/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-difference-det.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:13:27,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:13:27,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:13:27,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 19:13:27,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 19:13:27,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 19:13:27,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 19:13:27,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 19:13:27,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 19:13:27,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 19:13:27,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 19:13:27,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 19:13:27,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:13:27,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:13:27,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:13:27,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:13:27,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:13:27,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:13:27,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:13:27,968 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:13:27,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:13:27,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:13:27,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:13:27,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:13:27,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 19:13:27,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 19:13:27,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 19:13:27,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 19:13:27,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 19:13:27,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-15 19:13:28,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:13:28,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:13:28,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:13:28,006 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 19:13:28,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:13:28,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:13:28,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:13:28,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:13:28,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:13:28,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:13:28,037 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:13:28,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:13:28,037 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:13:28,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:13:28,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:13:28,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:13:28,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:13:28,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:13:28,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:13:28,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:13:28,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:13:28,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:13:28,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:13:28,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:13:28,040 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:13:28,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:13:28,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:13:28,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:13:28,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:13:28,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:13:28,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:13:28,278 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:13:28,279 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:13:28,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2022-03-15 19:13:28,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d718537/452f40d111b84aef8bd59d4499922b2a/FLAGc1152e566 [2022-03-15 19:13:28,680 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:13:28,680 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-difference-det.wvr.c [2022-03-15 19:13:28,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d718537/452f40d111b84aef8bd59d4499922b2a/FLAGc1152e566 [2022-03-15 19:13:28,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d718537/452f40d111b84aef8bd59d4499922b2a [2022-03-15 19:13:28,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:13:28,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:13:28,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:13:28,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:13:28,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:13:28,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c00003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28, skipping insertion in model container [2022-03-15 19:13:28,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:13:28,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:13:28,881 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-difference-det.wvr.c[2507,2520] [2022-03-15 19:13:28,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:13:28,891 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:13:28,914 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-difference-det.wvr.c[2507,2520] [2022-03-15 19:13:28,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:13:28,924 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:13:28,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28 WrapperNode [2022-03-15 19:13:28,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:13:28,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:13:28,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:13:28,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:13:28,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,962 INFO L137 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2022-03-15 19:13:28,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:13:28,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:13:28,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:13:28,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:13:28,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:13:28,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:13:28,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:13:28,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:13:28,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (1/1) ... [2022-03-15 19:13:28,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:13:29,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:13:29,027 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 19:13:29,057 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 19:13:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:13:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:13:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:13:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:13:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:13:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 19:13:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 19:13:29,068 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-03-15 19:13:29,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-03-15 19:13:29,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:13:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:13:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:13:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 19:13:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 19:13:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:13:29,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:13:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:13:29,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:13:29,072 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 19:13:29,130 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:13:29,131 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:13:29,271 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:13:29,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:13:29,319 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-15 19:13:29,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:13:29 BoogieIcfgContainer [2022-03-15 19:13:29,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:13:29,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:13:29,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:13:29,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:13:29,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:13:28" (1/3) ... [2022-03-15 19:13:29,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e30d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:13:29, skipping insertion in model container [2022-03-15 19:13:29,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:13:28" (2/3) ... [2022-03-15 19:13:29,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e30d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:13:29, skipping insertion in model container [2022-03-15 19:13:29,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:13:29" (3/3) ... [2022-03-15 19:13:29,340 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2022-03-15 19:13:29,344 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:13:29,345 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:13:29,345 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:13:29,345 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:13:29,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,416 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,417 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,417 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,418 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,418 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,418 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,419 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,419 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,419 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,420 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,421 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,422 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,423 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,424 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,424 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,424 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,424 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,425 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,425 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,425 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,425 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,425 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,426 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,426 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,426 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,427 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,427 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,427 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,436 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,436 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,436 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,436 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,437 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,437 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,437 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,437 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,437 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,438 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,439 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,439 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,439 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,439 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,439 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,439 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,440 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,440 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,440 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,440 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,440 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,442 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,443 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,444 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,444 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,445 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,445 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_~i~3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,446 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,447 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:13:29,451 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-03-15 19:13:29,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:13:29,494 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 19:13:29,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-03-15 19:13:29,509 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:13:29,514 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 128 transitions, 288 flow [2022-03-15 19:13:29,516 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 128 transitions, 288 flow [2022-03-15 19:13:29,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 128 transitions, 288 flow [2022-03-15 19:13:29,572 INFO L129 PetriNetUnfolder]: 9/124 cut-off events. [2022-03-15 19:13:29,572 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-03-15 19:13:29,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 9/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 99 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-03-15 19:13:29,580 INFO L116 LiptonReduction]: Number of co-enabled transitions 2520 [2022-03-15 19:13:32,413 INFO L131 LiptonReduction]: Checked pairs total: 2746 [2022-03-15 19:13:32,413 INFO L133 LiptonReduction]: Total number of compositions: 102 [2022-03-15 19:13:32,418 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 34 transitions, 100 flow [2022-03-15 19:13:32,455 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 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 19:13:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 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 19:13:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 19:13:32,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:13:32,466 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, 1, 1, 1] [2022-03-15 19:13:32,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:13:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:13:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash -767135940, now seen corresponding path program 1 times [2022-03-15 19:13:32,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:13:32,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501555682] [2022-03-15 19:13:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:13:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:32,728 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 19:13:32,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:13:32,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501555682] [2022-03-15 19:13:32,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501555682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:13:32,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:13:32,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 19:13:32,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1809536560] [2022-03-15 19:13:32,732 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:32,737 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:32,812 INFO L252 McrAutomatonBuilder]: Finished intersection with 322 states and 945 transitions. [2022-03-15 19:13:32,813 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:13:34,914 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:13:34,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 19:13:34,915 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:13:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 19:13:34,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 19:13:34,930 INFO L87 Difference]: Start difference. First operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 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 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 19:13:34,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:13:34,978 INFO L93 Difference]: Finished difference Result 633 states and 2564 transitions. [2022-03-15 19:13:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 19:13:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2022-03-15 19:13:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:13:34,989 INFO L225 Difference]: With dead ends: 633 [2022-03-15 19:13:34,990 INFO L226 Difference]: Without dead ends: 624 [2022-03-15 19:13:34,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 19:13:34,992 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:13:34,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:13:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-03-15 19:13:35,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2022-03-15 19:13:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 4.070626003210273) internal successors, (2536), 623 states have internal predecessors, (2536), 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 19:13:35,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2536 transitions. [2022-03-15 19:13:35,043 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2536 transitions. Word has length 25 [2022-03-15 19:13:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:13:35,043 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 2536 transitions. [2022-03-15 19:13:35,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 19:13:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2536 transitions. [2022-03-15 19:13:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 19:13:35,047 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:13:35,047 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, 1, 1, 1, 1] [2022-03-15 19:13:35,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:13:35,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:13:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:13:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1730506719, now seen corresponding path program 1 times [2022-03-15 19:13:35,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:13:35,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457683650] [2022-03-15 19:13:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:13:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:35,096 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 19:13:35,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:13:35,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457683650] [2022-03-15 19:13:35,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457683650] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:13:35,097 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:13:35,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 19:13:35,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [308651236] [2022-03-15 19:13:35,097 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:35,100 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:35,195 INFO L252 McrAutomatonBuilder]: Finished intersection with 418 states and 1270 transitions. [2022-03-15 19:13:35,195 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:13:38,120 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2669#(and (or (<= ~M~0 0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)) (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 2668#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 2671#(or (< 0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)), 2670#(< 0 ~M~0)] [2022-03-15 19:13:38,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:13:38,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:13:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:13:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-03-15 19:13:38,122 INFO L87 Difference]: Start difference. First operand 624 states and 2536 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 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 19:13:38,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:13:38,382 INFO L93 Difference]: Finished difference Result 914 states and 3644 transitions. [2022-03-15 19:13:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 19:13:38,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 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 26 [2022-03-15 19:13:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:13:38,388 INFO L225 Difference]: With dead ends: 914 [2022-03-15 19:13:38,388 INFO L226 Difference]: Without dead ends: 902 [2022-03-15 19:13:38,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 384 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-03-15 19:13:38,392 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 79 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:13:38,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 84 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:13:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-03-15 19:13:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 824. [2022-03-15 19:13:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 823 states have (on average 4.099635479951397) internal successors, (3374), 823 states have internal predecessors, (3374), 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 19:13:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 3374 transitions. [2022-03-15 19:13:38,435 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 3374 transitions. Word has length 26 [2022-03-15 19:13:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:13:38,435 INFO L470 AbstractCegarLoop]: Abstraction has 824 states and 3374 transitions. [2022-03-15 19:13:38,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 9 states have internal predecessors, (108), 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 19:13:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 3374 transitions. [2022-03-15 19:13:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 19:13:38,438 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:13:38,438 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, 1, 1, 1, 1] [2022-03-15 19:13:38,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 19:13:38,438 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:13:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:13:38,439 INFO L85 PathProgramCache]: Analyzing trace with hash -951592569, now seen corresponding path program 1 times [2022-03-15 19:13:38,439 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:13:38,439 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455355871] [2022-03-15 19:13:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:38,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:13:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:13:38,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:13:38,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455355871] [2022-03-15 19:13:38,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455355871] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:13:38,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562916110] [2022-03-15 19:13:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:38,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:13:38,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:13:38,483 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 19:13:38,513 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 19:13:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:38,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 19:13:38,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:13:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:13:38,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:13:38,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:13:38,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562916110] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:13:38,652 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:13:38,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-03-15 19:13:38,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2057879684] [2022-03-15 19:13:38,652 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:38,655 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:38,811 INFO L252 McrAutomatonBuilder]: Finished intersection with 402 states and 1214 transitions. [2022-03-15 19:13:38,811 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:13:42,494 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [5408#(or (<= ~M~0 0) (< 1 ~M~0)), 5404#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 5407#(and (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= 1 ~M~0)) (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 5405#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 5409#(or (<= ~M~0 0) (< 1 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)), 5406#(and (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (<= 1 ~M~0)))] [2022-03-15 19:13:42,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:13:42,494 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:13:42,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:13:42,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-03-15 19:13:42,495 INFO L87 Difference]: Start difference. First operand 824 states and 3374 transitions. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:13:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:13:42,985 INFO L93 Difference]: Finished difference Result 1174 states and 4752 transitions. [2022-03-15 19:13:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 19:13:42,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 26 [2022-03-15 19:13:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:13:42,992 INFO L225 Difference]: With dead ends: 1174 [2022-03-15 19:13:42,992 INFO L226 Difference]: Without dead ends: 1174 [2022-03-15 19:13:42,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 417 SyntacticMatches, 11 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:13:42,993 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 151 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:13:42,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 161 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:13:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2022-03-15 19:13:43,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 948. [2022-03-15 19:13:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 947 states have (on average 4.1552270327349525) internal successors, (3935), 947 states have internal predecessors, (3935), 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 19:13:43,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 3935 transitions. [2022-03-15 19:13:43,022 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 3935 transitions. Word has length 26 [2022-03-15 19:13:43,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:13:43,023 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 3935 transitions. [2022-03-15 19:13:43,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:13:43,023 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 3935 transitions. [2022-03-15 19:13:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 19:13:43,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:13:43,025 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, 1, 1, 1, 1] [2022-03-15 19:13:43,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 19:13:43,243 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 19:13:43,244 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:13:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:13:43,245 INFO L85 PathProgramCache]: Analyzing trace with hash 151182703, now seen corresponding path program 1 times [2022-03-15 19:13:43,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:13:43,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177810156] [2022-03-15 19:13:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:43,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:13:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:43,305 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 19:13:43,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:13:43,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177810156] [2022-03-15 19:13:43,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177810156] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:13:43,306 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:13:43,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 19:13:43,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [354711598] [2022-03-15 19:13:43,306 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:43,309 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:43,366 INFO L252 McrAutomatonBuilder]: Finished intersection with 402 states and 1214 transitions. [2022-03-15 19:13:43,367 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:13:47,488 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [8525#(and (or (= |thread4Thread1of1ForFork3_~i~3#1| 0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)) (or (<= ~N~0 0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0))), 8515#(< |thread4Thread1of1ForFork3_~i~3#1| ~N~0), 8519#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 8520#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 8521#(or (<= ~N~0 0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< 1 ~N~0)), 8526#(or (<= ~N~0 0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 8523#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< 0 ~N~0)), 8516#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 8524#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< 0 ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 8527#(or (= |thread4Thread1of1ForFork3_~i~3#1| 0) (< 0 ~N~0)), 8517#(or (<= ~N~0 0) (< 1 ~N~0)), 8518#(< |thread2Thread1of1ForFork0_~i~1#1| ~N~0), 8522#(< 0 ~N~0)] [2022-03-15 19:13:47,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 19:13:47,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:13:47,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 19:13:47,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-15 19:13:47,489 INFO L87 Difference]: Start difference. First operand 948 states and 3935 transitions. Second operand has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 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 19:13:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:13:47,963 INFO L93 Difference]: Finished difference Result 1542 states and 6421 transitions. [2022-03-15 19:13:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 19:13:47,963 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 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 26 [2022-03-15 19:13:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:13:47,970 INFO L225 Difference]: With dead ends: 1542 [2022-03-15 19:13:47,970 INFO L226 Difference]: Without dead ends: 1494 [2022-03-15 19:13:47,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:13:47,971 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 186 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:13:47,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 194 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:13:47,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-03-15 19:13:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1366. [2022-03-15 19:13:47,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 4.290842490842491) internal successors, (5857), 1365 states have internal predecessors, (5857), 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 19:13:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 5857 transitions. [2022-03-15 19:13:47,999 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 5857 transitions. Word has length 26 [2022-03-15 19:13:47,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:13:47,999 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 5857 transitions. [2022-03-15 19:13:47,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 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 19:13:47,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 5857 transitions. [2022-03-15 19:13:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 19:13:48,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:13:48,002 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, 1, 1, 1, 1] [2022-03-15 19:13:48,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 19:13:48,003 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:13:48,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:13:48,003 INFO L85 PathProgramCache]: Analyzing trace with hash -448127740, now seen corresponding path program 1 times [2022-03-15 19:13:48,004 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:13:48,004 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051874285] [2022-03-15 19:13:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:48,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:13:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:48,035 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 19:13:48,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:13:48,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051874285] [2022-03-15 19:13:48,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051874285] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:13:48,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:13:48,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 19:13:48,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [137035349] [2022-03-15 19:13:48,036 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:48,039 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:48,091 INFO L252 McrAutomatonBuilder]: Finished intersection with 418 states and 1270 transitions. [2022-03-15 19:13:48,091 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:13:51,474 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [12834#(< |thread4Thread1of1ForFork3_~i~3#1| ~N~0), 12840#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 12841#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< 0 ~N~0)), 12844#(<= ~N~0 0), 12836#(< |thread2Thread1of1ForFork0_~i~1#1| ~N~0), 12835#(< 0 ~N~0), 12837#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 12843#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 0) (< 1 ~N~0)), 12838#(or (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< 0 ~N~0)), 12839#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 12842#(or (<= ~N~0 0) (< 1 ~N~0)), 12845#(= |thread4Thread1of1ForFork3_~i~3#1| 0)] [2022-03-15 19:13:51,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 19:13:51,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:13:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 19:13:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-03-15 19:13:51,475 INFO L87 Difference]: Start difference. First operand 1366 states and 5857 transitions. Second operand has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 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 19:13:51,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:13:51,936 INFO L93 Difference]: Finished difference Result 1616 states and 6747 transitions. [2022-03-15 19:13:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:13:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 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 26 [2022-03-15 19:13:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:13:51,945 INFO L225 Difference]: With dead ends: 1616 [2022-03-15 19:13:51,945 INFO L226 Difference]: Without dead ends: 1592 [2022-03-15 19:13:51,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:13:51,947 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 202 mSDsluCounter, 1009 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:13:51,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 228 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:13:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2022-03-15 19:13:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1424. [2022-03-15 19:13:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 4.240337315530569) internal successors, (6034), 1423 states have internal predecessors, (6034), 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 19:13:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 6034 transitions. [2022-03-15 19:13:51,984 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 6034 transitions. Word has length 26 [2022-03-15 19:13:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:13:51,985 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 6034 transitions. [2022-03-15 19:13:51,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.176470588235293) internal successors, (173), 17 states have internal predecessors, (173), 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 19:13:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 6034 transitions. [2022-03-15 19:13:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:13:51,990 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:13:51,990 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, 1, 1, 1, 1, 1] [2022-03-15 19:13:51,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 19:13:51,990 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:13:51,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:13:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1141272374, now seen corresponding path program 1 times [2022-03-15 19:13:51,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:13:51,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941765256] [2022-03-15 19:13:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:51,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:13:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:13:52,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:13:52,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941765256] [2022-03-15 19:13:52,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941765256] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:13:52,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775995571] [2022-03-15 19:13:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:52,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:13:52,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:13:52,089 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 19:13:52,118 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 19:13:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:52,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 19:13:52,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:13:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:13:52,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:13:52,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:13:52,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775995571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:13:52,288 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:13:52,288 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 5 [2022-03-15 19:13:52,288 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1279086039] [2022-03-15 19:13:52,288 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:52,291 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:52,377 INFO L252 McrAutomatonBuilder]: Finished intersection with 522 states and 1630 transitions. [2022-03-15 19:13:52,377 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:13:57,560 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17491#(and (<= (+ ~counter1~0 1) ~counter2~0) (< ~counter2~0 (+ 2 ~counter1~0)))] [2022-03-15 19:13:57,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 19:13:57,563 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:13:57,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 19:13:57,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 19:13:57,564 INFO L87 Difference]: Start difference. First operand 1424 states and 6034 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 19:13:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:13:57,711 INFO L93 Difference]: Finished difference Result 2469 states and 9823 transitions. [2022-03-15 19:13:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 19:13:57,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 27 [2022-03-15 19:13:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:13:57,722 INFO L225 Difference]: With dead ends: 2469 [2022-03-15 19:13:57,723 INFO L226 Difference]: Without dead ends: 2312 [2022-03-15 19:13:57,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 524 SyntacticMatches, 19 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 19:13:57,725 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:13:57,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 39 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:13:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2022-03-15 19:13:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2016. [2022-03-15 19:13:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2015 states have (on average 4.245161290322581) internal successors, (8554), 2015 states have internal predecessors, (8554), 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 19:13:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 8554 transitions. [2022-03-15 19:13:57,775 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 8554 transitions. Word has length 27 [2022-03-15 19:13:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:13:57,777 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 8554 transitions. [2022-03-15 19:13:57,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 19:13:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 8554 transitions. [2022-03-15 19:13:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:13:57,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:13:57,783 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:13:57,801 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 19:13:57,999 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,SelfDestructingSolverStorable5 [2022-03-15 19:13:58,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:13:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:13:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash -710318214, now seen corresponding path program 2 times [2022-03-15 19:13:58,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:13:58,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959585961] [2022-03-15 19:13:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:13:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:13:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:13:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:13:58,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:13:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959585961] [2022-03-15 19:13:58,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959585961] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:13:58,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880185683] [2022-03-15 19:13:58,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:13:58,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:13:58,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:13:58,061 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) [2022-03-15 19:13:58,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 19:13:58,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:13:58,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:13:58,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 19:13:58,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:13:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:13:58,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:13:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:13:58,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880185683] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:13:58,227 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:13:58,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 19:13:58,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [352599179] [2022-03-15 19:13:58,227 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:13:58,229 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:13:58,298 INFO L252 McrAutomatonBuilder]: Finished intersection with 482 states and 1483 transitions. [2022-03-15 19:13:58,298 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:00,923 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [24159#(<= 1 ~M~0), 24162#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 24161#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 24164#(= thread3Thread1of1ForFork1_~i~2 0), 24160#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 24163#(or (<= ~M~0 1) (< 2 ~M~0))] [2022-03-15 19:14:00,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:14:00,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:14:00,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-03-15 19:14:00,924 INFO L87 Difference]: Start difference. First operand 2016 states and 8554 transitions. Second operand has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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 19:14:01,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:01,508 INFO L93 Difference]: Finished difference Result 2556 states and 10267 transitions. [2022-03-15 19:14:01,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 19:14:01,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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 27 [2022-03-15 19:14:01,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:01,521 INFO L225 Difference]: With dead ends: 2556 [2022-03-15 19:14:01,521 INFO L226 Difference]: Without dead ends: 2556 [2022-03-15 19:14:01,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 501 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:14:01,522 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 90 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:01,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 225 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:14:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-03-15 19:14:01,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 1992. [2022-03-15 19:14:01,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1991 states have (on average 4.181315921647413) internal successors, (8325), 1991 states have internal predecessors, (8325), 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 19:14:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 8325 transitions. [2022-03-15 19:14:01,571 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 8325 transitions. Word has length 27 [2022-03-15 19:14:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:01,571 INFO L470 AbstractCegarLoop]: Abstraction has 1992 states and 8325 transitions. [2022-03-15 19:14:01,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.545454545454545) internal successors, (127), 11 states have internal predecessors, (127), 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 19:14:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 8325 transitions. [2022-03-15 19:14:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 19:14:01,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:01,577 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:14:01,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-15 19:14:01,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:01,794 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:01,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1595576167, now seen corresponding path program 2 times [2022-03-15 19:14:01,796 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:01,796 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380021036] [2022-03-15 19:14:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:01,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:01,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380021036] [2022-03-15 19:14:01,855 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380021036] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:01,855 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348621285] [2022-03-15 19:14:01,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:14:01,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:01,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:01,856 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) [2022-03-15 19:14:01,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 19:14:01,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:14:01,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:14:01,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 19:14:01,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:02,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:02,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:02,065 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348621285] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:14:02,065 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:14:02,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-15 19:14:02,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1217227223] [2022-03-15 19:14:02,066 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:02,068 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:02,179 INFO L252 McrAutomatonBuilder]: Finished intersection with 642 states and 2046 transitions. [2022-03-15 19:14:02,179 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:08,112 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [30917#(or (<= ~M~0 0) (< 1 ~M~0)), 30918#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 0) (< 1 ~M~0)), 30919#(or (<= ~M~0 0) (< 1 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)), 30912#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 30915#(and (or (<= ~M~0 1) (< thread1Thread1of1ForFork2_~i~0 ~M~0)) (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 30914#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 30916#(and (or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)) (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 30913#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 30911#(< thread1Thread1of1ForFork2_~i~0 ~M~0)] [2022-03-15 19:14:08,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:14:08,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:14:08,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:14:08,114 INFO L87 Difference]: Start difference. First operand 1992 states and 8325 transitions. Second operand has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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 19:14:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:08,882 INFO L93 Difference]: Finished difference Result 3904 states and 16211 transitions. [2022-03-15 19:14:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 19:14:08,882 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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 28 [2022-03-15 19:14:08,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:08,911 INFO L225 Difference]: With dead ends: 3904 [2022-03-15 19:14:08,912 INFO L226 Difference]: Without dead ends: 3818 [2022-03-15 19:14:08,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 633 SyntacticMatches, 48 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=1572, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 19:14:08,913 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 152 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:08,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 293 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:14:08,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2022-03-15 19:14:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 2506. [2022-03-15 19:14:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 4.303792415169661) internal successors, (10781), 2505 states have internal predecessors, (10781), 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 19:14:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 10781 transitions. [2022-03-15 19:14:08,978 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 10781 transitions. Word has length 28 [2022-03-15 19:14:08,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:08,979 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 10781 transitions. [2022-03-15 19:14:08,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.125) internal successors, (178), 16 states have internal predecessors, (178), 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 19:14:08,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 10781 transitions. [2022-03-15 19:14:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 19:14:08,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:08,985 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:14:09,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 19:14:09,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:09,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash -27888959, now seen corresponding path program 3 times [2022-03-15 19:14:09,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:09,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880718498] [2022-03-15 19:14:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:09,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:09,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:09,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880718498] [2022-03-15 19:14:09,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880718498] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:09,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110823566] [2022-03-15 19:14:09,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:14:09,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:09,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:09,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:14:09,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 19:14:09,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 19:14:09,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:14:09,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 19:14:09,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:09,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:09,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:09,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110823566] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:14:09,430 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:14:09,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-03-15 19:14:09,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2099516257] [2022-03-15 19:14:09,431 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:09,433 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:09,537 INFO L252 McrAutomatonBuilder]: Finished intersection with 626 states and 1990 transitions. [2022-03-15 19:14:09,537 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:14,925 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [40088#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 40094#(and (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= 2 ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)))), 40092#(and (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)) (or (<= 2 ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0))), 40093#(and (or (<= 2 ~M~0) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)) (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 40095#(or (<= ~M~0 1) (< 2 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)), 40086#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 40085#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 40087#(or (<= ~M~0 1) (< 2 ~M~0)), 40091#(or (<= ~M~0 1) (< 2 ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 40090#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 40089#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 40084#(< thread1Thread1of1ForFork2_~i~0 ~M~0)] [2022-03-15 19:14:14,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 19:14:14,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:14,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 19:14:14,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:14:14,926 INFO L87 Difference]: Start difference. First operand 2506 states and 10781 transitions. Second operand has 19 states, 19 states have (on average 10.631578947368421) internal successors, (202), 19 states have internal predecessors, (202), 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 19:14:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:16,055 INFO L93 Difference]: Finished difference Result 4824 states and 20495 transitions. [2022-03-15 19:14:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 19:14:16,056 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.631578947368421) internal successors, (202), 19 states have internal predecessors, (202), 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 28 [2022-03-15 19:14:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:16,089 INFO L225 Difference]: With dead ends: 4824 [2022-03-15 19:14:16,089 INFO L226 Difference]: Without dead ends: 4824 [2022-03-15 19:14:16,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 660 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=623, Invalid=2569, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 19:14:16,090 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 299 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:16,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 358 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:14:16,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2022-03-15 19:14:16,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 3490. [2022-03-15 19:14:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 3489 states have (on average 4.481226712525078) internal successors, (15635), 3489 states have internal predecessors, (15635), 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 19:14:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 15635 transitions. [2022-03-15 19:14:16,194 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 15635 transitions. Word has length 28 [2022-03-15 19:14:16,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:16,195 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 15635 transitions. [2022-03-15 19:14:16,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.631578947368421) internal successors, (202), 19 states have internal predecessors, (202), 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 19:14:16,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 15635 transitions. [2022-03-15 19:14:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 19:14:16,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:16,205 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-15 19:14:16,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 19:14:16,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:16,425 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1355923545, now seen corresponding path program 3 times [2022-03-15 19:14:16,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:16,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100131058] [2022-03-15 19:14:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:16,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:14:16,456 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:16,456 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100131058] [2022-03-15 19:14:16,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100131058] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:14:16,457 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:14:16,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 19:14:16,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [358912902] [2022-03-15 19:14:16,457 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:16,459 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:16,574 INFO L252 McrAutomatonBuilder]: Finished intersection with 562 states and 1752 transitions. [2022-03-15 19:14:16,574 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:18,582 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [52010#(= thread3Thread1of1ForFork1_~i~2 0), 52008#(< 0 ~M~0), 52007#(< thread3Thread1of1ForFork1_~i~2 ~M~0), 52009#(<= ~M~0 0)] [2022-03-15 19:14:18,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:14:18,582 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:18,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:14:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-15 19:14:18,583 INFO L87 Difference]: Start difference. First operand 3490 states and 15635 transitions. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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 19:14:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:18,751 INFO L93 Difference]: Finished difference Result 3700 states and 16422 transitions. [2022-03-15 19:14:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:14:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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 28 [2022-03-15 19:14:18,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:18,782 INFO L225 Difference]: With dead ends: 3700 [2022-03-15 19:14:18,782 INFO L226 Difference]: Without dead ends: 3652 [2022-03-15 19:14:18,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 532 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-03-15 19:14:18,782 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:18,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 129 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:14:18,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2022-03-15 19:14:18,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3430. [2022-03-15 19:14:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3430 states, 3429 states have (on average 4.489647127442403) internal successors, (15395), 3429 states have internal predecessors, (15395), 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 19:14:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3430 states to 3430 states and 15395 transitions. [2022-03-15 19:14:18,864 INFO L78 Accepts]: Start accepts. Automaton has 3430 states and 15395 transitions. Word has length 28 [2022-03-15 19:14:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:18,865 INFO L470 AbstractCegarLoop]: Abstraction has 3430 states and 15395 transitions. [2022-03-15 19:14:18,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 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 19:14:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3430 states and 15395 transitions. [2022-03-15 19:14:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 19:14:18,872 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:18,872 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:14:18,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-15 19:14:18,873 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:18,873 INFO L85 PathProgramCache]: Analyzing trace with hash -288686788, now seen corresponding path program 4 times [2022-03-15 19:14:18,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:18,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912679625] [2022-03-15 19:14:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:18,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:18,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:18,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912679625] [2022-03-15 19:14:18,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912679625] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:18,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587697155] [2022-03-15 19:14:18,986 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:14:18,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:18,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:18,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:14:18,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 19:14:19,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:14:19,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:14:19,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 19:14:19,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:19,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:19,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587697155] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:14:19,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:14:19,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 3] total 8 [2022-03-15 19:14:19,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [722250230] [2022-03-15 19:14:19,287 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:19,289 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:19,421 INFO L252 McrAutomatonBuilder]: Finished intersection with 770 states and 2497 transitions. [2022-03-15 19:14:19,422 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:25,401 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [62762#(and (<= (+ 2 ~counter1~0) ~counter2~0) (< ~counter2~0 (+ 3 ~counter1~0))), 62761#(and (<= (+ ~counter1~0 1) ~counter2~0) (< ~counter2~0 (+ 2 ~counter1~0)))] [2022-03-15 19:14:25,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:14:25,401 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:25,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:14:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-15 19:14:25,402 INFO L87 Difference]: Start difference. First operand 3430 states and 15395 transitions. Second operand has 9 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 19:14:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:25,588 INFO L93 Difference]: Finished difference Result 7115 states and 30959 transitions. [2022-03-15 19:14:25,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 19:14:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 29 [2022-03-15 19:14:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:25,607 INFO L225 Difference]: With dead ends: 7115 [2022-03-15 19:14:25,608 INFO L226 Difference]: Without dead ends: 7074 [2022-03-15 19:14:25,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 771 SyntacticMatches, 20 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-15 19:14:25,608 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:25,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 91 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:14:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7074 states. [2022-03-15 19:14:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7074 to 5092. [2022-03-15 19:14:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 4.53702612453349) internal successors, (23098), 5091 states have internal predecessors, (23098), 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 19:14:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 23098 transitions. [2022-03-15 19:14:25,746 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 23098 transitions. Word has length 29 [2022-03-15 19:14:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:25,746 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 23098 transitions. [2022-03-15 19:14:25,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 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 19:14:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 23098 transitions. [2022-03-15 19:14:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 19:14:25,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:25,757 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-15 19:14:25,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 19:14:25,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:25,973 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 466468630, now seen corresponding path program 5 times [2022-03-15 19:14:25,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:25,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558709605] [2022-03-15 19:14:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:26,102 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:26,102 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558709605] [2022-03-15 19:14:26,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558709605] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:26,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042700169] [2022-03-15 19:14:26,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:14:26,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:26,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:26,104 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:14:26,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 19:14:26,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:14:26,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:14:26,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 19:14:26,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:26,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:26,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042700169] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:14:26,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:14:26,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2022-03-15 19:14:26,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [110003756] [2022-03-15 19:14:26,324 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:26,327 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:26,452 INFO L252 McrAutomatonBuilder]: Finished intersection with 730 states and 2350 transitions. [2022-03-15 19:14:26,452 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:32,983 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [80257#(or (<= 1 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 0)), 80254#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 80250#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 80258#(or (<= ~M~0 2) (< 3 ~M~0)), 80251#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 80249#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 80252#(or (<= 3 ~M~0) (<= ~M~0 0)), 80256#(or (<= 2 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 0)), 80253#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 80259#(<= thread3Thread1of1ForFork1_~i~2 1), 80260#(= thread3Thread1of1ForFork1_~i~2 0), 80248#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 80255#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)))] [2022-03-15 19:14:32,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 19:14:32,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:32,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 19:14:32,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=803, Unknown=0, NotChecked=0, Total=930 [2022-03-15 19:14:32,985 INFO L87 Difference]: Start difference. First operand 5092 states and 23098 transitions. Second operand has 21 states, 21 states have (on average 10.714285714285714) internal successors, (225), 21 states have internal predecessors, (225), 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 19:14:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:36,674 INFO L93 Difference]: Finished difference Result 18180 states and 77080 transitions. [2022-03-15 19:14:36,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-03-15 19:14:36,675 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.714285714285714) internal successors, (225), 21 states have internal predecessors, (225), 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 29 [2022-03-15 19:14:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:36,726 INFO L225 Difference]: With dead ends: 18180 [2022-03-15 19:14:36,726 INFO L226 Difference]: Without dead ends: 18180 [2022-03-15 19:14:36,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 815 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3730 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1987, Invalid=10223, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 19:14:36,729 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 500 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 3993 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 4089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:36,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 792 Invalid, 4089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3993 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 19:14:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18180 states. [2022-03-15 19:14:36,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18180 to 5452. [2022-03-15 19:14:36,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5452 states, 5451 states have (on average 4.550724637681159) internal successors, (24806), 5451 states have internal predecessors, (24806), 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 19:14:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 24806 transitions. [2022-03-15 19:14:36,950 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 24806 transitions. Word has length 29 [2022-03-15 19:14:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:36,950 INFO L470 AbstractCegarLoop]: Abstraction has 5452 states and 24806 transitions. [2022-03-15 19:14:36,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.714285714285714) internal successors, (225), 21 states have internal predecessors, (225), 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 19:14:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 24806 transitions. [2022-03-15 19:14:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:14:36,964 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:36,965 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:14:36,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 19:14:37,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:37,178 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:37,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:37,178 INFO L85 PathProgramCache]: Analyzing trace with hash 216515105, now seen corresponding path program 6 times [2022-03-15 19:14:37,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:37,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618931578] [2022-03-15 19:14:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:37,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:37,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:37,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618931578] [2022-03-15 19:14:37,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618931578] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:37,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463377422] [2022-03-15 19:14:37,248 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:14:37,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:37,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:37,250 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:14:37,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 19:14:37,334 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:14:37,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:14:37,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:14:37,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:37,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:37,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:37,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463377422] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:14:37,444 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:14:37,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-03-15 19:14:37,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1012856684] [2022-03-15 19:14:37,445 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:37,473 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:37,668 INFO L252 McrAutomatonBuilder]: Finished intersection with 914 states and 3004 transitions. [2022-03-15 19:14:37,669 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:46,071 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 16 new interpolants: [109780#(and (or (<= ~M~0 2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)) (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 109773#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 109776#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 109779#(and (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)) (or (<= ~M~0 2) (< thread1Thread1of1ForFork2_~i~0 ~M~0))), 109784#(or (<= ~M~0 1) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (< 2 ~M~0)), 109782#(or (<= ~M~0 1) (< 2 ~M~0)), 109788#(or (<= ~M~0 1) (< 2 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)), 109774#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 109787#(and (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)))), 109785#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 109777#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 109783#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 109778#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 109786#(or (<= ~M~0 1) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (< 2 ~M~0)), 109775#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 109781#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)))] [2022-03-15 19:14:46,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 19:14:46,072 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:46,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 19:14:46,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2022-03-15 19:14:46,073 INFO L87 Difference]: Start difference. First operand 5452 states and 24806 transitions. Second operand has 25 states, 25 states have (on average 10.64) internal successors, (266), 25 states have internal predecessors, (266), 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 19:14:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:47,408 INFO L93 Difference]: Finished difference Result 13106 states and 58333 transitions. [2022-03-15 19:14:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 19:14:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.64) internal successors, (266), 25 states have internal predecessors, (266), 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 30 [2022-03-15 19:14:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:47,448 INFO L225 Difference]: With dead ends: 13106 [2022-03-15 19:14:47,449 INFO L226 Difference]: Without dead ends: 12992 [2022-03-15 19:14:47,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1042 GetRequests, 900 SyntacticMatches, 68 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1073, Invalid=4627, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 19:14:47,459 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 546 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:47,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 477 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 19:14:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12992 states. [2022-03-15 19:14:47,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12992 to 6540. [2022-03-15 19:14:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6540 states, 6539 states have (on average 4.627160116225722) internal successors, (30257), 6539 states have internal predecessors, (30257), 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 19:14:47,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 30257 transitions. [2022-03-15 19:14:47,738 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 30257 transitions. Word has length 30 [2022-03-15 19:14:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:47,738 INFO L470 AbstractCegarLoop]: Abstraction has 6540 states and 30257 transitions. [2022-03-15 19:14:47,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.64) internal successors, (266), 25 states have internal predecessors, (266), 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 19:14:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 30257 transitions. [2022-03-15 19:14:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:14:47,754 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:47,754 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:14:47,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-03-15 19:14:47,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 19:14:47,970 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:47,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1428703751, now seen corresponding path program 7 times [2022-03-15 19:14:47,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:47,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397653421] [2022-03-15 19:14:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:47,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:48,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:48,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:48,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397653421] [2022-03-15 19:14:48,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397653421] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:48,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244752785] [2022-03-15 19:14:48,020 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:14:48,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:48,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:48,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:14:48,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 19:14:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:48,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:14:48,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:48,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:48,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244752785] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:14:48,212 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:14:48,212 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-03-15 19:14:48,212 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1673426300] [2022-03-15 19:14:48,212 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:48,215 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:48,389 INFO L252 McrAutomatonBuilder]: Finished intersection with 898 states and 2948 transitions. [2022-03-15 19:14:48,389 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:14:56,402 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 20 new interpolants: [136303#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 136301#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 136308#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 136312#(and (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= 3 ~M~0))), 136315#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 136319#(or (<= ~M~0 2) (< 3 ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 136314#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 136320#(or (<= ~M~0 2) (< 3 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)), 136302#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 136305#(or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 136307#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 136318#(or (<= ~M~0 2) (< 3 ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 136304#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 136309#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 136317#(or (<= ~M~0 2) (< 3 ~M~0)), 136310#(and (or (<= 3 ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)) (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 136313#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 136306#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 136311#(and (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (<= 3 ~M~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)) (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 136316#(and (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= 3 ~M~0)))] [2022-03-15 19:14:56,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 19:14:56,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:14:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 19:14:56,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 19:14:56,404 INFO L87 Difference]: Start difference. First operand 6540 states and 30257 transitions. Second operand has 29 states, 29 states have (on average 10.275862068965518) internal successors, (298), 29 states have internal predecessors, (298), 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 19:14:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:14:58,877 INFO L93 Difference]: Finished difference Result 20528 states and 95343 transitions. [2022-03-15 19:14:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-15 19:14:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.275862068965518) internal successors, (298), 29 states have internal predecessors, (298), 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 30 [2022-03-15 19:14:58,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:14:58,939 INFO L225 Difference]: With dead ends: 20528 [2022-03-15 19:14:58,939 INFO L226 Difference]: Without dead ends: 20528 [2022-03-15 19:14:58,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 960 SyntacticMatches, 13 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1902, Invalid=9018, Unknown=0, NotChecked=0, Total=10920 [2022-03-15 19:14:58,942 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 576 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:14:58,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [576 Valid, 648 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 19:14:58,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20528 states. [2022-03-15 19:14:59,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20528 to 9076. [2022-03-15 19:14:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9076 states, 9075 states have (on average 4.84099173553719) internal successors, (43932), 9075 states have internal predecessors, (43932), 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 19:14:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9076 states to 9076 states and 43932 transitions. [2022-03-15 19:14:59,343 INFO L78 Accepts]: Start accepts. Automaton has 9076 states and 43932 transitions. Word has length 30 [2022-03-15 19:14:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:14:59,343 INFO L470 AbstractCegarLoop]: Abstraction has 9076 states and 43932 transitions. [2022-03-15 19:14:59,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.275862068965518) internal successors, (298), 29 states have internal predecessors, (298), 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 19:14:59,344 INFO L276 IsEmpty]: Start isEmpty. Operand 9076 states and 43932 transitions. [2022-03-15 19:14:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:14:59,365 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:14:59,365 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:14:59,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 19:14:59,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 19:14:59,586 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:14:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:14:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash -560058393, now seen corresponding path program 8 times [2022-03-15 19:14:59,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:14:59,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693548871] [2022-03-15 19:14:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:14:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:14:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:14:59,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:59,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:14:59,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693548871] [2022-03-15 19:14:59,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693548871] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:14:59,644 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016937919] [2022-03-15 19:14:59,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:14:59,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:14:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:14:59,645 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:14:59,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 19:14:59,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:14:59,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:14:59,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:14:59,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:14:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:59,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:14:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:14:59,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016937919] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:14:59,821 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:14:59,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-15 19:14:59,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [828680115] [2022-03-15 19:14:59,821 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:14:59,824 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:14:59,970 INFO L252 McrAutomatonBuilder]: Finished intersection with 834 states and 2710 transitions. [2022-03-15 19:14:59,970 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:15:06,379 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 15 new interpolants: [175415#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 175418#(or (<= ~M~0 0) (< 1 ~M~0)), 175412#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 175420#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 0) (< 1 ~M~0)), 175413#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 175422#(<= ~M~0 1), 175411#(or (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 175421#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 0) (< 1 ~M~0)), 175414#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 175417#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0)), 175423#(<= thread3Thread1of1ForFork1_~i~2 1), 175410#(< thread3Thread1of1ForFork1_~i~2 ~M~0), 175416#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 175419#(or (<= ~M~0 0) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0) (< 1 ~M~0)), 175424#(= thread3Thread1of1ForFork1_~i~2 0)] [2022-03-15 19:15:06,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 19:15:06,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:15:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 19:15:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 19:15:06,380 INFO L87 Difference]: Start difference. First operand 9076 states and 43932 transitions. Second operand has 24 states, 24 states have (on average 10.666666666666666) internal successors, (256), 24 states have internal predecessors, (256), 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 19:15:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:15:07,364 INFO L93 Difference]: Finished difference Result 11600 states and 53606 transitions. [2022-03-15 19:15:07,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 19:15:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.666666666666666) internal successors, (256), 24 states have internal predecessors, (256), 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 30 [2022-03-15 19:15:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:15:07,397 INFO L225 Difference]: With dead ends: 11600 [2022-03-15 19:15:07,397 INFO L226 Difference]: Without dead ends: 11552 [2022-03-15 19:15:07,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 831 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=536, Invalid=2656, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 19:15:07,399 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 201 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:15:07,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 410 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:15:07,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11552 states. [2022-03-15 19:15:07,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11552 to 9120. [2022-03-15 19:15:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9120 states, 9119 states have (on average 4.793837043535476) internal successors, (43715), 9119 states have internal predecessors, (43715), 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 19:15:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9120 states to 9120 states and 43715 transitions. [2022-03-15 19:15:07,616 INFO L78 Accepts]: Start accepts. Automaton has 9120 states and 43715 transitions. Word has length 30 [2022-03-15 19:15:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:15:07,616 INFO L470 AbstractCegarLoop]: Abstraction has 9120 states and 43715 transitions. [2022-03-15 19:15:07,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.666666666666666) internal successors, (256), 24 states have internal predecessors, (256), 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 19:15:07,616 INFO L276 IsEmpty]: Start isEmpty. Operand 9120 states and 43715 transitions. [2022-03-15 19:15:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:15:07,638 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:15:07,638 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:15:07,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 19:15:07,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 19:15:07,852 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:15:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:15:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash -652766082, now seen corresponding path program 1 times [2022-03-15 19:15:07,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:15:07,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108125493] [2022-03-15 19:15:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:15:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:15:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:15:07,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:07,928 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:15:07,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108125493] [2022-03-15 19:15:07,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108125493] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:15:07,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462536633] [2022-03-15 19:15:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:15:07,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:15:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:15:07,929 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:15:07,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 19:15:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:15:08,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 19:15:08,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:15:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:08,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:15:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:08,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462536633] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:15:08,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:15:08,186 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-03-15 19:15:08,186 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1102317702] [2022-03-15 19:15:08,186 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:15:08,189 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:15:08,301 INFO L252 McrAutomatonBuilder]: Finished intersection with 618 states and 1874 transitions. [2022-03-15 19:15:08,301 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:15:17,166 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 29 new interpolants: [205523#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 205527#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 0) (< 1 ~N~0)), 205520#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 0) (< 1 ~N~0)), 205516#(or (<= ~N~0 0) (< 1 ~N~0)), 205532#(and (or (= |thread4Thread1of1ForFork3_~i~3#1| 0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)) (or (<= ~N~0 1) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0))), 205514#(< |thread2Thread1of1ForFork0_~i~1#1| ~N~0), 205538#(<= ~N~0 1), 205539#(or (<= ~N~0 1) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 205531#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 0) (< 1 ~N~0)), 205541#(= |thread4Thread1of1ForFork3_~i~3#1| 0), 205517#(< |thread4Thread1of1ForFork3_~i~3#1| ~N~0), 205540#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 1)), 205537#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 1) (< 2 ~N~0)), 205533#(and (or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (= |thread4Thread1of1ForFork3_~i~3#1| 0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)) (or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 1))), 205535#(or (<= ~N~0 1) (< 2 ~N~0)), 205525#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 205524#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 205521#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 205515#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 205536#(or (<= ~N~0 1) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< 2 ~N~0)), 205534#(or (= |thread4Thread1of1ForFork3_~i~3#1| 0) (<= ~N~0 0) (< 1 ~N~0)), 205522#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 205529#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 205542#(<= |thread2Thread1of1ForFork0_~i~1#1| 1), 205518#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 205528#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1))), 205530#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 205519#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 205526#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 0) (< 1 ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0))] [2022-03-15 19:15:17,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 19:15:17,167 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:15:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 19:15:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1616, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 19:15:17,167 INFO L87 Difference]: Start difference. First operand 9120 states and 43715 transitions. Second operand has 36 states, 36 states have (on average 9.38888888888889) internal successors, (338), 36 states have internal predecessors, (338), 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 19:15:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:15:19,061 INFO L93 Difference]: Finished difference Result 22380 states and 109124 transitions. [2022-03-15 19:15:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 19:15:19,061 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 9.38888888888889) internal successors, (338), 36 states have internal predecessors, (338), 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 30 [2022-03-15 19:15:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:15:19,132 INFO L225 Difference]: With dead ends: 22380 [2022-03-15 19:15:19,132 INFO L226 Difference]: Without dead ends: 22180 [2022-03-15 19:15:19,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 655 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1456, Invalid=6734, Unknown=0, NotChecked=0, Total=8190 [2022-03-15 19:15:19,136 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 712 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 3443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:15:19,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [712 Valid, 609 Invalid, 3443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3315 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-15 19:15:19,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22180 states. [2022-03-15 19:15:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22180 to 15798. [2022-03-15 19:15:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15798 states, 15797 states have (on average 5.081977590681775) internal successors, (80280), 15797 states have internal predecessors, (80280), 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 19:15:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15798 states to 15798 states and 80280 transitions. [2022-03-15 19:15:19,676 INFO L78 Accepts]: Start accepts. Automaton has 15798 states and 80280 transitions. Word has length 30 [2022-03-15 19:15:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:15:19,676 INFO L470 AbstractCegarLoop]: Abstraction has 15798 states and 80280 transitions. [2022-03-15 19:15:19,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.38888888888889) internal successors, (338), 36 states have internal predecessors, (338), 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 19:15:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 15798 states and 80280 transitions. [2022-03-15 19:15:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 19:15:19,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:15:19,715 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:15:19,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 19:15:19,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 19:15:19,934 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:15:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:15:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash -695436815, now seen corresponding path program 2 times [2022-03-15 19:15:19,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:15:19,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346611025] [2022-03-15 19:15:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:15:19,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:15:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:15:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:15:19,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:15:19,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346611025] [2022-03-15 19:15:19,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346611025] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:15:19,978 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269294607] [2022-03-15 19:15:19,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:15:19,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:15:19,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:15:19,980 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:15:19,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 19:15:20,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:15:20,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:15:20,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 19:15:20,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:15:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:15:20,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:15:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:15:20,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269294607] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:15:20,199 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:15:20,199 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-03-15 19:15:20,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [149080071] [2022-03-15 19:15:20,199 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:15:20,202 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:15:20,323 INFO L252 McrAutomatonBuilder]: Finished intersection with 640 states and 1950 transitions. [2022-03-15 19:15:20,323 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:15:28,681 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 24 new interpolants: [259865#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 259857#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 259853#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 259861#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 0) (< 1 ~N~0)), 259870#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 1) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0) (< 2 ~N~0)), 259866#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 1) (< 2 ~N~0)), 259851#(or (<= ~N~0 0) (< 1 ~N~0)), 259855#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 259854#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 259863#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 259849#(< |thread4Thread1of1ForFork3_~i~3#1| ~N~0), 259862#(or (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 0) (< 1 ~N~0)), 259850#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 259860#(or (<= ~N~0 0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< 1 ~N~0)), 259867#(<= ~N~0 1), 259868#(<= |thread4Thread1of1ForFork3_~i~3#1| 1), 259852#(< |thread2Thread1of1ForFork0_~i~1#1| ~N~0), 259858#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 259856#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 259864#(or (<= ~N~0 1) (< 2 ~N~0)), 259871#(= |thread4Thread1of1ForFork3_~i~3#1| 0), 259859#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 259869#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 259872#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (<= ~N~0 0) (< 1 ~N~0))] [2022-03-15 19:15:28,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 19:15:28,682 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:15:28,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 19:15:28,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1256, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 19:15:28,682 INFO L87 Difference]: Start difference. First operand 15798 states and 80280 transitions. Second operand has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 31 states have internal predecessors, (290), 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 19:15:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:15:30,214 INFO L93 Difference]: Finished difference Result 25192 states and 122564 transitions. [2022-03-15 19:15:30,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-03-15 19:15:30,216 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 31 states have internal predecessors, (290), 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 30 [2022-03-15 19:15:30,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:15:30,305 INFO L225 Difference]: With dead ends: 25192 [2022-03-15 19:15:30,306 INFO L226 Difference]: Without dead ends: 25114 [2022-03-15 19:15:30,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 680 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1227, Invalid=5745, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 19:15:30,307 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 777 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 2205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 19:15:30,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 395 Invalid, 2205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-15 19:15:30,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25114 states. [2022-03-15 19:15:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25114 to 16138. [2022-03-15 19:15:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 16137 states have (on average 5.048336121955754) internal successors, (81465), 16137 states have internal predecessors, (81465), 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 19:15:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 81465 transitions. [2022-03-15 19:15:30,754 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 81465 transitions. Word has length 30 [2022-03-15 19:15:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:15:30,754 INFO L470 AbstractCegarLoop]: Abstraction has 16138 states and 81465 transitions. [2022-03-15 19:15:30,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.35483870967742) internal successors, (290), 31 states have internal predecessors, (290), 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 19:15:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 81465 transitions. [2022-03-15 19:15:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-15 19:15:30,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:15:30,790 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-03-15 19:15:30,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 19:15:30,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 19:15:30,997 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:15:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:15:30,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1916014262, now seen corresponding path program 9 times [2022-03-15 19:15:30,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:15:30,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911366885] [2022-03-15 19:15:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:15:30,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:15:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:15:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:31,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:15:31,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911366885] [2022-03-15 19:15:31,126 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911366885] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:15:31,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7982377] [2022-03-15 19:15:31,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:15:31,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:15:31,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:15:31,139 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:15:31,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 19:15:31,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:15:31,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:15:31,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 19:15:31,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:15:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:31,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:15:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:31,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7982377] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:15:31,492 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:15:31,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 4] total 11 [2022-03-15 19:15:31,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [487488308] [2022-03-15 19:15:31,493 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:15:31,496 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:15:31,704 INFO L252 McrAutomatonBuilder]: Finished intersection with 1066 states and 3546 transitions. [2022-03-15 19:15:31,705 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:15:39,992 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [317671#(and (<= (+ 3 ~counter1~0) ~counter2~0) (< ~counter2~0 (+ ~counter1~0 4))), 317670#(and (<= (+ 2 ~counter1~0) ~counter2~0) (< ~counter2~0 (+ 3 ~counter1~0))), 317669#(and (<= (+ ~counter1~0 1) ~counter2~0) (< ~counter2~0 (+ 2 ~counter1~0)))] [2022-03-15 19:15:39,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:15:39,993 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:15:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:15:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-03-15 19:15:39,993 INFO L87 Difference]: Start difference. First operand 16138 states and 81465 transitions. Second operand has 12 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 19:15:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:15:40,634 INFO L93 Difference]: Finished difference Result 32063 states and 155590 transitions. [2022-03-15 19:15:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 19:15:40,634 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 31 [2022-03-15 19:15:40,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:15:40,760 INFO L225 Difference]: With dead ends: 32063 [2022-03-15 19:15:40,761 INFO L226 Difference]: Without dead ends: 31934 [2022-03-15 19:15:40,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 1052 SyntacticMatches, 35 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-03-15 19:15:40,761 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 72 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:15:40,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 237 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:15:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31934 states. [2022-03-15 19:15:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31934 to 21138. [2022-03-15 19:15:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21138 states, 21137 states have (on average 5.047736197189762) internal successors, (106694), 21137 states have internal predecessors, (106694), 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 19:15:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21138 states to 21138 states and 106694 transitions. [2022-03-15 19:15:41,359 INFO L78 Accepts]: Start accepts. Automaton has 21138 states and 106694 transitions. Word has length 31 [2022-03-15 19:15:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:15:41,360 INFO L470 AbstractCegarLoop]: Abstraction has 21138 states and 106694 transitions. [2022-03-15 19:15:41,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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 19:15:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 21138 states and 106694 transitions. [2022-03-15 19:15:41,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-15 19:15:41,411 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:15:41,411 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:15:41,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 19:15:41,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 19:15:41,623 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:15:41,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:15:41,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1244734010, now seen corresponding path program 10 times [2022-03-15 19:15:41,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:15:41,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156402960] [2022-03-15 19:15:41,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:15:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:15:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:15:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:41,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:15:41,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156402960] [2022-03-15 19:15:41,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156402960] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:15:41,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908607425] [2022-03-15 19:15:41,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:15:41,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:15:41,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:15:41,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:15:41,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 19:15:41,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:15:41,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:15:41,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 19:15:41,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:15:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:42,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:15:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:15:42,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908607425] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:15:42,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:15:42,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2022-03-15 19:15:42,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2047370219] [2022-03-15 19:15:42,117 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:15:42,120 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:15:42,351 INFO L252 McrAutomatonBuilder]: Finished intersection with 1026 states and 3399 transitions. [2022-03-15 19:15:42,351 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:15:50,430 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 21 new interpolants: [392218#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 392232#(= thread3Thread1of1ForFork1_~i~2 0), 392226#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 392217#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 392225#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 392220#(or (<= 3 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 1)), 392233#(or (<= ~M~0 1) (<= 1 thread1Thread1of1ForFork2_~i~0)), 392214#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 392223#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 392227#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= thread3Thread1of1ForFork1_~i~2 thread1Thread1of1ForFork2_~i~0)), 392229#(or (< 4 ~M~0) (<= ~M~0 3)), 392215#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0)), 392224#(or (<= ~M~0 1) (<= 2 thread1Thread1of1ForFork2_~i~0)), 392228#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0)), 392231#(<= thread3Thread1of1ForFork1_~i~2 1), 392213#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 392216#(or (<= ~M~0 1) (<= 4 ~M~0)), 392221#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 392219#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 392222#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 392230#(<= thread3Thread1of1ForFork1_~i~2 2)] [2022-03-15 19:15:50,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 19:15:50,431 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:15:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 19:15:50,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1591, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 19:15:50,431 INFO L87 Difference]: Start difference. First operand 21138 states and 106694 transitions. Second operand has 31 states, 31 states have (on average 10.387096774193548) internal successors, (322), 31 states have internal predecessors, (322), 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 19:15:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:15:57,634 INFO L93 Difference]: Finished difference Result 87622 states and 399925 transitions. [2022-03-15 19:15:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-03-15 19:15:57,635 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.387096774193548) internal successors, (322), 31 states have internal predecessors, (322), 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 31 [2022-03-15 19:15:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:15:58,316 INFO L225 Difference]: With dead ends: 87622 [2022-03-15 19:15:58,316 INFO L226 Difference]: Without dead ends: 87622 [2022-03-15 19:15:58,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1382 GetRequests, 1182 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14365 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5878, Invalid=34724, Unknown=0, NotChecked=0, Total=40602 [2022-03-15 19:15:58,326 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 998 mSDsluCounter, 6843 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 7518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:15:58,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 1352 Invalid, 7518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 19:15:58,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87622 states. [2022-03-15 19:15:59,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87622 to 18628. [2022-03-15 19:15:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18628 states, 18627 states have (on average 4.856069146937242) internal successors, (90454), 18627 states have internal predecessors, (90454), 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 19:15:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18628 states to 18628 states and 90454 transitions. [2022-03-15 19:15:59,832 INFO L78 Accepts]: Start accepts. Automaton has 18628 states and 90454 transitions. Word has length 31 [2022-03-15 19:15:59,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:15:59,832 INFO L470 AbstractCegarLoop]: Abstraction has 18628 states and 90454 transitions. [2022-03-15 19:15:59,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.387096774193548) internal successors, (322), 31 states have internal predecessors, (322), 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 19:15:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 18628 states and 90454 transitions. [2022-03-15 19:16:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 19:16:00,002 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:16:00,002 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2022-03-15 19:16:00,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 19:16:00,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:00,203 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:16:00,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:16:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash -157229081, now seen corresponding path program 11 times [2022-03-15 19:16:00,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:16:00,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217022969] [2022-03-15 19:16:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:16:00,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:16:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:16:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:00,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:16:00,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217022969] [2022-03-15 19:16:00,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217022969] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:16:00,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525812811] [2022-03-15 19:16:00,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:16:00,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:00,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:16:00,273 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:16:00,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 19:16:00,356 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 19:16:00,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:16:00,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:16:00,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:16:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:00,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:16:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:00,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525812811] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:16:00,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:16:00,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-03-15 19:16:00,486 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [150708790] [2022-03-15 19:16:00,486 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:16:00,489 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:16:00,875 INFO L252 McrAutomatonBuilder]: Finished intersection with 1234 states and 4144 transitions. [2022-03-15 19:16:00,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:16:12,133 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [517816#(or (<= ~M~0 2) (< 3 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)), 517799#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 517808#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 517798#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 517809#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 517804#(or (<= ~M~0 2) (< 3 ~M~0)), 517797#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 517802#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 517796#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 517806#(or (<= ~M~0 2) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (< 3 ~M~0)), 517803#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 517795#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 517793#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 517800#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 517811#(and (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)) (or (<= ~M~0 3) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0))), 517813#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 517807#(or (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 517814#(and (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))) (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (= thread3Thread1of1ForFork1_~i~2 0))), 517815#(or (<= ~M~0 2) (< 3 ~M~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 517792#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 517812#(and (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2)))), 517801#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 517810#(and (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)) (or (<= ~M~0 3) (< thread1Thread1of1ForFork2_~i~0 ~M~0))), 517794#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 517805#(or (<= ~M~0 2) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (< 3 ~M~0))] [2022-03-15 19:16:12,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 19:16:12,133 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:16:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 19:16:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1502, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 19:16:12,134 INFO L87 Difference]: Start difference. First operand 18628 states and 90454 transitions. Second operand has 36 states, 36 states have (on average 10.333333333333334) internal successors, (372), 36 states have internal predecessors, (372), 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 19:16:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:16:14,937 INFO L93 Difference]: Finished difference Result 46848 states and 218916 transitions. [2022-03-15 19:16:14,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-03-15 19:16:14,938 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.333333333333334) internal successors, (372), 36 states have internal predecessors, (372), 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 32 [2022-03-15 19:16:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:16:15,143 INFO L225 Difference]: With dead ends: 46848 [2022-03-15 19:16:15,144 INFO L226 Difference]: Without dead ends: 46618 [2022-03-15 19:16:15,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1424 GetRequests, 1261 SyntacticMatches, 48 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4339 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2565, Invalid=11007, Unknown=0, NotChecked=0, Total=13572 [2022-03-15 19:16:15,145 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 984 mSDsluCounter, 3637 mSDsCounter, 0 mSdLazyCounter, 3940 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 3940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:16:15,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 783 Invalid, 4130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 3940 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 19:16:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46618 states. [2022-03-15 19:16:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46618 to 21566. [2022-03-15 19:16:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21566 states, 21565 states have (on average 4.918247159749594) internal successors, (106062), 21565 states have internal predecessors, (106062), 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 19:16:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21566 states to 21566 states and 106062 transitions. [2022-03-15 19:16:16,265 INFO L78 Accepts]: Start accepts. Automaton has 21566 states and 106062 transitions. Word has length 32 [2022-03-15 19:16:16,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:16:16,265 INFO L470 AbstractCegarLoop]: Abstraction has 21566 states and 106062 transitions. [2022-03-15 19:16:16,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.333333333333334) internal successors, (372), 36 states have internal predecessors, (372), 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 19:16:16,265 INFO L276 IsEmpty]: Start isEmpty. Operand 21566 states and 106062 transitions. [2022-03-15 19:16:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 19:16:16,317 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:16:16,317 INFO L514 BasicCegarLoop]: trace histogram [4, 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] [2022-03-15 19:16:16,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 19:16:16,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:16,534 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:16:16,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:16:16,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1234086719, now seen corresponding path program 12 times [2022-03-15 19:16:16,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:16:16,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336915520] [2022-03-15 19:16:16,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:16:16,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:16:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:16:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:16,634 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:16:16,634 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336915520] [2022-03-15 19:16:16,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336915520] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:16:16,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701933849] [2022-03-15 19:16:16,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:16:16,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:16,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:16:16,636 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:16:16,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 19:16:16,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:16:16,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:16:16,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:16:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:16:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:16,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:16:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:16,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701933849] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:16:16,871 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:16:16,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-03-15 19:16:16,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1772895421] [2022-03-15 19:16:16,871 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:16:16,875 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:16:17,367 INFO L252 McrAutomatonBuilder]: Finished intersection with 1218 states and 4088 transitions. [2022-03-15 19:16:17,368 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:16:28,916 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 30 new interpolants: [608242#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608226#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 608235#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 608254#(or (< 4 ~M~0) (<= ~M~0 3) (= thread3Thread1of1ForFork1_~i~2 0)), 608246#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608229#(or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608252#(and (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= 4 ~M~0))), 608249#(or (< 4 ~M~0) (<= ~M~0 3) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608236#(or (< 4 ~M~0) (<= ~M~0 3)), 608253#(and (or (<= 4 ~M~0) (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))) (or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0)))), 608241#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608232#(or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608225#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 608238#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 608234#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 608247#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608251#(and (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= 4 ~M~0))), 608248#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 608245#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608240#(or (< 4 ~M~0) (<= ~M~0 3) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 608231#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608237#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 608244#(or (< 4 ~M~0) (<= ~M~0 3) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 608233#(and (or (<= 4 ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)) (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 608230#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 608239#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 608228#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 608227#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 608250#(and (or (<= 4 ~M~0) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)) (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 608243#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0)))] [2022-03-15 19:16:28,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 19:16:28,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:16:28,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 19:16:28,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1837, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 19:16:28,917 INFO L87 Difference]: Start difference. First operand 21566 states and 106062 transitions. Second operand has 41 states, 41 states have (on average 10.048780487804878) internal successors, (412), 41 states have internal predecessors, (412), 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 19:16:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:16:34,501 INFO L93 Difference]: Finished difference Result 78288 states and 381454 transitions. [2022-03-15 19:16:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-15 19:16:34,501 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 10.048780487804878) internal successors, (412), 41 states have internal predecessors, (412), 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 32 [2022-03-15 19:16:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:16:34,857 INFO L225 Difference]: With dead ends: 78288 [2022-03-15 19:16:34,857 INFO L226 Difference]: Without dead ends: 78288 [2022-03-15 19:16:34,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1516 GetRequests, 1330 SyntacticMatches, 12 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11194 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4889, Invalid=25911, Unknown=0, NotChecked=0, Total=30800 [2022-03-15 19:16:34,859 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 929 mSDsluCounter, 6002 mSDsCounter, 0 mSdLazyCounter, 6386 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 6682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 6386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:16:34,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 1326 Invalid, 6682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 6386 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 19:16:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78288 states. [2022-03-15 19:16:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78288 to 28994. [2022-03-15 19:16:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28994 states, 28993 states have (on average 5.064705273686752) internal successors, (146841), 28993 states have internal predecessors, (146841), 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 19:16:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28994 states to 28994 states and 146841 transitions. [2022-03-15 19:16:36,739 INFO L78 Accepts]: Start accepts. Automaton has 28994 states and 146841 transitions. Word has length 32 [2022-03-15 19:16:36,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:16:36,740 INFO L470 AbstractCegarLoop]: Abstraction has 28994 states and 146841 transitions. [2022-03-15 19:16:36,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.048780487804878) internal successors, (412), 41 states have internal predecessors, (412), 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 19:16:36,741 INFO L276 IsEmpty]: Start isEmpty. Operand 28994 states and 146841 transitions. [2022-03-15 19:16:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 19:16:36,974 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:16:36,974 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:16:36,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 19:16:37,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:37,192 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:16:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:16:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -322410393, now seen corresponding path program 13 times [2022-03-15 19:16:37,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:16:37,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831360364] [2022-03-15 19:16:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:16:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:16:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:16:37,305 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:37,305 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:16:37,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831360364] [2022-03-15 19:16:37,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831360364] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:16:37,305 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986254207] [2022-03-15 19:16:37,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:16:37,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:37,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:16:37,306 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:16:37,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 19:16:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:16:37,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:16:37,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:16:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:16:37,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:16:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:16:37,559 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986254207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:16:37,559 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:16:37,559 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-03-15 19:16:37,559 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [129883930] [2022-03-15 19:16:37,559 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:16:37,562 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:16:37,959 INFO L252 McrAutomatonBuilder]: Finished intersection with 1154 states and 3850 transitions. [2022-03-15 19:16:37,959 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:16:46,862 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 24 new interpolants: [745139#(<= thread3Thread1of1ForFork1_~i~2 2), 745133#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 745128#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 745131#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 745138#(<= ~M~0 2), 745148#(or (<= ~M~0 1) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< 2 ~M~0)), 745129#(or (<= ~M~0 1) (< 2 ~M~0)), 745134#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 745135#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0)), 745149#(or (<= ~M~0 1) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< 2 ~M~0)), 745146#(or (<= ~M~0 1) (< 2 ~M~0) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 745142#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 745126#(< thread3Thread1of1ForFork1_~i~2 ~M~0), 745140#(<= thread3Thread1of1ForFork1_~i~2 1), 745132#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 745141#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 745147#(or (<= ~M~0 1) (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< 2 ~M~0)), 745130#(or (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 745136#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 745137#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 745144#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 745127#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 745143#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= ~M~0 thread1Thread1of1ForFork2_~i~0)), 745145#(= thread3Thread1of1ForFork1_~i~2 0)] [2022-03-15 19:16:46,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 19:16:46,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:16:46,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 19:16:46,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1796, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 19:16:46,863 INFO L87 Difference]: Start difference. First operand 28994 states and 146841 transitions. Second operand has 35 states, 35 states have (on average 10.342857142857143) internal successors, (362), 35 states have internal predecessors, (362), 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 19:16:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:16:48,484 INFO L93 Difference]: Finished difference Result 42300 states and 203660 transitions. [2022-03-15 19:16:48,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 19:16:48,484 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 10.342857142857143) internal successors, (362), 35 states have internal predecessors, (362), 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 32 [2022-03-15 19:16:48,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:16:48,649 INFO L225 Difference]: With dead ends: 42300 [2022-03-15 19:16:48,649 INFO L226 Difference]: Without dead ends: 42146 [2022-03-15 19:16:48,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1166 SyntacticMatches, 24 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2666 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1214, Invalid=6096, Unknown=0, NotChecked=0, Total=7310 [2022-03-15 19:16:48,650 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 489 mSDsluCounter, 2846 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 3294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:16:48,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 592 Invalid, 3294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:16:48,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42146 states. [2022-03-15 19:16:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42146 to 28646. [2022-03-15 19:16:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28646 states, 28645 states have (on average 5.0391691394658755) internal successors, (144347), 28645 states have internal predecessors, (144347), 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 19:16:49,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28646 states to 28646 states and 144347 transitions. [2022-03-15 19:16:49,598 INFO L78 Accepts]: Start accepts. Automaton has 28646 states and 144347 transitions. Word has length 32 [2022-03-15 19:16:49,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:16:49,598 INFO L470 AbstractCegarLoop]: Abstraction has 28646 states and 144347 transitions. [2022-03-15 19:16:49,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.342857142857143) internal successors, (362), 35 states have internal predecessors, (362), 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 19:16:49,599 INFO L276 IsEmpty]: Start isEmpty. Operand 28646 states and 144347 transitions. [2022-03-15 19:16:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 19:16:49,669 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:16:49,669 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:16:49,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 19:16:49,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:49,885 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:16:49,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:16:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1933673461, now seen corresponding path program 3 times [2022-03-15 19:16:49,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:16:49,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946882709] [2022-03-15 19:16:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:16:49,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:16:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:16:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:49,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:16:49,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946882709] [2022-03-15 19:16:49,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946882709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:16:49,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386353626] [2022-03-15 19:16:49,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:16:49,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:49,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:16:49,946 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:16:49,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 19:16:50,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:16:50,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:16:50,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:16:50,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:16:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-03-15 19:16:50,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 19:16:50,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386353626] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:16:50,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 19:16:50,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-03-15 19:16:50,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1214879299] [2022-03-15 19:16:50,093 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:16:50,096 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:16:50,491 INFO L252 McrAutomatonBuilder]: Finished intersection with 804 states and 2486 transitions. [2022-03-15 19:16:50,491 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:16:55,009 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:16:55,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 19:16:55,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:16:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 19:16:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:16:55,011 INFO L87 Difference]: Start difference. First operand 28646 states and 144347 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 19:16:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:16:55,284 INFO L93 Difference]: Finished difference Result 37412 states and 180798 transitions. [2022-03-15 19:16:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:16:55,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 32 [2022-03-15 19:16:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:16:55,423 INFO L225 Difference]: With dead ends: 37412 [2022-03-15 19:16:55,423 INFO L226 Difference]: Without dead ends: 36942 [2022-03-15 19:16:55,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:16:55,424 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:16:55,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 10 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:16:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36942 states. [2022-03-15 19:16:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36942 to 31034. [2022-03-15 19:16:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31034 states, 31033 states have (on average 5.037508458737473) internal successors, (156329), 31033 states have internal predecessors, (156329), 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 19:16:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31034 states to 31034 states and 156329 transitions. [2022-03-15 19:16:56,608 INFO L78 Accepts]: Start accepts. Automaton has 31034 states and 156329 transitions. Word has length 32 [2022-03-15 19:16:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:16:56,608 INFO L470 AbstractCegarLoop]: Abstraction has 31034 states and 156329 transitions. [2022-03-15 19:16:56,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 19:16:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 31034 states and 156329 transitions. [2022-03-15 19:16:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:16:56,701 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:16:56,701 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:16:56,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 19:16:56,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:56,908 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:16:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:16:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash 973888316, now seen corresponding path program 14 times [2022-03-15 19:16:56,910 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:16:56,910 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015084020] [2022-03-15 19:16:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:16:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:16:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:16:57,021 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:57,022 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:16:57,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015084020] [2022-03-15 19:16:57,022 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015084020] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:16:57,022 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021941221] [2022-03-15 19:16:57,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:16:57,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:16:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:16:57,024 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:16:57,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 19:16:57,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:16:57,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:16:57,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 19:16:57,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:16:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:57,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:16:57,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:16:57,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021941221] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:16:57,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:16:57,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 5] total 14 [2022-03-15 19:16:57,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [77121971] [2022-03-15 19:16:57,577 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:16:57,581 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:16:57,979 INFO L252 McrAutomatonBuilder]: Finished intersection with 1410 states and 4777 transitions. [2022-03-15 19:16:57,980 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:11,940 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [944655#(and (<= (+ 2 ~counter1~0) ~counter2~0) (< ~counter2~0 (+ 3 ~counter1~0))), 944654#(and (<= (+ ~counter1~0 1) ~counter2~0) (< ~counter2~0 (+ 2 ~counter1~0))), 944656#(and (<= (+ 3 ~counter1~0) ~counter2~0) (< ~counter2~0 (+ ~counter1~0 4))), 944657#(and (< ~counter2~0 (+ 5 ~counter1~0)) (<= (+ ~counter1~0 4) ~counter2~0))] [2022-03-15 19:17:11,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:17:11,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:11,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:17:11,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:17:11,941 INFO L87 Difference]: Start difference. First operand 31034 states and 156329 transitions. Second operand has 15 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 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 19:17:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:13,048 INFO L93 Difference]: Finished difference Result 59857 states and 292092 transitions. [2022-03-15 19:17:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 19:17:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 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 33 [2022-03-15 19:17:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:13,583 INFO L225 Difference]: With dead ends: 59857 [2022-03-15 19:17:13,583 INFO L226 Difference]: Without dead ends: 59722 [2022-03-15 19:17:13,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1449 GetRequests, 1388 SyntacticMatches, 43 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-03-15 19:17:13,584 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 97 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:13,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 345 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:17:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59722 states. [2022-03-15 19:17:14,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59722 to 39132. [2022-03-15 19:17:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39132 states, 39131 states have (on average 5.041399402008637) internal successors, (197275), 39131 states have internal predecessors, (197275), 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 19:17:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39132 states to 39132 states and 197275 transitions. [2022-03-15 19:17:15,409 INFO L78 Accepts]: Start accepts. Automaton has 39132 states and 197275 transitions. Word has length 33 [2022-03-15 19:17:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:15,409 INFO L470 AbstractCegarLoop]: Abstraction has 39132 states and 197275 transitions. [2022-03-15 19:17:15,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 12.857142857142858) internal successors, (180), 14 states have internal predecessors, (180), 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 19:17:15,409 INFO L276 IsEmpty]: Start isEmpty. Operand 39132 states and 197275 transitions. [2022-03-15 19:17:15,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:17:15,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:15,524 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2022-03-15 19:17:15,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:15,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:15,741 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:17:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1943921962, now seen corresponding path program 15 times [2022-03-15 19:17:15,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:15,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084238010] [2022-03-15 19:17:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:15,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:15,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084238010] [2022-03-15 19:17:15,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084238010] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:15,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956211860] [2022-03-15 19:17:15,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:17:15,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:15,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:15,864 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:15,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 19:17:15,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 19:17:15,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:15,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:17:15,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:16,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:16,227 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956211860] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:16,227 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:16,227 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 26 [2022-03-15 19:17:16,227 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [80890444] [2022-03-15 19:17:16,227 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:16,242 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:16,720 INFO L252 McrAutomatonBuilder]: Finished intersection with 1370 states and 4630 transitions. [2022-03-15 19:17:16,720 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:28,829 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 31 new interpolants: [1082997#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 1083013#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 1083010#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= thread3Thread1of1ForFork1_~i~2 (+ thread1Thread1of1ForFork2_~i~0 1))), 1083018#(or (<= (+ 3 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1083023#(or (<= ~M~0 2) (<= 5 ~M~0)), 1083021#(<= thread3Thread1of1ForFork1_~i~2 1), 1083011#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0)), 1083001#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1083004#(<= thread3Thread1of1ForFork1_~i~2 3), 1083000#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 1083008#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 1083016#(or (<= (+ 5 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1083003#(or (< 5 ~M~0) (<= ~M~0 4)), 1083015#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= thread3Thread1of1ForFork1_~i~2 thread1Thread1of1ForFork2_~i~0)), 1083022#(= thread3Thread1of1ForFork1_~i~2 0), 1083017#(or (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (<= (+ thread3Thread1of1ForFork1_~i~2 4) thread1Thread1of1ForFork2_~i~0)), 1083019#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1083027#(or (<= ~M~0 2) (<= 1 thread1Thread1of1ForFork2_~i~0)), 1083009#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= thread3Thread1of1ForFork1_~i~2 thread1Thread1of1ForFork2_~i~0)), 1083002#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0)), 1082999#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 1083020#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1083026#(or (<= ~M~0 2) (<= 2 thread1Thread1of1ForFork2_~i~0)), 1082998#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 1083007#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 1083014#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0)), 1083024#(or (<= ~M~0 2) (<= 4 thread1Thread1of1ForFork2_~i~0)), 1083012#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 1083025#(or (<= 3 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 2)), 1083006#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1083005#(<= thread3Thread1of1ForFork1_~i~2 2)] [2022-03-15 19:17:28,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 19:17:28,829 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 19:17:28,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2846, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 19:17:28,830 INFO L87 Difference]: Start difference. First operand 39132 states and 197275 transitions. Second operand has 43 states, 43 states have (on average 10.162790697674419) internal successors, (437), 43 states have internal predecessors, (437), 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 19:17:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:45,709 INFO L93 Difference]: Finished difference Result 197554 states and 906527 transitions. [2022-03-15 19:17:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2022-03-15 19:17:45,718 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 10.162790697674419) internal successors, (437), 43 states have internal predecessors, (437), 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 33 [2022-03-15 19:17:45,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:48,002 INFO L225 Difference]: With dead ends: 197554 [2022-03-15 19:17:48,002 INFO L226 Difference]: Without dead ends: 197554 [2022-03-15 19:17:48,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1926 GetRequests, 1614 SyntacticMatches, 0 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37211 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=13484, Invalid=84798, Unknown=0, NotChecked=0, Total=98282 [2022-03-15 19:17:48,005 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 1592 mSDsluCounter, 10593 mSDsCounter, 0 mSdLazyCounter, 11061 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 2070 SdHoareTripleChecker+Invalid, 11373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 11061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:48,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 2070 Invalid, 11373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 11061 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-03-15 19:17:48,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197554 states. [2022-03-15 19:17:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197554 to 34962. [2022-03-15 19:17:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34962 states, 34961 states have (on average 4.859157346757816) internal successors, (169881), 34961 states have internal predecessors, (169881), 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 19:17:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34962 states to 34962 states and 169881 transitions. [2022-03-15 19:17:52,241 INFO L78 Accepts]: Start accepts. Automaton has 34962 states and 169881 transitions. Word has length 33 [2022-03-15 19:17:52,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:52,241 INFO L470 AbstractCegarLoop]: Abstraction has 34962 states and 169881 transitions. [2022-03-15 19:17:52,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 10.162790697674419) internal successors, (437), 43 states have internal predecessors, (437), 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 19:17:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 34962 states and 169881 transitions. [2022-03-15 19:17:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:17:52,342 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:52,342 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:52,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:52,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-15 19:17:52,559 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:17:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:52,560 INFO L85 PathProgramCache]: Analyzing trace with hash 701637665, now seen corresponding path program 16 times [2022-03-15 19:17:52,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:52,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438327820] [2022-03-15 19:17:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:52,641 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:52,641 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438327820] [2022-03-15 19:17:52,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438327820] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:52,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296327534] [2022-03-15 19:17:52,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:17:52,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:52,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:52,643 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:52,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 19:17:52,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:17:52,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:52,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 19:17:52,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:52,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:52,895 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:52,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296327534] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:52,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:52,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-03-15 19:17:52,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [243062516] [2022-03-15 19:17:52,896 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:52,899 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:53,513 INFO L252 McrAutomatonBuilder]: Finished intersection with 1602 states and 5466 transitions. [2022-03-15 19:17:53,514 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:06,266 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 36 new interpolants: [1351511#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1351529#(or (< 4 ~M~0) (<= ~M~0 3) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 1351513#(or (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 1351526#(and (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 4)) (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)))), 1351524#(and (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)) (or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 4)) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0))), 1351521#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 1351502#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 1351508#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 1351498#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 1351512#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (< 4 ~M~0) (<= ~M~0 3)), 1351496#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 1351517#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1351505#(or (< 4 ~M~0) (<= ~M~0 3)), 1351528#(and (or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))) (or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 4)) (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0)))), 1351501#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 1351523#(and (or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 4)) (< thread1Thread1of1ForFork2_~i~0 ~M~0)) (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 1351509#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 1351510#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 1351518#(or (< 4 ~M~0) (<= ~M~0 3) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1351516#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1351499#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1351530#(or (< 4 ~M~0) (<= ~M~0 3) (= thread3Thread1of1ForFork1_~i~2 0)), 1351495#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 1351500#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 1351497#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 1351525#(and (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 4)) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)))), 1351520#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 1351514#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1351515#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 1351519#(or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 1351504#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1351503#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 1351527#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2)) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1351522#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 1351507#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 1351506#(or (< 4 ~M~0) (<= ~M~0 3) (<= ~M~0 thread3Thread1of1ForFork1_~i~2))] [2022-03-15 19:18:06,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 19:18:06,267 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 19:18:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=2721, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 19:18:06,268 INFO L87 Difference]: Start difference. First operand 34962 states and 169881 transitions. Second operand has 49 states, 49 states have (on average 10.122448979591837) internal successors, (496), 49 states have internal predecessors, (496), 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 19:18:10,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:10,951 INFO L93 Difference]: Finished difference Result 88264 states and 412174 transitions. [2022-03-15 19:18:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-15 19:18:10,952 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 10.122448979591837) internal successors, (496), 49 states have internal predecessors, (496), 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 34 [2022-03-15 19:18:10,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:11,565 INFO L225 Difference]: With dead ends: 88264 [2022-03-15 19:18:11,565 INFO L226 Difference]: Without dead ends: 87984 [2022-03-15 19:18:11,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1856 GetRequests, 1687 SyntacticMatches, 10 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7704 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4726, Invalid=21034, Unknown=0, NotChecked=0, Total=25760 [2022-03-15 19:18:11,567 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 1206 mSDsluCounter, 5411 mSDsCounter, 0 mSdLazyCounter, 5793 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 6036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 5793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:11,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 1211 Invalid, 6036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 5793 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 19:18:11,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87984 states. [2022-03-15 19:18:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87984 to 39684. [2022-03-15 19:18:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39684 states, 39683 states have (on average 4.908449461986241) internal successors, (194782), 39683 states have internal predecessors, (194782), 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 19:18:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39684 states to 39684 states and 194782 transitions. [2022-03-15 19:18:13,411 INFO L78 Accepts]: Start accepts. Automaton has 39684 states and 194782 transitions. Word has length 34 [2022-03-15 19:18:13,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:13,411 INFO L470 AbstractCegarLoop]: Abstraction has 39684 states and 194782 transitions. [2022-03-15 19:18:13,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 10.122448979591837) internal successors, (496), 49 states have internal predecessors, (496), 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 19:18:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 39684 states and 194782 transitions. [2022-03-15 19:18:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:18:13,516 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:13,516 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:13,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:13,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 19:18:13,732 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:18:13,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1678789255, now seen corresponding path program 17 times [2022-03-15 19:18:13,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:13,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683653173] [2022-03-15 19:18:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:13,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:13,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:13,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683653173] [2022-03-15 19:18:13,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683653173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:13,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791525936] [2022-03-15 19:18:13,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:18:13,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:13,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:13,876 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:13,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 19:18:13,962 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:18:13,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:13,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 19:18:13,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:14,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:14,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791525936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:14,131 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:14,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2022-03-15 19:18:14,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1682387559] [2022-03-15 19:18:14,131 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:14,135 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:14,875 INFO L252 McrAutomatonBuilder]: Finished intersection with 1586 states and 5410 transitions. [2022-03-15 19:18:14,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:36,437 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 42 new interpolants: [1519712#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519701#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0)), 1519718#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519725#(and (or (<= 5 ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)) (or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 1519698#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 1519699#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 1519726#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 1519714#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1519700#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1519732#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1519728#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0)), 1519731#(and (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= 5 ~M~0)) (or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (= thread3Thread1of1ForFork1_~i~2 0))), 1519716#(or (< 5 ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 4)), 1519705#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1519706#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1519722#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519697#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 1519734#(and (or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))) (or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= 5 ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0)))), 1519729#(and (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (= thread3Thread1of1ForFork1_~i~2 0)) (or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= 5 ~M~0))), 1519711#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519733#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0)), 1519723#(or (< 5 ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 4)), 1519708#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1519717#(or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519702#(or (< 5 ~M~0) (<= ~M~0 4)), 1519707#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 1519710#(or (< thread1Thread1of1ForFork2_~i~0 ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519713#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519720#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519715#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519727#(and (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (<= 5 ~M~0)) (or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0))), 1519735#(and (or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0) (= thread3Thread1of1ForFork1_~i~2 0)) (or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= 5 ~M~0))), 1519724#(or (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 1519719#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1519730#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0)), 1519703#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (< thread1Thread1of1ForFork2_~i~0 ~M~0)), 1519736#(or (< 5 ~M~0) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0) (<= ~M~0 4)), 1519704#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1519696#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 1519709#(or (< 5 ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0) (<= ~M~0 4)), 1519737#(or (< 5 ~M~0) (= thread3Thread1of1ForFork1_~i~2 0) (<= ~M~0 4)), 1519721#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0)))] [2022-03-15 19:18:36,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-15 19:18:36,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-15 19:18:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=3263, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 19:18:36,438 INFO L87 Difference]: Start difference. First operand 39684 states and 194782 transitions. Second operand has 55 states, 55 states have (on average 9.89090909090909) internal successors, (544), 55 states have internal predecessors, (544), 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 19:18:46,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:46,713 INFO L93 Difference]: Finished difference Result 169220 states and 835370 transitions. [2022-03-15 19:18:46,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2022-03-15 19:18:46,714 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 9.89090909090909) internal successors, (544), 55 states have internal predecessors, (544), 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 34 [2022-03-15 19:18:46,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:47,926 INFO L225 Difference]: With dead ends: 169220 [2022-03-15 19:18:47,926 INFO L226 Difference]: Without dead ends: 169220 [2022-03-15 19:18:47,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2038 GetRequests, 1760 SyntacticMatches, 14 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27643 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=10499, Invalid=59991, Unknown=0, NotChecked=0, Total=70490 [2022-03-15 19:18:47,929 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 1557 mSDsluCounter, 8334 mSDsCounter, 0 mSdLazyCounter, 8806 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 9358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 8806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:47,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 1827 Invalid, 9358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 8806 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-03-15 19:18:48,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169220 states. [2022-03-15 19:18:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169220 to 51774. [2022-03-15 19:18:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51774 states, 51773 states have (on average 5.032545921619377) internal successors, (260550), 51773 states have internal predecessors, (260550), 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 19:18:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51774 states to 51774 states and 260550 transitions. [2022-03-15 19:18:51,715 INFO L78 Accepts]: Start accepts. Automaton has 51774 states and 260550 transitions. Word has length 34 [2022-03-15 19:18:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:51,715 INFO L470 AbstractCegarLoop]: Abstraction has 51774 states and 260550 transitions. [2022-03-15 19:18:51,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 9.89090909090909) internal successors, (544), 55 states have internal predecessors, (544), 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 19:18:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 51774 states and 260550 transitions. [2022-03-15 19:18:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:18:52,173 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:52,174 INFO L514 BasicCegarLoop]: trace histogram [6, 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] [2022-03-15 19:18:52,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:52,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 19:18:52,390 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:18:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:52,391 INFO L85 PathProgramCache]: Analyzing trace with hash 2096902311, now seen corresponding path program 18 times [2022-03-15 19:18:52,392 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:52,392 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154291903] [2022-03-15 19:18:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:52,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:52,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:52,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154291903] [2022-03-15 19:18:52,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154291903] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:52,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878887867] [2022-03-15 19:18:52,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:18:52,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:52,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:52,470 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:52,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 19:18:52,595 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 19:18:52,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:52,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:18:52,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:18:52,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 19:18:52,795 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878887867] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:52,795 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:52,795 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 27 [2022-03-15 19:18:52,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [189665373] [2022-03-15 19:18:52,795 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:52,799 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:53,305 INFO L252 McrAutomatonBuilder]: Finished intersection with 1522 states and 5172 transitions. [2022-03-15 19:18:53,305 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:19:09,703 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 35 new interpolants: [1793364#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 1793356#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 1793376#(<= thread3Thread1of1ForFork1_~i~2 1), 1793368#(or (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1793363#(or (<= ~M~0 2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< 3 ~M~0)), 1793347#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1793359#(or (<= ~M~0 2) (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< 3 ~M~0)), 1793357#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 1793350#(or (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1793372#(or (<= ~M~0 2) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (< 3 ~M~0)), 1793361#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= ~M~0 thread1Thread1of1ForFork2_~i~0)), 1793367#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 2) (< 3 ~M~0)), 1793353#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 1793366#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1793355#(or (<= ~M~0 2) (< 3 ~M~0) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 1793375#(<= thread3Thread1of1ForFork1_~i~2 2), 1793373#(<= ~M~0 3), 1793352#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 1793348#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 1793343#(< thread3Thread1of1ForFork1_~i~2 ~M~0), 1793371#(or (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1793351#(or (<= ~M~0 2) (< 3 ~M~0)), 1793360#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread1Thread1of1ForFork2_~i~0)), 1793344#(or (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1793369#(or (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (< (+ thread3Thread1of1ForFork1_~i~2 1) ~M~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 1793374#(<= thread3Thread1of1ForFork1_~i~2 3), 1793358#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 1793377#(= thread3Thread1of1ForFork1_~i~2 0), 1793354#(or (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= (+ 2 ~M~0) thread1Thread1of1ForFork2_~i~0)), 1793346#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1793349#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 1793345#(or (<= (+ ~M~0 1) thread1Thread1of1ForFork2_~i~0) (< thread3Thread1of1ForFork1_~i~2 ~M~0)), 1793370#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 1793365#(or (< (+ 2 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1)) (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1))), 1793362#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (< (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0))] [2022-03-15 19:19:09,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 19:19:09,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:19:09,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 19:19:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=3321, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 19:19:09,704 INFO L87 Difference]: Start difference. First operand 51774 states and 260550 transitions. Second operand has 48 states, 48 states have (on average 10.125) internal successors, (486), 48 states have internal predecessors, (486), 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 19:19:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:19:13,965 INFO L93 Difference]: Finished difference Result 83496 states and 401828 transitions. [2022-03-15 19:19:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 19:19:13,965 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 10.125) internal successors, (486), 48 states have internal predecessors, (486), 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 34 [2022-03-15 19:19:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:19:14,404 INFO L225 Difference]: With dead ends: 83496 [2022-03-15 19:19:14,404 INFO L226 Difference]: Without dead ends: 83222 [2022-03-15 19:19:14,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1688 GetRequests, 1543 SyntacticMatches, 24 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5276 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2448, Invalid=12558, Unknown=0, NotChecked=0, Total=15006 [2022-03-15 19:19:14,405 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 741 mSDsluCounter, 4647 mSDsCounter, 0 mSdLazyCounter, 5054 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 5201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 5054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:19:14,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 972 Invalid, 5201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 5054 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 19:19:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83222 states. [2022-03-15 19:19:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83222 to 50498. [2022-03-15 19:19:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50498 states, 50497 states have (on average 5.013743390696477) internal successors, (253179), 50497 states have internal predecessors, (253179), 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 19:19:16,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50498 states to 50498 states and 253179 transitions. [2022-03-15 19:19:16,855 INFO L78 Accepts]: Start accepts. Automaton has 50498 states and 253179 transitions. Word has length 34 [2022-03-15 19:19:16,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:19:16,856 INFO L470 AbstractCegarLoop]: Abstraction has 50498 states and 253179 transitions. [2022-03-15 19:19:16,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 10.125) internal successors, (486), 48 states have internal predecessors, (486), 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 19:19:16,856 INFO L276 IsEmpty]: Start isEmpty. Operand 50498 states and 253179 transitions. [2022-03-15 19:19:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:19:17,015 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:19:17,015 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:19:17,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 19:19:17,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:19:17,228 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:19:17,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:19:17,228 INFO L85 PathProgramCache]: Analyzing trace with hash -285210159, now seen corresponding path program 4 times [2022-03-15 19:19:17,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:19:17,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455755520] [2022-03-15 19:19:17,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:19:17,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:19:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:19:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:19:17,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:19:17,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455755520] [2022-03-15 19:19:17,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455755520] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:19:17,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837721300] [2022-03-15 19:19:17,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:19:17,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:19:17,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:19:17,321 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:19:17,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 19:19:17,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:19:17,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:19:17,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:19:17,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:19:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:19:17,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:19:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:19:17,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837721300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:19:17,630 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:19:17,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 19:19:17,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [823314508] [2022-03-15 19:19:17,630 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:19:17,634 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:19:18,038 INFO L252 McrAutomatonBuilder]: Finished intersection with 790 states and 2364 transitions. [2022-03-15 19:19:18,038 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:19:31,957 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 47 new interpolants: [1978278#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 1978281#(or (<= ~N~0 (+ 2 |thread4Thread1of1ForFork3_~i~3#1|)) (< (+ 3 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 1978299#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 1978293#(or (< 3 ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (<= ~N~0 2)), 1978280#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 1978294#(or (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (<= ~N~0 2)), 1978302#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (< 3 ~N~0) (<= ~N~0 2)), 1978282#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 1978317#(<= |thread2Thread1of1ForFork0_~i~1#1| 1), 1978308#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 1) (< 2 ~N~0)), 1978310#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 1) (< 2 ~N~0)), 1978286#(or (<= ~N~0 (+ 2 |thread4Thread1of1ForFork3_~i~3#1|)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (< (+ 3 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 1978290#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 1978306#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (<= ~N~0 2)), 1978287#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 1978292#(and (or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (= |thread4Thread1of1ForFork3_~i~3#1| 0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)) (or (<= ~N~0 (+ 2 |thread4Thread1of1ForFork3_~i~3#1|)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|))), 1978275#(or (< 3 ~N~0) (<= ~N~0 2)), 1978289#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 1978297#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 1978313#(or (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 1) (< 2 ~N~0)), 1978314#(or (= |thread4Thread1of1ForFork3_~i~3#1| 0) (<= ~N~0 1) (< 2 ~N~0)), 1978304#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1))), 1978312#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 1) (< 2 ~N~0)), 1978315#(= |thread4Thread1of1ForFork3_~i~3#1| 0), 1978272#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 1978307#(or (<= ~N~0 1) (< 2 ~N~0)), 1978279#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 1978301#(or (<= ~N~0 (+ 2 |thread4Thread1of1ForFork3_~i~3#1|)) (< (+ 3 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 1978273#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1))), 1978311#(or (<= ~N~0 (+ 2 |thread4Thread1of1ForFork3_~i~3#1|)) (< (+ 3 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 1) (< 2 ~N~0)), 1978284#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 1978296#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 2)), 1978277#(< |thread2Thread1of1ForFork0_~i~1#1| ~N~0), 1978316#(<= |thread2Thread1of1ForFork0_~i~1#1| 2), 1978298#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 1978305#(and (or (<= ~N~0 (+ 2 |thread4Thread1of1ForFork3_~i~3#1|)) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)) (or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (= |thread4Thread1of1ForFork3_~i~3#1| 0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0))), 1978271#(< |thread4Thread1of1ForFork3_~i~3#1| ~N~0), 1978288#(or (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 1978309#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 1) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0) (< 2 ~N~0)), 1978285#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 1978291#(and (or (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (<= ~N~0 2)) (or (= |thread4Thread1of1ForFork3_~i~3#1| 0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0))), 1978303#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 1978283#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 1978300#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1))), 1978274#(or (<= ~N~0 (+ 2 |thread4Thread1of1ForFork3_~i~3#1|)) (< (+ 3 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0)), 1978295#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< 3 ~N~0) (<= ~N~0 2)), 1978276#(<= ~N~0 2)] [2022-03-15 19:19:31,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 19:19:31,958 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:19:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 19:19:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=3889, Unknown=0, NotChecked=0, Total=4422 [2022-03-15 19:19:31,959 INFO L87 Difference]: Start difference. First operand 50498 states and 253179 transitions. Second operand has 56 states, 56 states have (on average 7.821428571428571) internal successors, (438), 56 states have internal predecessors, (438), 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 19:19:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:19:36,697 INFO L93 Difference]: Finished difference Result 108940 states and 534407 transitions. [2022-03-15 19:19:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-03-15 19:19:36,697 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.821428571428571) internal successors, (438), 56 states have internal predecessors, (438), 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 34 [2022-03-15 19:19:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:19:37,707 INFO L225 Difference]: With dead ends: 108940 [2022-03-15 19:19:37,707 INFO L226 Difference]: Without dead ends: 107762 [2022-03-15 19:19:37,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 851 SyntacticMatches, 3 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7255 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4161, Invalid=20019, Unknown=0, NotChecked=0, Total=24180 [2022-03-15 19:19:37,714 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 2091 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 4493 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 4987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 4493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:19:37,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2091 Valid, 671 Invalid, 4987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 4493 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 19:19:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107762 states. [2022-03-15 19:19:40,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107762 to 69872. [2022-03-15 19:19:40,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69872 states, 69871 states have (on average 5.1102460248171635) internal successors, (357058), 69871 states have internal predecessors, (357058), 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 19:19:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69872 states to 69872 states and 357058 transitions. [2022-03-15 19:19:41,034 INFO L78 Accepts]: Start accepts. Automaton has 69872 states and 357058 transitions. Word has length 34 [2022-03-15 19:19:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:19:41,034 INFO L470 AbstractCegarLoop]: Abstraction has 69872 states and 357058 transitions. [2022-03-15 19:19:41,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.821428571428571) internal successors, (438), 56 states have internal predecessors, (438), 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 19:19:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 69872 states and 357058 transitions. [2022-03-15 19:19:41,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 19:19:41,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:19:41,579 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:19:41,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 19:19:41,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 19:19:41,795 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:19:41,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:19:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1366208376, now seen corresponding path program 5 times [2022-03-15 19:19:41,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:19:41,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694180626] [2022-03-15 19:19:41,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:19:41,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:19:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:19:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:19:41,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:19:41,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694180626] [2022-03-15 19:19:41,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694180626] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:19:41,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572432145] [2022-03-15 19:19:41,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:19:41,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:19:41,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:19:41,896 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:19:41,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 19:19:42,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:19:42,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:19:42,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:19:42,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:19:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:19:42,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:19:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:19:42,210 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572432145] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:19:42,210 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:19:42,210 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-03-15 19:19:42,210 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1591108056] [2022-03-15 19:19:42,211 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:19:42,215 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:19:42,587 INFO L252 McrAutomatonBuilder]: Finished intersection with 1040 states and 3272 transitions. [2022-03-15 19:19:42,588 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:19:56,388 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 40 new interpolants: [2227514#(<= ~N~0 2), 2227525#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (< 3 ~N~0) (<= ~N~0 2)), 2227494#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 2227520#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (<= ~N~0 1) (< 2 ~N~0)), 2227515#(<= |thread4Thread1of1ForFork3_~i~3#1| 2), 2227505#(or (<= ~N~0 1) (< 2 ~N~0)), 2227522#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 3) ~N~0) (<= ~N~0 1) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 2)) (< 2 ~N~0)), 2227510#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 3) ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 2)) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227498#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227524#(<= |thread4Thread1of1ForFork3_~i~3#1| 1), 2227496#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227502#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 2227493#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 2227489#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0)), 2227519#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 3) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 2))), 2227516#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 2) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1))), 2227508#(or (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 1) (< 2 ~N~0)), 2227509#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 3) ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 2))), 2227513#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1))), 2227517#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227501#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 2227503#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227490#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 3) ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 2))), 2227512#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< 3 ~N~0) (<= ~N~0 2)), 2227495#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227499#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1))), 2227504#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|)), 2227507#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (<= ~N~0 1) (< 2 ~N~0)), 2227506#(or (<= ~N~0 1) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0) (< 2 ~N~0)), 2227523#(or (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (< 3 ~N~0) (<= ~N~0 2) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227526#(= |thread4Thread1of1ForFork3_~i~3#1| 0), 2227500#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1)) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 2227521#(or (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (<= ~N~0 1) (< 2 ~N~0)), 2227497#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread4Thread1of1ForFork3_~i~3#1|) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|) (< (+ |thread4Thread1of1ForFork3_~i~3#1| 1) ~N~0)), 2227487#(< |thread2Thread1of1ForFork0_~i~1#1| ~N~0), 2227511#(or (< 3 ~N~0) (<= ~N~0 2)), 2227492#(or (< |thread4Thread1of1ForFork3_~i~3#1| ~N~0) (< |thread2Thread1of1ForFork0_~i~1#1| ~N~0)), 2227491#(< |thread4Thread1of1ForFork3_~i~3#1| ~N~0), 2227518#(or (< (+ 2 |thread4Thread1of1ForFork3_~i~3#1|) ~N~0) (<= ~N~0 (+ |thread2Thread1of1ForFork0_~i~1#1| 1)) (<= ~N~0 (+ |thread4Thread1of1ForFork3_~i~3#1| 1))), 2227488#(or (< (+ |thread2Thread1of1ForFork0_~i~1#1| 1) ~N~0) (<= ~N~0 |thread2Thread1of1ForFork0_~i~1#1|))] [2022-03-15 19:19:56,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 19:19:56,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:19:56,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 19:19:56,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=3089, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 19:19:56,394 INFO L87 Difference]: Start difference. First operand 69872 states and 357058 transitions. Second operand has 49 states, 49 states have (on average 8.73469387755102) internal successors, (428), 49 states have internal predecessors, (428), 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 19:20:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:20:00,647 INFO L93 Difference]: Finished difference Result 113080 states and 554020 transitions. [2022-03-15 19:20:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-15 19:20:00,647 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.73469387755102) internal successors, (428), 49 states have internal predecessors, (428), 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 34 [2022-03-15 19:20:00,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:20:01,538 INFO L225 Difference]: With dead ends: 113080 [2022-03-15 19:20:01,538 INFO L226 Difference]: Without dead ends: 112792 [2022-03-15 19:20:01,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1254 GetRequests, 1108 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6912 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3665, Invalid=17797, Unknown=0, NotChecked=0, Total=21462 [2022-03-15 19:20:01,551 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 1627 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 4736 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 5067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 4736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:20:01,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1627 Valid, 610 Invalid, 5067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 4736 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 19:20:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112792 states. [2022-03-15 19:20:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112792 to 68008. [2022-03-15 19:20:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68008 states, 68007 states have (on average 5.059229196994427) internal successors, (344063), 68007 states have internal predecessors, (344063), 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 19:20:04,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68008 states to 68008 states and 344063 transitions. [2022-03-15 19:20:04,691 INFO L78 Accepts]: Start accepts. Automaton has 68008 states and 344063 transitions. Word has length 34 [2022-03-15 19:20:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:20:04,691 INFO L470 AbstractCegarLoop]: Abstraction has 68008 states and 344063 transitions. [2022-03-15 19:20:04,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.73469387755102) internal successors, (428), 49 states have internal predecessors, (428), 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 19:20:04,691 INFO L276 IsEmpty]: Start isEmpty. Operand 68008 states and 344063 transitions. [2022-03-15 19:20:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-15 19:20:05,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:20:05,279 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:20:05,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 19:20:05,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:20:05,491 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:20:05,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:20:05,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1078730294, now seen corresponding path program 19 times [2022-03-15 19:20:05,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:20:05,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187892446] [2022-03-15 19:20:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:20:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:20:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:20:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:20:05,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:20:05,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187892446] [2022-03-15 19:20:05,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187892446] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:20:05,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286979937] [2022-03-15 19:20:05,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:20:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:20:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:20:05,685 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:20:05,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 19:20:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:20:05,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-15 19:20:05,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:20:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:20:05,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:20:06,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:20:06,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286979937] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:20:06,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:20:06,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 6] total 17 [2022-03-15 19:20:06,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [259025370] [2022-03-15 19:20:06,124 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:20:06,127 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:20:06,769 INFO L252 McrAutomatonBuilder]: Finished intersection with 1802 states and 6190 transitions. [2022-03-15 19:20:06,769 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:20:26,329 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [2477108#(and (<= (+ 2 ~counter1~0) ~counter2~0) (< ~counter2~0 (+ 3 ~counter1~0))), 2477111#(and (< ~counter2~0 (+ 6 ~counter1~0)) (<= (+ 5 ~counter1~0) ~counter2~0)), 2477107#(and (<= (+ ~counter1~0 1) ~counter2~0) (< ~counter2~0 (+ 2 ~counter1~0))), 2477110#(and (< ~counter2~0 (+ 5 ~counter1~0)) (<= (+ ~counter1~0 4) ~counter2~0)), 2477109#(and (<= (+ 3 ~counter1~0) ~counter2~0) (< ~counter2~0 (+ ~counter1~0 4)))] [2022-03-15 19:20:26,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 19:20:26,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:20:26,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 19:20:26,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:20:26,330 INFO L87 Difference]: Start difference. First operand 68008 states and 344063 transitions. Second operand has 18 states, 17 states have (on average 12.882352941176471) internal successors, (219), 17 states have internal predecessors, (219), 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 19:20:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:20:28,580 INFO L93 Difference]: Finished difference Result 130917 states and 642663 transitions. [2022-03-15 19:20:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 19:20:28,581 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 12.882352941176471) internal successors, (219), 17 states have internal predecessors, (219), 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 35 [2022-03-15 19:20:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:20:29,389 INFO L225 Difference]: With dead ends: 130917 [2022-03-15 19:20:29,390 INFO L226 Difference]: Without dead ends: 130672 [2022-03-15 19:20:29,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1845 GetRequests, 1772 SyntacticMatches, 51 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:20:29,391 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 122 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 3052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:20:29,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 501 Invalid, 3052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 19:20:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130672 states. [2022-03-15 19:20:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130672 to 82438. [2022-03-15 19:20:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82438 states, 82437 states have (on average 5.0627509492097) internal successors, (417358), 82437 states have internal predecessors, (417358), 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 19:20:33,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82438 states to 82438 states and 417358 transitions. [2022-03-15 19:20:33,746 INFO L78 Accepts]: Start accepts. Automaton has 82438 states and 417358 transitions. Word has length 35 [2022-03-15 19:20:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:20:33,746 INFO L470 AbstractCegarLoop]: Abstraction has 82438 states and 417358 transitions. [2022-03-15 19:20:33,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 12.882352941176471) internal successors, (219), 17 states have internal predecessors, (219), 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 19:20:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 82438 states and 417358 transitions. [2022-03-15 19:20:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-15 19:20:34,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:20:34,037 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:20:34,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 19:20:34,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-03-15 19:20:34,251 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:20:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:20:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -770220806, now seen corresponding path program 20 times [2022-03-15 19:20:34,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:20:34,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107767066] [2022-03-15 19:20:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:20:34,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:20:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:20:34,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:20:34,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:20:34,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107767066] [2022-03-15 19:20:34,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107767066] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:20:34,340 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133543514] [2022-03-15 19:20:34,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:20:34,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:20:34,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:20:34,341 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:20:34,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 19:20:34,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:20:34,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:20:34,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 19:20:34,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:20:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:20:34,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:20:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:20:34,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133543514] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:20:34,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:20:34,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 27 [2022-03-15 19:20:34,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [167046712] [2022-03-15 19:20:34,658 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:20:34,662 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:20:35,369 INFO L252 McrAutomatonBuilder]: Finished intersection with 1762 states and 6043 transitions. [2022-03-15 19:20:35,370 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:20:52,362 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 43 new interpolants: [2773145#(or (< (+ 3 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ 2 thread1Thread1of1ForFork2_~i~0))), 2773149#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 2773162#(or (<= thread3Thread1of1ForFork1_~i~2 (+ 2 thread1Thread1of1ForFork2_~i~0)) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 2773177#(<= thread3Thread1of1ForFork1_~i~2 1), 2773176#(<= thread3Thread1of1ForFork1_~i~2 2), 2773163#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= thread3Thread1of1ForFork1_~i~2 (+ thread1Thread1of1ForFork2_~i~0 1))), 2773137#(or (<= ~M~0 thread1Thread1of1ForFork2_~i~0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~M~0)), 2773144#(or (< (+ 2 thread1Thread1of1ForFork2_~i~0) ~M~0) (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 1))), 2773141#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 2773166#(or (<= ~M~0 5) (< 6 ~M~0)), 2773148#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 thread3Thread1of1ForFork1_~i~2)), 2773150#(or (<= (+ 3 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 2773155#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= thread3Thread1of1ForFork1_~i~2 thread1Thread1of1ForFork2_~i~0)), 2773159#(or (<= (+ thread3Thread1of1ForFork1_~i~2 4) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 2773157#(or (<= (+ 6 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 2773153#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 2773174#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 2773140#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ thread3Thread1of1ForFork1_~i~2 4) ~M~0)), 2773151#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= thread3Thread1of1ForFork1_~i~2 thread1Thread1of1ForFork2_~i~0)), 2773147#(or (<= ~M~0 (+ thread1Thread1of1ForFork2_~i~0 4)) (< (+ 5 thread1Thread1of1ForFork2_~i~0) ~M~0)), 2773175#(or (<= ~M~0 3) (<= 1 thread1Thread1of1ForFork2_~i~0)), 2773170#(or (<= 5 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 3)), 2773168#(<= thread3Thread1of1ForFork1_~i~2 3), 2773156#(or (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2))), 2773164#(or (<= ~M~0 (+ 5 thread1Thread1of1ForFork2_~i~0)) (< (+ 6 thread1Thread1of1ForFork2_~i~0) ~M~0)), 2773139#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0)), 2773154#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= thread3Thread1of1ForFork1_~i~2 (+ thread1Thread1of1ForFork2_~i~0 1))), 2773136#(< thread1Thread1of1ForFork2_~i~0 ~M~0), 2773160#(or (<= (+ 3 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 2773173#(or (<= ~M~0 3) (<= 2 thread1Thread1of1ForFork2_~i~0)), 2773172#(or (<= 3 thread1Thread1of1ForFork2_~i~0) (<= ~M~0 3)), 2773158#(or (<= (+ 5 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 2773165#(or (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (<= thread3Thread1of1ForFork1_~i~2 thread1Thread1of1ForFork2_~i~0)), 2773169#(or (<= ~M~0 3) (<= 6 ~M~0)), 2773138#(or (<= ~M~0 thread3Thread1of1ForFork1_~i~2) (<= (+ 3 thread3Thread1of1ForFork1_~i~2) ~M~0)), 2773152#(or (<= ~M~0 (+ thread3Thread1of1ForFork1_~i~2 1)) (<= (+ thread3Thread1of1ForFork1_~i~2 1) thread1Thread1of1ForFork2_~i~0)), 2773171#(or (<= ~M~0 3) (<= 4 thread1Thread1of1ForFork2_~i~0)), 2773146#(or (< (+ thread1Thread1of1ForFork2_~i~0 4) ~M~0) (<= ~M~0 (+ 3 thread1Thread1of1ForFork2_~i~0))), 2773161#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) thread1Thread1of1ForFork2_~i~0) (<= ~M~0 (+ 3 thread3Thread1of1ForFork1_~i~2))), 2773167#(<= thread3Thread1of1ForFork1_~i~2 4), 2773143#(or (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)) (<= (+ thread3Thread1of1ForFork1_~i~2 4) thread1Thread1of1ForFork2_~i~0)), 2773178#(= thread3Thread1of1ForFork1_~i~2 0), 2773142#(or (<= (+ 5 thread3Thread1of1ForFork1_~i~2) ~M~0) (<= ~M~0 (+ 2 thread3Thread1of1ForFork1_~i~2)))] [2022-03-15 19:20:52,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-15 19:20:52,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:20:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-15 19:20:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=4368, Unknown=0, NotChecked=0, Total=4830 [2022-03-15 19:20:52,364 INFO L87 Difference]: Start difference. First operand 82438 states and 417358 transitions. Second operand has 57 states, 57 states have (on average 10.0) internal successors, (570), 57 states have internal predecessors, (570), 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 19:21:28,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:21:28,055 INFO L93 Difference]: Finished difference Result 472458 states and 2157533 transitions. [2022-03-15 19:21:28,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 415 states. [2022-03-15 19:21:28,056 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 10.0) internal successors, (570), 57 states have internal predecessors, (570), 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 35 [2022-03-15 19:21:28,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:21:32,116 INFO L225 Difference]: With dead ends: 472458 [2022-03-15 19:21:32,117 INFO L226 Difference]: Without dead ends: 472458 [2022-03-15 19:21:32,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2602 GetRequests, 2137 SyntacticMatches, 0 SemanticMatches, 465 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87121 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=28855, Invalid=188767, Unknown=0, NotChecked=0, Total=217622 [2022-03-15 19:21:32,123 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 2493 mSDsluCounter, 15555 mSDsCounter, 0 mSdLazyCounter, 16210 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2493 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 16699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 16210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-03-15 19:21:32,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2493 Valid, 2978 Invalid, 16699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 16210 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-03-15 19:21:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472458 states. [2022-03-15 19:21:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472458 to 74080. [2022-03-15 19:21:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74080 states, 74079 states have (on average 4.890954251542272) internal successors, (362317), 74079 states have internal predecessors, (362317), 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 19:21:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74080 states to 74080 states and 362317 transitions. [2022-03-15 19:21:43,698 INFO L78 Accepts]: Start accepts. Automaton has 74080 states and 362317 transitions. Word has length 35 [2022-03-15 19:21:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:21:43,698 INFO L470 AbstractCegarLoop]: Abstraction has 74080 states and 362317 transitions. [2022-03-15 19:21:43,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 10.0) internal successors, (570), 57 states have internal predecessors, (570), 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 19:21:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 74080 states and 362317 transitions. [2022-03-15 19:21:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 19:21:44,024 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:21:44,024 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:21:44,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 19:21:44,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:21:44,240 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-03-15 19:21:44,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:21:44,240 INFO L85 PathProgramCache]: Analyzing trace with hash -343228313, now seen corresponding path program 21 times [2022-03-15 19:21:44,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:21:44,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599484474] [2022-03-15 19:21:44,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:21:44,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:21:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:21:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:21:44,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:21:44,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599484474] [2022-03-15 19:21:44,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599484474] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:21:44,329 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821517965] [2022-03-15 19:21:44,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:21:44,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:21:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:21:44,340 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:21:44,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 19:21:44,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 19:21:44,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:21:44,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:21:44,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:21:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:21:44,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:21:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:21:44,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821517965] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:21:44,701 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:21:44,701 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2022-03-15 19:21:44,701 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [195842493] [2022-03-15 19:21:44,701 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:21:44,705 INFO L249 McrAutomatonBuilder]: Started intersection.