/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:26:00,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:26:00,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:26:00,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 19:26:00,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 19:26:00,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 19:26:00,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 19:26:00,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 19:26:00,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 19:26:00,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 19:26:00,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 19:26:00,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 19:26:00,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:26:00,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:26:00,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:26:00,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:26:00,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:26:00,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:26:00,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:26:00,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:26:00,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:26:00,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:26:00,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:26:00,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:26:00,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 19:26:00,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 19:26:00,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 19:26:00,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 19:26:00,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 19:26:00,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 19:26:00,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 19:26:00,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 19:26:00,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 19:26:00,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 19:26:00,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 19:26:00,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 19:26:00,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 19:26:00,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 19:26:00,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:26:00,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:26:00,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:26:00,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 19:26:00,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:26:00,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:26:00,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:26:00,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:26:00,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:26:00,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:26:00,491 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:26:00,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:26:00,491 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:26:00,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:26:00,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:26:00,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:26:00,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:26:00,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:26:00,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:26:00,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:26:00,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:26:00,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:26:00,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:26:00,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:26:00,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:26:00,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:26:00,493 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:26:00,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:26:00,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:26:00,494 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:26:00,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:26:00,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:26:00,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:26:00,676 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:26:00,677 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:26:00,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-03-15 19:26:00,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896e7dfbd/20900ef1e766413b82b9658aa5d5130a/FLAG84e080e24 [2022-03-15 19:26:01,083 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:26:01,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2022-03-15 19:26:01,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896e7dfbd/20900ef1e766413b82b9658aa5d5130a/FLAG84e080e24 [2022-03-15 19:26:01,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/896e7dfbd/20900ef1e766413b82b9658aa5d5130a [2022-03-15 19:26:01,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:26:01,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:26:01,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:26:01,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:26:01,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:26:01,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9299a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01, skipping insertion in model container [2022-03-15 19:26:01,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:26:01,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:26:01,679 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-03-15 19:26:01,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:26:01,690 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:26:01,712 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2486,2499] [2022-03-15 19:26:01,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:26:01,725 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:26:01,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01 WrapperNode [2022-03-15 19:26:01,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:26:01,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:26:01,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:26:01,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:26:01,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,749 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-03-15 19:26:01,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:26:01,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:26:01,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:26:01,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:26:01,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:26:01,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:26:01,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:26:01,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:26:01,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (1/1) ... [2022-03-15 19:26:01,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:26:01,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:26:01,804 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) [2022-03-15 19:26:01,822 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 [2022-03-15 19:26:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:26:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:26:01,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:26:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:26:01,828 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 19:26:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:26:01,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:26:01,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:26:01,830 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 19:26:01,901 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:26:01,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:26:02,057 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:26:02,096 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:26:02,096 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 19:26:02,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:26:02 BoogieIcfgContainer [2022-03-15 19:26:02,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:26:02,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:26:02,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:26:02,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:26:02,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:26:01" (1/3) ... [2022-03-15 19:26:02,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1f1502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:26:02, skipping insertion in model container [2022-03-15 19:26:02,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:26:01" (2/3) ... [2022-03-15 19:26:02,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1f1502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:26:02, skipping insertion in model container [2022-03-15 19:26:02,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:26:02" (3/3) ... [2022-03-15 19:26:02,103 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2022-03-15 19:26:02,106 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:26:02,106 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:26:02,106 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:26:02,106 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:26:02,140 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,141 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,141 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,141 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,141 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,141 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,142 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,142 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,143 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,143 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,143 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,143 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,143 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,144 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,144 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,144 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,145 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,145 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,145 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,145 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,145 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,145 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,146 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,146 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,146 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,146 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,146 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,147 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,148 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,148 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,149 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,149 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,149 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,150 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,150 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,150 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,151 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,151 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,151 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,151 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,153 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,154 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,154 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,155 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,155 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,155 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,156 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,156 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:26:02,160 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 19:26:02,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:26:02,191 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 19:26:02,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 19:26:02,201 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:26:02,206 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 149 transitions, 322 flow [2022-03-15 19:26:02,208 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 149 transitions, 322 flow [2022-03-15 19:26:02,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 149 places, 149 transitions, 322 flow [2022-03-15 19:26:02,249 INFO L129 PetriNetUnfolder]: 10/146 cut-off events. [2022-03-15 19:26:02,249 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-03-15 19:26:02,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 146 events. 10/146 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-03-15 19:26:02,254 INFO L116 LiptonReduction]: Number of co-enabled transitions 914 [2022-03-15 19:26:06,076 INFO L131 LiptonReduction]: Checked pairs total: 1303 [2022-03-15 19:26:06,076 INFO L133 LiptonReduction]: Total number of compositions: 146 [2022-03-15 19:26:06,084 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2022-03-15 19:26:06,111 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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) [2022-03-15 19:26:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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) [2022-03-15 19:26:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 19:26:06,123 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:26:06,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:26:06,124 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:26:06,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:26:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash -327305947, now seen corresponding path program 1 times [2022-03-15 19:26:06,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:26:06,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774027654] [2022-03-15 19:26:06,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:26:06,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:26:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:26:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:26:06,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:26:06,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774027654] [2022-03-15 19:26:06,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774027654] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:26:06,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:26:06,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 19:26:06,395 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [420384188] [2022-03-15 19:26:06,396 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:26:06,401 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:26:06,421 INFO L252 McrAutomatonBuilder]: Finished intersection with 81 states and 173 transitions. [2022-03-15 19:26:06,421 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:26:06,798 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [318#(< thread2Thread1of1ForFork2_~i~1 ~N~0)] [2022-03-15 19:26:06,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 19:26:06,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:26:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 19:26:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:26:06,817 INFO L87 Difference]: Start difference. First operand has 81 states, 80 states have (on average 2.7) internal successors, (216), 80 states have internal predecessors, (216), 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) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:26:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:26:06,873 INFO L93 Difference]: Finished difference Result 103 states and 280 transitions. [2022-03-15 19:26:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:26:06,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 19:26:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:26:06,882 INFO L225 Difference]: With dead ends: 103 [2022-03-15 19:26:06,882 INFO L226 Difference]: Without dead ends: 103 [2022-03-15 19:26:06,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:26:06,885 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 16 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:26:06,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 5 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:26:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-03-15 19:26:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-03-15 19:26:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 2.7450980392156863) internal successors, (280), 102 states have internal predecessors, (280), 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) [2022-03-15 19:26:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 280 transitions. [2022-03-15 19:26:06,927 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 280 transitions. Word has length 19 [2022-03-15 19:26:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:26:06,927 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 280 transitions. [2022-03-15 19:26:06,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:26:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 280 transitions. [2022-03-15 19:26:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:26:06,930 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:26:06,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:26:06,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:26:06,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:26:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:26:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1318510993, now seen corresponding path program 1 times [2022-03-15 19:26:06,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:26:06,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226138636] [2022-03-15 19:26:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:26:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:26:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:26:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:26:07,019 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:26:07,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226138636] [2022-03-15 19:26:07,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226138636] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:26:07,019 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:26:07,019 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 19:26:07,019 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1678377402] [2022-03-15 19:26:07,019 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:26:07,032 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:26:07,043 INFO L252 McrAutomatonBuilder]: Finished intersection with 81 states and 165 transitions. [2022-03-15 19:26:07,043 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:26:07,385 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [633#(< thread2Thread1of1ForFork2_~i~1 ~N~0), 634#(or (<= ~N~0 thread2Thread1of1ForFork2_~i~1) (< (+ thread2Thread1of1ForFork2_~i~1 1) ~N~0)), 635#(or (<= ~N~0 0) (< 1 ~N~0))] [2022-03-15 19:26:07,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:26:07,386 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:26:07,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:26:07,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 19:26:07,386 INFO L87 Difference]: Start difference. First operand 103 states and 280 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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) [2022-03-15 19:26:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:26:07,477 INFO L93 Difference]: Finished difference Result 104 states and 281 transitions. [2022-03-15 19:26:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:26:07,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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) Word has length 20 [2022-03-15 19:26:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:26:07,478 INFO L225 Difference]: With dead ends: 104 [2022-03-15 19:26:07,478 INFO L226 Difference]: Without dead ends: 104 [2022-03-15 19:26:07,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 19:26:07,479 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:26:07,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:26:07,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-03-15 19:26:07,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-03-15 19:26:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.7281553398058254) internal successors, (281), 103 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:26:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 281 transitions. [2022-03-15 19:26:07,484 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 281 transitions. Word has length 20 [2022-03-15 19:26:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:26:07,484 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 281 transitions. [2022-03-15 19:26:07,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 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) [2022-03-15 19:26:07,484 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 281 transitions. [2022-03-15 19:26:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 19:26:07,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:26:07,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:26:07,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 19:26:07,485 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:26:07,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:26:07,486 INFO L85 PathProgramCache]: Analyzing trace with hash 781186670, now seen corresponding path program 1 times [2022-03-15 19:26:07,486 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:26:07,487 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335561932] [2022-03-15 19:26:07,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:26:07,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:26:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:26:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:26:07,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:26:07,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335561932] [2022-03-15 19:26:07,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335561932] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:26:07,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121630081] [2022-03-15 19:26:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:26:07,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:26:07,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:26:07,532 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) [2022-03-15 19:26:07,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 19:26:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:26:07,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 19:26:07,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:26:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:26:07,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:26:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:26:07,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121630081] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 19:26:07,722 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 19:26:07,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-03-15 19:26:07,722 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1952599083] [2022-03-15 19:26:07,722 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:26:07,724 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:26:07,745 INFO L252 McrAutomatonBuilder]: Finished intersection with 82 states and 166 transitions. [2022-03-15 19:26:07,745 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:26:08,076 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:26:08,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 19:26:08,077 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:26:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 19:26:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-15 19:26:08,077 INFO L87 Difference]: Start difference. First operand 104 states and 281 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2022-03-15 19:26:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:26:08,128 INFO L93 Difference]: Finished difference Result 130 states and 357 transitions. [2022-03-15 19:26:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 19:26:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) Word has length 21 [2022-03-15 19:26:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:26:08,130 INFO L225 Difference]: With dead ends: 130 [2022-03-15 19:26:08,130 INFO L226 Difference]: Without dead ends: 130 [2022-03-15 19:26:08,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-15 19:26:08,132 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:26:08,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 4 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:26:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-03-15 19:26:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-03-15 19:26:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.7674418604651163) internal successors, (357), 129 states have internal predecessors, (357), 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) [2022-03-15 19:26:08,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 357 transitions. [2022-03-15 19:26:08,150 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 357 transitions. Word has length 21 [2022-03-15 19:26:08,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:26:08,151 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 357 transitions. [2022-03-15 19:26:08,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 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) [2022-03-15 19:26:08,151 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 357 transitions. [2022-03-15 19:26:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:26:08,154 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:26:08,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:26:08,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-15 19:26:08,354 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 [2022-03-15 19:26:08,355 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:26:08,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:26:08,355 INFO L85 PathProgramCache]: Analyzing trace with hash -299496514, now seen corresponding path program 1 times [2022-03-15 19:26:08,358 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:26:08,358 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740879872] [2022-03-15 19:26:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:26:08,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:26:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:26:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:26:08,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:26:08,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740879872] [2022-03-15 19:26:08,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740879872] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:26:08,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430009447] [2022-03-15 19:26:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:26:08,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:26:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:26:08,518 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) [2022-03-15 19:26:08,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 19:26:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:26:08,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 19:26:08,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:26:08,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 19:26:08,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:26:08,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-03-15 19:26:08,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:26:08,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-03-15 19:26:08,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:26:08,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-03-15 19:26:08,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 19:26:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:26:08,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:26:09,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:26:09,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430009447] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 19:26:09,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 19:26:09,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 9] total 18 [2022-03-15 19:26:09,150 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1295215470] [2022-03-15 19:26:09,150 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:26:09,152 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:26:09,163 INFO L252 McrAutomatonBuilder]: Finished intersection with 86 states and 174 transitions. [2022-03-15 19:26:09,164 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:26:10,672 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [1616#(and (or (< ~max~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset)) (<= (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~max~0) (not (< (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~min~0))) (or (< (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~min~0) (not (< ~max~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset))) (<= ~min~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset))) (or (<= (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) (select (select |#memory_int| ~A~0.base) ~A~0.offset)) (not (< (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~min~0)) (not (< ~max~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset)))) (or (< ~max~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~min~0) (<= ~min~0 ~max~0))), 1615#(and (or (<= (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~max~0) (not (< (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~min~0))) (or (< (select (select |#memory_int| ~A~0.base) (+ ~A~0.offset (* thread1Thread1of1ForFork1_~i~0 4))) ~min~0) (<= ~min~0 ~max~0))), 1617#(and (or (<= ~min~0 ~max~0) (< (select (select |#memory_int| ~A~0.base) ~A~0.offset) ~min~0)) (or (not (< (select (select |#memory_int| ~A~0.base) ~A~0.offset) ~min~0)) (<= (select (select |#memory_int| ~A~0.base) ~A~0.offset) ~max~0))), 1614#(and (or (< ~max~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset)) (<= ~min~0 ~max~0)) (or (not (< ~max~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset))) (<= ~min~0 (select (select |#memory_int| ~A~0.base) ~A~0.offset))))] [2022-03-15 19:26:10,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:26:10,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:26:10,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:26:10,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=370, Unknown=2, NotChecked=0, Total=506 [2022-03-15 19:26:10,673 INFO L87 Difference]: Start difference. First operand 130 states and 357 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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) [2022-03-15 19:26:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:26:10,715 INFO L93 Difference]: Finished difference Result 129 states and 356 transitions. [2022-03-15 19:26:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:26:10,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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) Word has length 22 [2022-03-15 19:26:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:26:10,716 INFO L225 Difference]: With dead ends: 129 [2022-03-15 19:26:10,716 INFO L226 Difference]: Without dead ends: 0 [2022-03-15 19:26:10,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 82 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=403, Unknown=2, NotChecked=0, Total=552 [2022-03-15 19:26:10,716 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 52 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:26:10,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 6 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 45 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-03-15 19:26:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-15 19:26:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-15 19:26:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-03-15 19:26:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-15 19:26:10,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-03-15 19:26:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:26:10,717 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-15 19:26:10,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 12 states have internal predecessors, (63), 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) [2022-03-15 19:26:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-15 19:26:10,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-15 19:26:10,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-03-15 19:26:10,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 19:26:10,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 19:26:10,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 19:26:10,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 19:26:10,927 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 [2022-03-15 19:26:10,929 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-03-15 19:26:10,930 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 19:26:10,930 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 19:26:10,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 07:26:10 BasicIcfg [2022-03-15 19:26:10,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 19:26:10,932 INFO L158 Benchmark]: Toolchain (without parser) took 9412.95ms. Allocated memory was 181.4MB in the beginning and 262.1MB in the end (delta: 80.7MB). Free memory was 126.4MB in the beginning and 132.3MB in the end (delta: -6.0MB). Peak memory consumption was 75.8MB. Max. memory is 8.0GB. [2022-03-15 19:26:10,932 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 181.4MB. Free memory was 142.5MB in the beginning and 142.3MB in the end (delta: 115.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 19:26:10,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.60ms. Allocated memory is still 181.4MB. Free memory was 126.2MB in the beginning and 152.0MB in the end (delta: -25.9MB). Peak memory consumption was 6.4MB. Max. memory is 8.0GB. [2022-03-15 19:26:10,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.77ms. Allocated memory is still 181.4MB. Free memory was 152.0MB in the beginning and 150.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 19:26:10,933 INFO L158 Benchmark]: Boogie Preprocessor took 30.84ms. Allocated memory is still 181.4MB. Free memory was 150.4MB in the beginning and 148.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 19:26:10,933 INFO L158 Benchmark]: RCFGBuilder took 316.61ms. Allocated memory is still 181.4MB. Free memory was 148.9MB in the beginning and 131.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-03-15 19:26:10,933 INFO L158 Benchmark]: TraceAbstraction took 8833.30ms. Allocated memory was 181.4MB in the beginning and 262.1MB in the end (delta: 80.7MB). Free memory was 131.0MB in the beginning and 132.3MB in the end (delta: -1.3MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. [2022-03-15 19:26:10,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 181.4MB. Free memory was 142.5MB in the beginning and 142.3MB in the end (delta: 115.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 205.60ms. Allocated memory is still 181.4MB. Free memory was 126.2MB in the beginning and 152.0MB in the end (delta: -25.9MB). Peak memory consumption was 6.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.77ms. Allocated memory is still 181.4MB. Free memory was 152.0MB in the beginning and 150.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.84ms. Allocated memory is still 181.4MB. Free memory was 150.4MB in the beginning and 148.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 316.61ms. Allocated memory is still 181.4MB. Free memory was 148.9MB in the beginning and 131.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 8833.30ms. Allocated memory was 181.4MB in the beginning and 262.1MB in the end (delta: 80.7MB). Free memory was 131.0MB in the beginning and 132.3MB in the end (delta: -1.3MB). Peak memory consumption was 79.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 149 PlacesBefore, 33 PlacesAfterwards, 149 TransitionsBefore, 26 TransitionsAfterwards, 914 CoEnabledTransitionPairs, 8 FixpointIterations, 97 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 146 TotalNumberOfCompositions, 1303 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1155, positive: 1112, positive conditional: 0, positive unconditional: 1112, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 500, positive: 489, positive conditional: 0, positive unconditional: 489, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1155, positive: 623, positive conditional: 0, positive unconditional: 623, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 500, unknown conditional: 0, unknown unconditional: 500] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3 - 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 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 165 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 8.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 174 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 351 IncrementalHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 13 mSDtfsCounter, 351 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 347 GetRequests, 291 SyntacticMatches, 17 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 160 ConstructedInterpolants, 1 QuantifiedInterpolants, 1148 SizeOfPredicates, 19 NumberOfNonLiveVariables, 438 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 10/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-15 19:26:10,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...