09-20 22:37:46,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:37:46,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:37:47,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2022-09-20 22:37:47,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:37:47,328 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:37:47,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2022-09-20 22:37:47,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:37:47,436 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:37:47,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47 WrapperNode [2022-09-20 22:37:47,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:37:47,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:37:47,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:37:47,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:37:47,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,486 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-09-20 22:37:47,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:37:47,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:37:47,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:37:47,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:37:47,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:37:47,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:37:47,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:37:47,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:37:47,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (1/1) ... [2022-09-20 22:37:47,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:37:47,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:37:47,544 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) [2022-09-20 22:37:47,546 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 [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-09-20 22:37:47,580 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:37:47,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:37:47,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:37:47,581 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:37:47,695 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:37:47,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:37:47,828 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:37:47,833 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:37:47,833 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:37:47,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:37:47 BoogieIcfgContainer [2022-09-20 22:37:47,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:37:47,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:37:47,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:37:47,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:37:47,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:37:46" (1/3) ... [2022-09-20 22:37:47,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c2f37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:37:47, skipping insertion in model container [2022-09-20 22:37:47,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:37:47" (2/3) ... [2022-09-20 22:37:47,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c2f37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:37:47, skipping insertion in model container [2022-09-20 22:37:47,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:37:47" (3/3) ... [2022-09-20 22:37:47,842 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_30-traces-oplus-vs-meet_true.i [2022-09-20 22:37:47,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:37:47,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-20 22:37:47,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:37:47,881 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-20 22:37:47,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 176 flow [2022-09-20 22:37:47,932 INFO L130 PetriNetUnfolder]: 2/83 cut-off events. [2022-09-20 22:37:47,932 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 22:37:47,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 2/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2022-09-20 22:37:47,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 84 transitions, 176 flow [2022-09-20 22:37:47,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 68 transitions, 139 flow [2022-09-20 22:37:47,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:37:47,952 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;@4c44d41f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:37:47,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:37:47,959 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2022-09-20 22:37:47,959 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:37:47,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:47,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:47,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:37:47,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:47,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1177444784, now seen corresponding path program 1 times [2022-09-20 22:37:47,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:47,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149750423] [2022-09-20 22:37:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:47,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149750423] [2022-09-20 22:37:48,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149750423] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 22:37:48,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057455344] [2022-09-20 22:37:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 22:37:48,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 22:37:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 22:37:48,282 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2022-09-20 22:37:48,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2022-09-20 22:37:48,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2022-09-20 22:37:48,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,402 INFO L130 PetriNetUnfolder]: 8/100 cut-off events. [2022-09-20 22:37:48,403 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 22:37:48,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 100 events. 8/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 185 event pairs, 2 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 89. Up to 10 conditions per place. [2022-09-20 22:37:48,405 INFO L137 encePairwiseOnDemand]: 74/84 looper letters, 7 selfloop transitions, 9 changer transitions 8/76 dead transitions. [2022-09-20 22:37:48,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 203 flow [2022-09-20 22:37:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:37:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:37:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 612 transitions. [2022-09-20 22:37:48,422 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-09-20 22:37:48,423 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 612 transitions. [2022-09-20 22:37:48,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 612 transitions. [2022-09-20 22:37:48,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:48,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 612 transitions. [2022-09-20 22:37:48,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2022-09-20 22:37:48,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2022-09-20 22:37:48,446 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 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) [2022-09-20 22:37:48,447 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 139 flow. Second operand 9 states and 612 transitions. [2022-09-20 22:37:48,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 203 flow [2022-09-20 22:37:48,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:37:48,458 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 166 flow [2022-09-20 22:37:48,460 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2022-09-20 22:37:48,462 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, 8 predicate places. [2022-09-20 22:37:48,463 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 166 flow [2022-09-20 22:37:48,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2022-09-20 22:37:48,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:48,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:48,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:37:48,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:37:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1404465541, now seen corresponding path program 1 times [2022-09-20 22:37:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:48,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640465694] [2022-09-20 22:37:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640465694] [2022-09-20 22:37:48,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640465694] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:37:48,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453305623] [2022-09-20 22:37:48,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:37:48,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:37:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:37:48,579 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 84 [2022-09-20 22:37:48,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2022-09-20 22:37:48,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 84 [2022-09-20 22:37:48,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,620 INFO L130 PetriNetUnfolder]: 6/94 cut-off events. [2022-09-20 22:37:48,620 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-20 22:37:48,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 94 events. 6/94 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 2 based on Foata normal form. 3/97 useless extension candidates. Maximal degree in co-relation 135. Up to 19 conditions per place. [2022-09-20 22:37:48,621 INFO L137 encePairwiseOnDemand]: 80/84 looper letters, 13 selfloop transitions, 4 changer transitions 0/68 dead transitions. [2022-09-20 22:37:48,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 68 transitions, 204 flow [2022-09-20 22:37:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:37:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:37:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2022-09-20 22:37:48,628 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8134920634920635 [2022-09-20 22:37:48,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2022-09-20 22:37:48,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2022-09-20 22:37:48,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:48,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2022-09-20 22:37:48,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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) [2022-09-20 22:37:48,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-09-20 22:37:48,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2022-09-20 22:37:48,630 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 166 flow. Second operand 3 states and 205 transitions. [2022-09-20 22:37:48,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 68 transitions, 204 flow [2022-09-20 22:37:48,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 179 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-09-20 22:37:48,632 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 149 flow [2022-09-20 22:37:48,632 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2022-09-20 22:37:48,633 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, 1 predicate places. [2022-09-20 22:37:48,633 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 149 flow [2022-09-20 22:37:48,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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) [2022-09-20 22:37:48,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:48,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:48,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:37:48,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:37:48,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:48,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1910614427, now seen corresponding path program 1 times [2022-09-20 22:37:48,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:48,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439605357] [2022-09-20 22:37:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439605357] [2022-09-20 22:37:48,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439605357] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:37:48,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711821553] [2022-09-20 22:37:48,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:37:48,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:37:48,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:37:48,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 84 [2022-09-20 22:37:48,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 149 flow. Second operand has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2022-09-20 22:37:48,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 84 [2022-09-20 22:37:48,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,852 INFO L130 PetriNetUnfolder]: 1/67 cut-off events. [2022-09-20 22:37:48,852 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-09-20 22:37:48,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 67 events. 1/67 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 5/72 useless extension candidates. Maximal degree in co-relation 46. Up to 9 conditions per place. [2022-09-20 22:37:48,853 INFO L137 encePairwiseOnDemand]: 78/84 looper letters, 13 selfloop transitions, 5 changer transitions 3/60 dead transitions. [2022-09-20 22:37:48,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 174 flow [2022-09-20 22:37:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:37:48,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:37:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 303 transitions. [2022-09-20 22:37:48,854 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7214285714285714 [2022-09-20 22:37:48,854 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 303 transitions. [2022-09-20 22:37:48,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 303 transitions. [2022-09-20 22:37:48,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:48,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 303 transitions. [2022-09-20 22:37:48,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:37:48,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2022-09-20 22:37:48,856 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2022-09-20 22:37:48,856 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 149 flow. Second operand 5 states and 303 transitions. [2022-09-20 22:37:48,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 174 flow [2022-09-20 22:37:48,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:37:48,858 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 131 flow [2022-09-20 22:37:48,858 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2022-09-20 22:37:48,859 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2022-09-20 22:37:48,859 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 131 flow [2022-09-20 22:37:48,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2022-09-20 22:37:48,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:37:48,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:37:48,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:37:48,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:37:48,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:37:48,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1764941671, now seen corresponding path program 2 times [2022-09-20 22:37:48,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:37:48,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552405164] [2022-09-20 22:37:48,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:37:48,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:37:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:37:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:37:48,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:37:48,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552405164] [2022-09-20 22:37:48,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552405164] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:37:48,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:37:48,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:37:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904419953] [2022-09-20 22:37:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:37:48,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:37:48,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:37:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:37:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:37:48,958 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 84 [2022-09-20 22:37:48,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2022-09-20 22:37:48,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:37:48,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 84 [2022-09-20 22:37:48,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:37:48,998 INFO L130 PetriNetUnfolder]: 1/57 cut-off events. [2022-09-20 22:37:48,998 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-09-20 22:37:48,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 57 events. 1/57 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 1/58 useless extension candidates. Maximal degree in co-relation 34. Up to 8 conditions per place. [2022-09-20 22:37:48,999 INFO L137 encePairwiseOnDemand]: 80/84 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2022-09-20 22:37:48,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 162 flow [2022-09-20 22:37:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 22:37:48,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 22:37:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 300 transitions. [2022-09-20 22:37:49,000 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2022-09-20 22:37:49,000 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 300 transitions. [2022-09-20 22:37:49,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 300 transitions. [2022-09-20 22:37:49,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:37:49,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 300 transitions. [2022-09-20 22:37:49,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.0) internal successors, (300), 5 states have internal predecessors, (300), 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) [2022-09-20 22:37:49,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2022-09-20 22:37:49,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 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) [2022-09-20 22:37:49,002 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 131 flow. Second operand 5 states and 300 transitions. [2022-09-20 22:37:49,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 162 flow [2022-09-20 22:37:49,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 155 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 22:37:49,004 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2022-09-20 22:37:49,004 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2022-09-20 22:37:49,004 INFO L287 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2022-09-20 22:37:49,004 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2022-09-20 22:37:49,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 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) [2022-09-20 22:37:49,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 22:37:49,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-09-20 22:37:49,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 22:37:49,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:37:49,008 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-09-20 22:37:49,010 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 22:37:49,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 22:37:49,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 10:37:49 BasicIcfg [2022-09-20 22:37:49,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 22:37:49,015 INFO L158 Benchmark]: Toolchain (without parser) took 2157.97ms. Allocated memory was 175.1MB in the beginning and 238.0MB in the end (delta: 62.9MB). Free memory was 110.9MB in the beginning and 176.3MB in the end (delta: -65.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:37:49,015 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 22:37:49,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.35ms. Allocated memory is still 175.1MB. Free memory was 110.6MB in the beginning and 137.8MB in the end (delta: -27.2MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.29ms. Allocated memory is still 175.1MB. Free memory was 137.8MB in the beginning and 135.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,016 INFO L158 Benchmark]: Boogie Preprocessor took 25.78ms. Allocated memory is still 175.1MB. Free memory was 135.7MB in the beginning and 134.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,016 INFO L158 Benchmark]: RCFGBuilder took 321.66ms. Allocated memory is still 175.1MB. Free memory was 134.7MB in the beginning and 122.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,017 INFO L158 Benchmark]: TraceAbstraction took 1177.64ms. Allocated memory was 175.1MB in the beginning and 238.0MB in the end (delta: 62.9MB). Free memory was 121.6MB in the beginning and 176.3MB in the end (delta: -54.8MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-09-20 22:37:49,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 175.1MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 580.35ms. Allocated memory is still 175.1MB. Free memory was 110.6MB in the beginning and 137.8MB in the end (delta: -27.2MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.29ms. Allocated memory is still 175.1MB. Free memory was 137.8MB in the beginning and 135.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.78ms. Allocated memory is still 175.1MB. Free memory was 135.7MB in the beginning and 134.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 321.66ms. Allocated memory is still 175.1MB. Free memory was 134.7MB in the beginning and 122.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1177.64ms. Allocated memory was 175.1MB in the beginning and 238.0MB in the end (delta: 62.9MB). Free memory was 121.6MB in the beginning and 176.3MB in the end (delta: -54.8MB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 99 locations, 3 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: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 126 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 23 mSDtfsCounter, 126 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=1, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 554 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 22:37:49,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...