/usr/bin/java -Xmx16000000000 -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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 10:01:09,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 10:01:09,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 10:01:09,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 10:01:09,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 10:01:09,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 10:01:09,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 10:01:09,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 10:01:09,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 10:01:09,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 10:01:09,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 10:01:09,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 10:01:09,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 10:01:09,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 10:01:09,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 10:01:09,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 10:01:09,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 10:01:09,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 10:01:09,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 10:01:09,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 10:01:09,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 10:01:09,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 10:01:09,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 10:01:09,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 10:01:09,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 10:01:09,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 10:01:09,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 10:01:09,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 10:01:09,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 10:01:09,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 10:01:09,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 10:01:09,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 10:01:09,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 10:01:09,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 10:01:09,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 10:01:09,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 10:01:09,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 10:01:09,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 10:01:09,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 10:01:09,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 10:01:09,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 10:01:09,708 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-After.epf [2022-01-19 10:01:09,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 10:01:09,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 10:01:09,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 10:01:09,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 10:01:09,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 10:01:09,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 10:01:09,734 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 10:01:09,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 10:01:09,734 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 10:01:09,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 10:01:09,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 10:01:09,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 10:01:09,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 10:01:09,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 10:01:09,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 10:01:09,737 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 10:01:09,738 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 10:01:09,738 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 10:01:09,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 10:01:09,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 10:01:09,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 10:01:09,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 10:01:09,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 10:01:09,979 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 10:01:09,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-6.i [2022-01-19 10:01:10,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88046aca3/800320c46d9a4bec9942ad97badbc32a/FLAG43f980481 [2022-01-19 10:01:10,576 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 10:01:10,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i [2022-01-19 10:01:10,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88046aca3/800320c46d9a4bec9942ad97badbc32a/FLAG43f980481 [2022-01-19 10:01:10,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88046aca3/800320c46d9a4bec9942ad97badbc32a [2022-01-19 10:01:10,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 10:01:10,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 10:01:10,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 10:01:10,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 10:01:10,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 10:01:10,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 10:01:10" (1/1) ... [2022-01-19 10:01:10,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff08e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:10, skipping insertion in model container [2022-01-19 10:01:10,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 10:01:10" (1/1) ... [2022-01-19 10:01:10,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 10:01:10,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 10:01:11,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i[30811,30824] [2022-01-19 10:01:11,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 10:01:11,254 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 10:01:11,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-6.i[30811,30824] [2022-01-19 10:01:11,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 10:01:11,326 INFO L208 MainTranslator]: Completed translation [2022-01-19 10:01:11,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11 WrapperNode [2022-01-19 10:01:11,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 10:01:11,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 10:01:11,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 10:01:11,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 10:01:11,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,380 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-01-19 10:01:11,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 10:01:11,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 10:01:11,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 10:01:11,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 10:01:11,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 10:01:11,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 10:01:11,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 10:01:11,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 10:01:11,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (1/1) ... [2022-01-19 10:01:11,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 10:01:11,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 10:01:11,444 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) [2022-01-19 10:01:11,454 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 [2022-01-19 10:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-01-19 10:01:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-01-19 10:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-01-19 10:01:11,477 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-01-19 10:01:11,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 10:01:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 10:01:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 10:01:11,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 10:01:11,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 10:01:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 10:01:11,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 10:01:11,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 10:01:11,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 10:01:11,485 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 10:01:11,566 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 10:01:11,567 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 10:01:11,781 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 10:01:11,787 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 10:01:11,787 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 10:01:11,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 10:01:11 BoogieIcfgContainer [2022-01-19 10:01:11,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 10:01:11,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 10:01:11,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 10:01:11,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 10:01:11,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 10:01:10" (1/3) ... [2022-01-19 10:01:11,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ada8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 10:01:11, skipping insertion in model container [2022-01-19 10:01:11,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 10:01:11" (2/3) ... [2022-01-19 10:01:11,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ada8f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 10:01:11, skipping insertion in model container [2022-01-19 10:01:11,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 10:01:11" (3/3) ... [2022-01-19 10:01:11,794 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2022-01-19 10:01:11,798 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 10:01:11,798 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 10:01:11,799 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 10:01:11,828 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,828 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,828 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,828 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,829 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,829 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,829 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,829 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,830 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,830 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,831 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,831 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,831 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,831 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,832 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,832 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,832 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,832 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,833 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,833 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,833 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,833 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,833 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,834 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,834 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,834 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,835 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,835 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,835 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,835 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,836 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,836 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,836 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,836 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,837 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,837 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,839 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,840 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,840 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,840 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,840 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,842 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,843 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,843 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,843 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,843 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 10:01:11,844 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 10:01:11,902 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 10:01:11,910 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 10:01:11,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 10:01:11,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2022-01-19 10:01:11,988 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-01-19 10:01:11,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 10:01:11,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-01-19 10:01:11,993 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 96 transitions, 202 flow [2022-01-19 10:01:11,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 94 transitions, 194 flow [2022-01-19 10:01:12,027 INFO L129 PetriNetUnfolder]: 7/85 cut-off events. [2022-01-19 10:01:12,028 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 10:01:12,028 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 10:01:12,029 INFO L254 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] [2022-01-19 10:01:12,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 10:01:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 10:01:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1927097680, now seen corresponding path program 1 times [2022-01-19 10:01:12,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 10:01:12,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774842186] [2022-01-19 10:01:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 10:01:12,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 10:01:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 10:01:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:12,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 10:01:12,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774842186] [2022-01-19 10:01:12,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774842186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 10:01:12,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 10:01:12,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 10:01:12,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792253826] [2022-01-19 10:01:12,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 10:01:12,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 10:01:12,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 10:01:12,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 10:01:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 10:01:12,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 96 [2022-01-19 10:01:12,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2022-01-19 10:01:12,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 10:01:12,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 96 [2022-01-19 10:01:12,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 10:01:12,385 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2022-01-19 10:01:12,385 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 10:01:12,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 5/90 useless extension candidates. Maximal degree in co-relation 60. Up to 3 conditions per place. [2022-01-19 10:01:12,387 INFO L132 encePairwiseOnDemand]: 92/96 looper letters, 2 selfloop transitions, 0 changer transitions 0/89 dead transitions. [2022-01-19 10:01:12,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 188 flow [2022-01-19 10:01:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 10:01:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 10:01:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 184 transitions. [2022-01-19 10:01:12,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9583333333333334 [2022-01-19 10:01:12,402 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 184 transitions. [2022-01-19 10:01:12,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 184 transitions. [2022-01-19 10:01:12,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 10:01:12,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 184 transitions. [2022-01-19 10:01:12,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 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) [2022-01-19 10:01:12,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 10:01:12,420 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 10:01:12,422 INFO L186 Difference]: Start difference. First operand has 94 places, 94 transitions, 194 flow. Second operand 2 states and 184 transitions. [2022-01-19 10:01:12,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 188 flow [2022-01-19 10:01:12,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 10:01:12,430 INFO L242 Difference]: Finished difference. Result has 92 places, 89 transitions, 182 flow [2022-01-19 10:01:12,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2022-01-19 10:01:12,434 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2022-01-19 10:01:12,434 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 182 flow [2022-01-19 10:01:12,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 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) [2022-01-19 10:01:12,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 10:01:12,434 INFO L254 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] [2022-01-19 10:01:12,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 10:01:12,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 10:01:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 10:01:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 560415153, now seen corresponding path program 1 times [2022-01-19 10:01:12,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 10:01:12,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130901493] [2022-01-19 10:01:12,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 10:01:12,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 10:01:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 10:01:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:12,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 10:01:12,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130901493] [2022-01-19 10:01:12,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130901493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 10:01:12,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 10:01:12,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 10:01:12,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21957396] [2022-01-19 10:01:12,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 10:01:12,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 10:01:12,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 10:01:12,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 10:01:12,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 10:01:12,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 96 [2022-01-19 10:01:12,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-01-19 10:01:12,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 10:01:12,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 96 [2022-01-19 10:01:12,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 10:01:12,575 INFO L129 PetriNetUnfolder]: 3/95 cut-off events. [2022-01-19 10:01:12,576 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 10:01:12,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 95 events. 3/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 60 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2022-01-19 10:01:12,577 INFO L132 encePairwiseOnDemand]: 93/96 looper letters, 9 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2022-01-19 10:01:12,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 92 transitions, 210 flow [2022-01-19 10:01:12,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 10:01:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 10:01:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2022-01-19 10:01:12,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-01-19 10:01:12,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2022-01-19 10:01:12,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2022-01-19 10:01:12,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 10:01:12,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2022-01-19 10:01:12,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-01-19 10:01:12,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2022-01-19 10:01:12,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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) [2022-01-19 10:01:12,583 INFO L186 Difference]: Start difference. First operand has 92 places, 89 transitions, 182 flow. Second operand 3 states and 261 transitions. [2022-01-19 10:01:12,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 92 transitions, 210 flow [2022-01-19 10:01:12,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 92 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 10:01:12,586 INFO L242 Difference]: Finished difference. Result has 95 places, 90 transitions, 194 flow [2022-01-19 10:01:12,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2022-01-19 10:01:12,587 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-01-19 10:01:12,587 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 194 flow [2022-01-19 10:01:12,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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) [2022-01-19 10:01:12,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 10:01:12,587 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 10:01:12,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 10:01:12,588 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 10:01:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 10:01:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash -951035470, now seen corresponding path program 1 times [2022-01-19 10:01:12,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 10:01:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892437117] [2022-01-19 10:01:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 10:01:12,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 10:01:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 10:01:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:12,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 10:01:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892437117] [2022-01-19 10:01:12,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892437117] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 10:01:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204705465] [2022-01-19 10:01:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 10:01:12,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 10:01:12,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 10:01:12,683 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) [2022-01-19 10:01:12,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 10:01:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 10:01:12,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-19 10:01:12,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 10:01:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:12,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 10:01:13,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:13,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204705465] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 10:01:13,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 10:01:13,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-19 10:01:13,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775693320] [2022-01-19 10:01:13,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 10:01:13,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 10:01:13,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 10:01:13,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 10:01:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-01-19 10:01:13,030 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 10:01:13,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 10:01:13,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 10:01:13,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 10:01:13,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 10:01:13,105 INFO L129 PetriNetUnfolder]: 3/104 cut-off events. [2022-01-19 10:01:13,105 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 10:01:13,106 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 104 events. 3/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 133. Up to 6 conditions per place. [2022-01-19 10:01:13,107 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 10 selfloop transitions, 9 changer transitions 0/98 dead transitions. [2022-01-19 10:01:13,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 250 flow [2022-01-19 10:01:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 10:01:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 10:01:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 750 transitions. [2022-01-19 10:01:13,110 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8680555555555556 [2022-01-19 10:01:13,110 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 750 transitions. [2022-01-19 10:01:13,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 750 transitions. [2022-01-19 10:01:13,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 10:01:13,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 750 transitions. [2022-01-19 10:01:13,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.33333333333333) internal successors, (750), 9 states have internal predecessors, (750), 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) [2022-01-19 10:01:13,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-01-19 10:01:13,116 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 96.0) internal successors, (960), 10 states have internal predecessors, (960), 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) [2022-01-19 10:01:13,117 INFO L186 Difference]: Start difference. First operand has 95 places, 90 transitions, 194 flow. Second operand 9 states and 750 transitions. [2022-01-19 10:01:13,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 250 flow [2022-01-19 10:01:13,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 10:01:13,119 INFO L242 Difference]: Finished difference. Result has 105 places, 96 transitions, 242 flow [2022-01-19 10:01:13,120 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2022-01-19 10:01:13,120 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2022-01-19 10:01:13,121 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 242 flow [2022-01-19 10:01:13,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2022-01-19 10:01:13,121 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 10:01:13,122 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 10:01:13,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 10:01:13,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 10:01:13,339 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 10:01:13,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 10:01:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1666707666, now seen corresponding path program 2 times [2022-01-19 10:01:13,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 10:01:13,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243594624] [2022-01-19 10:01:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 10:01:13,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 10:01:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 10:01:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:13,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 10:01:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243594624] [2022-01-19 10:01:13,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243594624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 10:01:13,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677511425] [2022-01-19 10:01:13,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 10:01:13,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 10:01:13,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 10:01:13,496 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) [2022-01-19 10:01:13,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 10:01:13,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 10:01:13,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 10:01:13,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 10:01:13,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 10:01:13,777 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:13,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 10:01:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:13,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677511425] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 10:01:13,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 10:01:13,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-19 10:01:13,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875261180] [2022-01-19 10:01:13,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 10:01:13,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 10:01:13,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 10:01:13,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 10:01:13,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-01-19 10:01:13,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 10:01:13,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 242 flow. Second operand has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 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) [2022-01-19 10:01:13,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 10:01:13,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 10:01:13,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 10:01:14,162 INFO L129 PetriNetUnfolder]: 3/132 cut-off events. [2022-01-19 10:01:14,163 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-01-19 10:01:14,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 132 events. 3/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 4/133 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2022-01-19 10:01:14,166 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 14 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2022-01-19 10:01:14,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 114 transitions, 408 flow [2022-01-19 10:01:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 10:01:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 10:01:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1740 transitions. [2022-01-19 10:01:14,171 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2022-01-19 10:01:14,171 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1740 transitions. [2022-01-19 10:01:14,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1740 transitions. [2022-01-19 10:01:14,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 10:01:14,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1740 transitions. [2022-01-19 10:01:14,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.85714285714286) internal successors, (1740), 21 states have internal predecessors, (1740), 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) [2022-01-19 10:01:14,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 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) [2022-01-19 10:01:14,181 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 96.0) internal successors, (2112), 22 states have internal predecessors, (2112), 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) [2022-01-19 10:01:14,181 INFO L186 Difference]: Start difference. First operand has 105 places, 96 transitions, 242 flow. Second operand 21 states and 1740 transitions. [2022-01-19 10:01:14,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 114 transitions, 408 flow [2022-01-19 10:01:14,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 114 transitions, 394 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 10:01:14,189 INFO L242 Difference]: Finished difference. Result has 129 places, 109 transitions, 366 flow [2022-01-19 10:01:14,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=366, PETRI_PLACES=129, PETRI_TRANSITIONS=109} [2022-01-19 10:01:14,191 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 35 predicate places. [2022-01-19 10:01:14,191 INFO L470 AbstractCegarLoop]: Abstraction has has 129 places, 109 transitions, 366 flow [2022-01-19 10:01:14,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 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) [2022-01-19 10:01:14,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 10:01:14,193 INFO L254 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 10:01:14,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 10:01:14,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-19 10:01:14,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 10:01:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 10:01:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1283180782, now seen corresponding path program 3 times [2022-01-19 10:01:14,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 10:01:14,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647707348] [2022-01-19 10:01:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 10:01:14,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 10:01:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 10:01:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:14,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 10:01:14,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647707348] [2022-01-19 10:01:14,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647707348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 10:01:14,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424048713] [2022-01-19 10:01:14,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 10:01:14,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 10:01:14,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 10:01:14,612 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) [2022-01-19 10:01:14,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 10:01:14,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-19 10:01:14,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 10:01:14,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 10:01:14,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 10:01:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:14,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 10:01:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:15,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424048713] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 10:01:15,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 10:01:15,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2022-01-19 10:01:15,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509140465] [2022-01-19 10:01:15,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 10:01:15,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-19 10:01:15,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 10:01:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-19 10:01:15,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2022-01-19 10:01:15,236 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 96 [2022-01-19 10:01:15,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 109 transitions, 366 flow. Second operand has 31 states, 31 states have (on average 83.06451612903226) internal successors, (2575), 31 states have internal predecessors, (2575), 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) [2022-01-19 10:01:15,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 10:01:15,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 96 [2022-01-19 10:01:15,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 10:01:15,723 INFO L129 PetriNetUnfolder]: 3/181 cut-off events. [2022-01-19 10:01:15,723 INFO L130 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-01-19 10:01:15,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 181 events. 3/181 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 7/185 useless extension candidates. Maximal degree in co-relation 415. Up to 25 conditions per place. [2022-01-19 10:01:15,727 INFO L132 encePairwiseOnDemand]: 90/96 looper letters, 21 selfloop transitions, 42 changer transitions 0/142 dead transitions. [2022-01-19 10:01:15,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 142 transitions, 748 flow [2022-01-19 10:01:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 10:01:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 10:01:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3472 transitions. [2022-01-19 10:01:15,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2022-01-19 10:01:15,737 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 3472 transitions. [2022-01-19 10:01:15,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 3472 transitions. [2022-01-19 10:01:15,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 10:01:15,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 3472 transitions. [2022-01-19 10:01:15,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 82.66666666666667) internal successors, (3472), 42 states have internal predecessors, (3472), 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) [2022-01-19 10:01:15,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 96.0) internal successors, (4128), 43 states have internal predecessors, (4128), 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) [2022-01-19 10:01:15,765 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 96.0) internal successors, (4128), 43 states have internal predecessors, (4128), 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) [2022-01-19 10:01:15,766 INFO L186 Difference]: Start difference. First operand has 129 places, 109 transitions, 366 flow. Second operand 42 states and 3472 transitions. [2022-01-19 10:01:15,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 142 transitions, 748 flow [2022-01-19 10:01:15,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 142 transitions, 710 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-01-19 10:01:15,777 INFO L242 Difference]: Finished difference. Result has 172 places, 131 transitions, 614 flow [2022-01-19 10:01:15,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=614, PETRI_PLACES=172, PETRI_TRANSITIONS=131} [2022-01-19 10:01:15,780 INFO L334 CegarLoopForPetriNet]: 94 programPoint places, 78 predicate places. [2022-01-19 10:01:15,780 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 131 transitions, 614 flow [2022-01-19 10:01:15,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 83.06451612903226) internal successors, (2575), 31 states have internal predecessors, (2575), 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) [2022-01-19 10:01:15,782 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 10:01:15,782 INFO L254 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 10:01:15,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 10:01:16,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 10:01:16,007 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 10:01:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 10:01:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2049692625, now seen corresponding path program 4 times [2022-01-19 10:01:16,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 10:01:16,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243239118] [2022-01-19 10:01:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 10:01:16,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 10:01:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 10:01:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:17,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 10:01:17,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243239118] [2022-01-19 10:01:17,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243239118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 10:01:17,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544091547] [2022-01-19 10:01:17,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 10:01:17,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 10:01:17,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 10:01:17,527 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) [2022-01-19 10:01:17,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 10:01:17,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 10:01:17,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 10:01:17,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-19 10:01:17,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 10:01:21,144 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:01:21,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 10:11:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 649 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 10:11:07,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544091547] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 10:11:07,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 10:11:07,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 139 [2022-01-19 10:11:07,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082818030] [2022-01-19 10:11:07,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 10:11:07,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2022-01-19 10:11:07,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 10:11:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2022-01-19 10:11:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=17809, Unknown=152, NotChecked=0, Total=19182 [2022-01-19 10:11:07,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 96 [2022-01-19 10:11:07,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 131 transitions, 614 flow. Second operand has 139 states, 139 states have (on average 69.23741007194245) internal successors, (9624), 139 states have internal predecessors, (9624), 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) [2022-01-19 10:11:07,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 10:11:07,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 96 [2022-01-19 10:11:07,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 10:15:34,404 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 10:15:34,405 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 [2022-01-19 10:15:35,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 10:15:35,615 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-01-19 10:15:35,705 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 137 [2022-01-19 10:15:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 10:15:35,707 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 10:15:35,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 10:15:35,707 WARN L594 AbstractCegarLoop]: Verification canceled: while executing Executor. [2022-01-19 10:15:35,708 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 10:15:35,708 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 10:15:35,712 INFO L732 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-01-19 10:15:35,714 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 10:15:35,714 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 10:15:35,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 10:15:35 BasicIcfg [2022-01-19 10:15:35,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 10:15:35,717 INFO L158 Benchmark]: Toolchain (without parser) took 864810.46ms. Allocated memory was 375.4MB in the beginning and 740.3MB in the end (delta: 364.9MB). Free memory was 318.8MB in the beginning and 436.3MB in the end (delta: -117.5MB). Peak memory consumption was 248.5MB. Max. memory is 16.0GB. [2022-01-19 10:15:35,717 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory is still 336.9MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 10:15:35,717 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.69ms. Allocated memory was 375.4MB in the beginning and 616.6MB in the end (delta: 241.2MB). Free memory was 318.6MB in the beginning and 579.4MB in the end (delta: -260.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.0GB. [2022-01-19 10:15:35,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.29ms. Allocated memory is still 616.6MB. Free memory was 579.2MB in the beginning and 577.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 10:15:35,718 INFO L158 Benchmark]: Boogie Preprocessor took 25.04ms. Allocated memory is still 616.6MB. Free memory was 577.3MB in the beginning and 575.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 10:15:35,718 INFO L158 Benchmark]: RCFGBuilder took 381.69ms. Allocated memory is still 616.6MB. Free memory was 575.2MB in the beginning and 562.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 10:15:35,719 INFO L158 Benchmark]: TraceAbstraction took 863926.43ms. Allocated memory was 616.6MB in the beginning and 740.3MB in the end (delta: 123.7MB). Free memory was 561.5MB in the beginning and 436.3MB in the end (delta: 125.2MB). Peak memory consumption was 250.3MB. Max. memory is 16.0GB. [2022-01-19 10:15:35,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 375.4MB. Free memory is still 336.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 418.69ms. Allocated memory was 375.4MB in the beginning and 616.6MB in the end (delta: 241.2MB). Free memory was 318.6MB in the beginning and 579.4MB in the end (delta: -260.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.29ms. Allocated memory is still 616.6MB. Free memory was 579.2MB in the beginning and 577.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.04ms. Allocated memory is still 616.6MB. Free memory was 577.3MB in the beginning and 575.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 381.69ms. Allocated memory is still 616.6MB. Free memory was 575.2MB in the beginning and 562.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 863926.43ms. Allocated memory was 616.6MB in the beginning and 740.3MB in the end (delta: 123.7MB). Free memory was 561.5MB in the beginning and 436.3MB in the end (delta: 125.2MB). Peak memory consumption was 250.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 726]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 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: 863.8s, OverallIterations: 6, TraceHistogramMax: 14, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 269.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 248 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 232 IncrementalHoareTripleChecker+Unchecked, 427 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 611 IncrementalHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 27 mSDtfsCounter, 611 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 896 GetRequests, 657 SyntacticMatches, 3 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6412 ImplicationChecksByTransitivity, 692.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=5, InterpolantAutomatonStates: 77, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 593.2s InterpolantComputationTime, 880 NumberOfCodeBlocks, 863 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1253 ConstructedInterpolants, 88 QuantifiedInterpolants, 18441 SizeOfPredicates, 68 NumberOfNonLiveVariables, 841 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 486/2490 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