/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 20:31:42,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 20:31:42,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 20:31:42,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 20:31:42,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 20:31:42,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 20:31:42,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 20:31:42,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 20:31:42,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 20:31:42,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 20:31:42,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 20:31:42,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 20:31:42,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 20:31:42,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 20:31:42,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 20:31:42,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 20:31:42,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 20:31:42,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 20:31:42,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 20:31:42,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 20:31:42,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 20:31:42,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 20:31:42,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 20:31:42,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 20:31:42,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 20:31:42,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 20:31:42,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 20:31:42,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 20:31:42,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 20:31:42,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 20:31:42,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 20:31:42,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 20:31:42,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 20:31:42,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 20:31:42,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 20:31:42,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 20:31:42,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 20:31:42,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 20:31:42,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 20:31:42,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 20:31:42,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 20:31:42,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 20:31:42,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 20:31:42,957 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 20:31:42,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 20:31:42,958 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 20:31:42,958 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 20:31:42,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 20:31:42,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 20:31:42,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 20:31:42,959 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 20:31:42,959 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 20:31:42,960 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 20:31:42,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 20:31:42,960 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 20:31:42,961 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 20:31:42,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 20:31:42,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 20:31:42,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 20:31:42,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 20:31:42,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 20:31:42,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 20:31:42,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:31:42,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 20:31:42,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 20:31:42,963 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 20:31:42,964 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 20:31:42,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 20:31:42,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 20:31:42,964 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 20:31:43,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 20:31:43,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 20:31:43,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 20:31:43,425 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 20:31:43,428 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 20:31:43,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2021-10-13 20:31:43,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa554853/8c330c037f8e40bdbfc7f0a61fa59b04/FLAGb5240a41d [2021-10-13 20:31:44,228 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 20:31:44,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2021-10-13 20:31:44,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa554853/8c330c037f8e40bdbfc7f0a61fa59b04/FLAGb5240a41d [2021-10-13 20:31:44,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4fa554853/8c330c037f8e40bdbfc7f0a61fa59b04 [2021-10-13 20:31:44,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 20:31:44,623 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 20:31:44,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 20:31:44,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 20:31:44,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 20:31:44,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:44" (1/1) ... [2021-10-13 20:31:44,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba20a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:44, skipping insertion in model container [2021-10-13 20:31:44,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:31:44" (1/1) ... [2021-10-13 20:31:44,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 20:31:44,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:31:44,942 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2021-10-13 20:31:44,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:31:44,972 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 20:31:44,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:31:45,010 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2021-10-13 20:31:45,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:31:45,036 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 20:31:45,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2021-10-13 20:31:45,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:31:45,156 INFO L208 MainTranslator]: Completed translation [2021-10-13 20:31:45,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45 WrapperNode [2021-10-13 20:31:45,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 20:31:45,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 20:31:45,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 20:31:45,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 20:31:45,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 20:31:45,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 20:31:45,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 20:31:45,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 20:31:45,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 20:31:45,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 20:31:45,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 20:31:45,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 20:31:45,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (1/1) ... [2021-10-13 20:31:45,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:31:45,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:31:45,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 20:31:45,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 20:31:45,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 20:31:45,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 20:31:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 20:31:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 20:31:45,519 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 20:31:45,519 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 20:31:45,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 20:31:45,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 20:31:45,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 20:31:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 20:31:45,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 20:31:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 20:31:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 20:31:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 20:31:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 20:31:45,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 20:31:45,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 20:31:45,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 20:31:45,549 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 20:31:47,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 20:31:47,692 INFO L299 CfgBuilder]: Removed 53 assume(true) statements. [2021-10-13 20:31:47,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:31:47 BoogieIcfgContainer [2021-10-13 20:31:47,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 20:31:47,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 20:31:47,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 20:31:47,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 20:31:47,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:31:44" (1/3) ... [2021-10-13 20:31:47,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648223be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:31:47, skipping insertion in model container [2021-10-13 20:31:47,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:31:45" (2/3) ... [2021-10-13 20:31:47,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648223be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:31:47, skipping insertion in model container [2021-10-13 20:31:47,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:31:47" (3/3) ... [2021-10-13 20:31:47,705 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2021-10-13 20:31:47,712 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 20:31:47,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2021-10-13 20:31:47,713 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 20:31:47,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,760 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,761 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,761 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,762 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,762 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,762 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,762 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,762 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,763 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,763 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,763 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,763 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,764 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,764 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,765 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,765 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,765 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,765 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,766 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,767 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,767 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,771 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,771 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,772 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,773 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,774 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,775 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,775 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,776 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,776 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,777 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,777 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,777 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,779 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,779 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,779 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,780 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,780 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,780 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,780 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,781 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,781 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,781 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,781 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,782 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,782 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,782 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,782 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,782 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,783 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,783 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,783 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,783 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,783 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,784 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,784 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,784 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,784 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,785 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,785 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,785 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,785 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,785 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,786 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,786 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,786 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,786 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,787 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,787 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,787 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,787 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,787 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,787 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,788 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,788 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,788 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,788 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,789 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,789 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,789 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,789 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,790 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,790 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,790 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,791 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,791 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,791 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,791 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,791 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,791 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,792 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,792 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,792 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,792 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,793 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,793 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,793 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,793 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,794 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,794 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,795 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,795 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,795 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,796 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,796 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,797 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,797 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,797 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,797 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,797 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,798 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,798 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,798 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,798 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,798 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,799 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,799 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,803 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,804 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,804 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,804 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,805 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,806 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,806 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,806 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,806 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,809 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,809 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,809 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,809 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,810 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,810 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,810 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,810 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,810 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,811 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,811 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,811 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,811 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,816 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,816 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,817 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,818 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,818 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,820 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,821 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~ret18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,821 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,821 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~post16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,821 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,821 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,822 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,822 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,822 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,822 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,822 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,823 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,823 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:31:47,831 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 20:31:47,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 20:31:47,895 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 20:31:47,895 INFO L340 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2021-10-13 20:31:47,929 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 20:31:47,943 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 210 transitions, 452 flow [2021-10-13 20:31:47,951 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 210 transitions, 452 flow [2021-10-13 20:31:47,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 208 places, 210 transitions, 452 flow [2021-10-13 20:31:48,045 INFO L129 PetriNetUnfolder]: 15/206 cut-off events. [2021-10-13 20:31:48,046 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 20:31:48,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 206 events. 15/206 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 210 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2021-10-13 20:31:48,063 INFO L116 LiptonReduction]: Number of co-enabled transitions 3608 [2021-10-13 20:32:20,891 INFO L131 LiptonReduction]: Checked pairs total: 7231 [2021-10-13 20:32:20,891 INFO L133 LiptonReduction]: Total number of compositions: 222 [2021-10-13 20:32:20,907 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 63 transitions, 158 flow [2021-10-13 20:32:21,142 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3750 states, 3346 states have (on average 4.950986252241482) internal successors, (16566), 3749 states have internal predecessors, (16566), 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) [2021-10-13 20:32:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand has 3750 states, 3346 states have (on average 4.950986252241482) internal successors, (16566), 3749 states have internal predecessors, (16566), 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) [2021-10-13 20:32:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:32:21,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:21,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:32:21,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:32:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:21,186 INFO L82 PathProgramCache]: Analyzing trace with hash 34748, now seen corresponding path program 1 times [2021-10-13 20:32:21,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:21,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486552097] [2021-10-13 20:32:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:32:21,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:21,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:21,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:21,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 20:32:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:32:21,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:32:21,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:21,971 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:32:21,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 20:32:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:23,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:23,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:23,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486552097] [2021-10-13 20:32:23,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486552097] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:32:23,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:32:23,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:32:23,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094329717] [2021-10-13 20:32:23,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:32:23,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:32:23,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:32:23,096 INFO L87 Difference]: Start difference. First operand has 3750 states, 3346 states have (on average 4.950986252241482) internal successors, (16566), 3749 states have internal predecessors, (16566), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 20:32:23,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:23,421 INFO L93 Difference]: Finished difference Result 3748 states and 16564 transitions. [2021-10-13 20:32:23,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:32:23,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-10-13 20:32:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:23,504 INFO L225 Difference]: With dead ends: 3748 [2021-10-13 20:32:23,505 INFO L226 Difference]: Without dead ends: 3748 [2021-10-13 20:32:23,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:32:23,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2021-10-13 20:32:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3748. [2021-10-13 20:32:23,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3748 states, 3346 states have (on average 4.950388523610281) internal successors, (16564), 3747 states have internal predecessors, (16564), 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) [2021-10-13 20:32:23,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3748 states to 3748 states and 16564 transitions. [2021-10-13 20:32:23,918 INFO L78 Accepts]: Start accepts. Automaton has 3748 states and 16564 transitions. Word has length 2 [2021-10-13 20:32:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:23,919 INFO L470 AbstractCegarLoop]: Abstraction has 3748 states and 16564 transitions. [2021-10-13 20:32:23,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 20:32:23,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3748 states and 16564 transitions. [2021-10-13 20:32:23,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:32:23,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:23,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:32:23,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 20:32:24,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:24,123 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:32:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:24,125 INFO L82 PathProgramCache]: Analyzing trace with hash 34750, now seen corresponding path program 1 times [2021-10-13 20:32:24,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:24,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334954664] [2021-10-13 20:32:24,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:32:24,130 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:24,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:24,131 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:24,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 20:32:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:32:24,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:32:24,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:24,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:32:24,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:32:24,703 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:32:24,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:32:24,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:24,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:24,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:24,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:24,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334954664] [2021-10-13 20:32:24,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334954664] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:32:24,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:32:24,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:32:24,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832912837] [2021-10-13 20:32:24,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:32:24,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:32:24,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:24,924 INFO L87 Difference]: Start difference. First operand 3748 states and 16564 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:32:25,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:25,920 INFO L93 Difference]: Finished difference Result 7495 states and 33130 transitions. [2021-10-13 20:32:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:32:25,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 2 [2021-10-13 20:32:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:26,061 INFO L225 Difference]: With dead ends: 7495 [2021-10-13 20:32:26,061 INFO L226 Difference]: Without dead ends: 7495 [2021-10-13 20:32:26,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:26,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7495 states. [2021-10-13 20:32:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7495 to 3750. [2021-10-13 20:32:26,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3750 states, 3348 states have (on average 4.949820788530466) internal successors, (16572), 3749 states have internal predecessors, (16572), 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) [2021-10-13 20:32:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3750 states to 3750 states and 16572 transitions. [2021-10-13 20:32:26,417 INFO L78 Accepts]: Start accepts. Automaton has 3750 states and 16572 transitions. Word has length 2 [2021-10-13 20:32:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:26,418 INFO L470 AbstractCegarLoop]: Abstraction has 3750 states and 16572 transitions. [2021-10-13 20:32:26,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:32:26,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3750 states and 16572 transitions. [2021-10-13 20:32:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:32:26,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:26,419 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:32:26,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:26,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:26,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:32:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:26,636 INFO L82 PathProgramCache]: Analyzing trace with hash 34904, now seen corresponding path program 1 times [2021-10-13 20:32:26,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:26,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [819070644] [2021-10-13 20:32:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:32:26,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:26,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:26,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:26,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 20:32:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:32:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:32:26,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:27,425 INFO L354 Elim1Store]: treesize reduction 367, result has 14.1 percent of original size [2021-10-13 20:32:27,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 141 [2021-10-13 20:32:27,454 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-13 20:32:27,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1078 treesize of output 1036 [2021-10-13 20:32:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:33,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:33,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:33,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [819070644] [2021-10-13 20:32:33,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [819070644] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:32:33,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:32:33,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:32:33,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841233233] [2021-10-13 20:32:33,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:32:33,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:33,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:32:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:33,815 INFO L87 Difference]: Start difference. First operand 3750 states and 16572 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:32:34,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:34,242 INFO L93 Difference]: Finished difference Result 3124 states and 13444 transitions. [2021-10-13 20:32:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:32:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 2 [2021-10-13 20:32:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:34,267 INFO L225 Difference]: With dead ends: 3124 [2021-10-13 20:32:34,268 INFO L226 Difference]: Without dead ends: 3124 [2021-10-13 20:32:34,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2021-10-13 20:32:34,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 3124. [2021-10-13 20:32:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 2804 states have (on average 4.794579172610557) internal successors, (13444), 3123 states have internal predecessors, (13444), 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) [2021-10-13 20:32:34,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 13444 transitions. [2021-10-13 20:32:34,477 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 13444 transitions. Word has length 2 [2021-10-13 20:32:34,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:34,478 INFO L470 AbstractCegarLoop]: Abstraction has 3124 states and 13444 transitions. [2021-10-13 20:32:34,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:32:34,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 13444 transitions. [2021-10-13 20:32:34,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 20:32:34,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:34,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 20:32:34,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:34,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:34,683 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:32:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:34,685 INFO L82 PathProgramCache]: Analyzing trace with hash 34905, now seen corresponding path program 1 times [2021-10-13 20:32:34,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:34,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042939470] [2021-10-13 20:32:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:32:34,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:34,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:34,687 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:34,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 20:32:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:32:34,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:32:34,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:35,129 INFO L354 Elim1Store]: treesize reduction 507, result has 13.0 percent of original size [2021-10-13 20:32:35,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 989 treesize of output 976 [2021-10-13 20:32:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:40,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:40,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:40,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042939470] [2021-10-13 20:32:40,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042939470] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:32:40,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:32:40,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:32:40,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529627299] [2021-10-13 20:32:40,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:32:40,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:40,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:32:40,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:40,697 INFO L87 Difference]: Start difference. First operand 3124 states and 13444 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:32:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:40,984 INFO L93 Difference]: Finished difference Result 2498 states and 10316 transitions. [2021-10-13 20:32:40,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:32:40,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 2 [2021-10-13 20:32:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:41,003 INFO L225 Difference]: With dead ends: 2498 [2021-10-13 20:32:41,003 INFO L226 Difference]: Without dead ends: 2498 [2021-10-13 20:32:41,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2021-10-13 20:32:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2498. [2021-10-13 20:32:41,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2260 states have (on average 4.564601769911504) internal successors, (10316), 2497 states have internal predecessors, (10316), 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) [2021-10-13 20:32:41,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 10316 transitions. [2021-10-13 20:32:41,110 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 10316 transitions. Word has length 2 [2021-10-13 20:32:41,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:41,111 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 10316 transitions. [2021-10-13 20:32:41,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:32:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 10316 transitions. [2021-10-13 20:32:41,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:32:41,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:41,112 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 20:32:41,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:41,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:41,332 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:32:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:41,333 INFO L82 PathProgramCache]: Analyzing trace with hash 33556414, now seen corresponding path program 1 times [2021-10-13 20:32:41,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:41,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365229079] [2021-10-13 20:32:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:32:41,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:41,338 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:41,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 20:32:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:32:41,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:32:41,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:41,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:32:41,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:32:41,759 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:32:41,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:32:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:41,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:42,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:42,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:42,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365229079] [2021-10-13 20:32:42,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365229079] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:32:42,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:32:42,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 20:32:42,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803136476] [2021-10-13 20:32:42,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:32:42,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:42,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:32:42,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:32:42,424 INFO L87 Difference]: Start difference. First operand 2498 states and 10316 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-10-13 20:32:45,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:45,001 INFO L93 Difference]: Finished difference Result 14967 states and 61864 transitions. [2021-10-13 20:32:45,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 20:32:45,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 4 [2021-10-13 20:32:45,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:45,150 INFO L225 Difference]: With dead ends: 14967 [2021-10-13 20:32:45,150 INFO L226 Difference]: Without dead ends: 14967 [2021-10-13 20:32:45,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 812.8ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:32:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14967 states. [2021-10-13 20:32:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14967 to 2502. [2021-10-13 20:32:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 2264 states have (on average 4.560070671378092) internal successors, (10324), 2501 states have internal predecessors, (10324), 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) [2021-10-13 20:32:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 10324 transitions. [2021-10-13 20:32:45,651 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 10324 transitions. Word has length 4 [2021-10-13 20:32:45,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:45,652 INFO L470 AbstractCegarLoop]: Abstraction has 2502 states and 10324 transitions. [2021-10-13 20:32:45,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-10-13 20:32:45,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 10324 transitions. [2021-10-13 20:32:45,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:32:45,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:45,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 20:32:45,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 20:32:45,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:32:45,869 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:32:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:32:45,870 INFO L82 PathProgramCache]: Analyzing trace with hash 33571376, now seen corresponding path program 1 times [2021-10-13 20:32:45,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:32:45,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354025110] [2021-10-13 20:32:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:32:45,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:32:45,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:32:45,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:32:45,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 20:32:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:32:46,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:32:46,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:32:46,430 INFO L354 Elim1Store]: treesize reduction 507, result has 13.0 percent of original size [2021-10-13 20:32:46,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 582 treesize of output 625 [2021-10-13 20:32:59,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:59,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:32:59,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:32:59,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:32:59,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354025110] [2021-10-13 20:32:59,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354025110] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:32:59,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:32:59,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:32:59,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824837257] [2021-10-13 20:32:59,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:32:59,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:32:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:32:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:59,406 INFO L87 Difference]: Start difference. First operand 2502 states and 10324 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 20:32:59,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:32:59,701 INFO L93 Difference]: Finished difference Result 2372 states and 9814 transitions. [2021-10-13 20:32:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:32:59,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 4 [2021-10-13 20:32:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:32:59,717 INFO L225 Difference]: With dead ends: 2372 [2021-10-13 20:32:59,717 INFO L226 Difference]: Without dead ends: 2372 [2021-10-13 20:32:59,718 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:32:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2021-10-13 20:32:59,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2372. [2021-10-13 20:32:59,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2164 states have (on average 4.535120147874307) internal successors, (9814), 2371 states have internal predecessors, (9814), 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) [2021-10-13 20:32:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 9814 transitions. [2021-10-13 20:32:59,817 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 9814 transitions. Word has length 4 [2021-10-13 20:32:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:32:59,817 INFO L470 AbstractCegarLoop]: Abstraction has 2372 states and 9814 transitions. [2021-10-13 20:32:59,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 20:32:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 9814 transitions. [2021-10-13 20:32:59,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:32:59,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:32:59,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 20:32:59,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:00,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:00,032 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:33:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:00,033 INFO L82 PathProgramCache]: Analyzing trace with hash 33571344, now seen corresponding path program 1 times [2021-10-13 20:33:00,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:00,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207167857] [2021-10-13 20:33:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:33:00,035 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:00,036 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:00,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 20:33:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:33:00,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:33:00,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:00,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:33:00,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:33:00,662 INFO L354 Elim1Store]: treesize reduction 357, result has 18.7 percent of original size [2021-10-13 20:33:00,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 91 [2021-10-13 20:33:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:00,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:01,074 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:01,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207167857] [2021-10-13 20:33:01,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207167857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:33:01,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:33:01,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 20:33:01,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441486393] [2021-10-13 20:33:01,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:33:01,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:01,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:33:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:33:01,077 INFO L87 Difference]: Start difference. First operand 2372 states and 9814 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-10-13 20:33:02,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:02,899 INFO L93 Difference]: Finished difference Result 4267 states and 18076 transitions. [2021-10-13 20:33:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:33:02,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 4 [2021-10-13 20:33:02,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:02,927 INFO L225 Difference]: With dead ends: 4267 [2021-10-13 20:33:02,927 INFO L226 Difference]: Without dead ends: 4267 [2021-10-13 20:33:02,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 363.1ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:33:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2021-10-13 20:33:03,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 3500. [2021-10-13 20:33:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3500 states, 3292 states have (on average 4.872721749696233) internal successors, (16041), 3499 states have internal predecessors, (16041), 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) [2021-10-13 20:33:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3500 states to 3500 states and 16041 transitions. [2021-10-13 20:33:03,101 INFO L78 Accepts]: Start accepts. Automaton has 3500 states and 16041 transitions. Word has length 4 [2021-10-13 20:33:03,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:03,101 INFO L470 AbstractCegarLoop]: Abstraction has 3500 states and 16041 transitions. [2021-10-13 20:33:03,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2021-10-13 20:33:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3500 states and 16041 transitions. [2021-10-13 20:33:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:33:03,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:03,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 20:33:03,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:03,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:03,317 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:33:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash 33571345, now seen corresponding path program 1 times [2021-10-13 20:33:03,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:03,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791690387] [2021-10-13 20:33:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:33:03,319 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:03,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:03,320 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:03,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 20:33:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:33:03,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:33:03,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:03,709 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:33:03,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 20:33:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:04,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:04,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:04,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791690387] [2021-10-13 20:33:04,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791690387] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:33:04,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:33:04,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 20:33:04,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358260718] [2021-10-13 20:33:04,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:33:04,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:04,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:33:04,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:33:04,456 INFO L87 Difference]: Start difference. First operand 3500 states and 16041 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:33:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:04,622 INFO L93 Difference]: Finished difference Result 1805 states and 7665 transitions. [2021-10-13 20:33:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:33:04,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-13 20:33:04,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:04,630 INFO L225 Difference]: With dead ends: 1805 [2021-10-13 20:33:04,630 INFO L226 Difference]: Without dead ends: 1805 [2021-10-13 20:33:04,630 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:33:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2021-10-13 20:33:04,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1805. [2021-10-13 20:33:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1805 states, 1742 states have (on average 4.400114810562572) internal successors, (7665), 1804 states have internal predecessors, (7665), 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) [2021-10-13 20:33:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 7665 transitions. [2021-10-13 20:33:04,697 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 7665 transitions. Word has length 4 [2021-10-13 20:33:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:04,697 INFO L470 AbstractCegarLoop]: Abstraction has 1805 states and 7665 transitions. [2021-10-13 20:33:04,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-13 20:33:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 7665 transitions. [2021-10-13 20:33:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 20:33:04,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:04,698 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 20:33:04,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:04,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:04,911 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:33:04,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:04,912 INFO L82 PathProgramCache]: Analyzing trace with hash 33571378, now seen corresponding path program 1 times [2021-10-13 20:33:04,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:04,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469536100] [2021-10-13 20:33:04,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:33:04,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:04,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:04,914 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:04,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 20:33:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:33:05,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 20:33:05,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:05,529 INFO L354 Elim1Store]: treesize reduction 361, result has 15.5 percent of original size [2021-10-13 20:33:05,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 125 [2021-10-13 20:33:05,540 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 20:33:05,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 217 treesize of output 211 [2021-10-13 20:33:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:17,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:17,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:17,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469536100] [2021-10-13 20:33:17,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469536100] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:33:17,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:33:17,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:33:17,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536302771] [2021-10-13 20:33:17,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:33:17,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:17,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:33:17,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:33:17,487 INFO L87 Difference]: Start difference. First operand 1805 states and 7665 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 20:33:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:17,897 INFO L93 Difference]: Finished difference Result 1686 states and 7167 transitions. [2021-10-13 20:33:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:33:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 4 [2021-10-13 20:33:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:17,905 INFO L225 Difference]: With dead ends: 1686 [2021-10-13 20:33:17,905 INFO L226 Difference]: Without dead ends: 1686 [2021-10-13 20:33:17,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:33:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2021-10-13 20:33:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1686. [2021-10-13 20:33:17,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1633 states have (on average 4.388854868340478) internal successors, (7167), 1685 states have internal predecessors, (7167), 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) [2021-10-13 20:33:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 7167 transitions. [2021-10-13 20:33:17,965 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 7167 transitions. Word has length 4 [2021-10-13 20:33:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:17,966 INFO L470 AbstractCegarLoop]: Abstraction has 1686 states and 7167 transitions. [2021-10-13 20:33:17,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-10-13 20:33:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 7167 transitions. [2021-10-13 20:33:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 20:33:17,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:17,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 20:33:17,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:18,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:18,183 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:33:18,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:18,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2097618240, now seen corresponding path program 1 times [2021-10-13 20:33:18,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:18,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102284437] [2021-10-13 20:33:18,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:33:18,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:18,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:18,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:18,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 20:33:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:33:18,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:33:18,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:18,660 INFO L354 Elim1Store]: treesize reduction 355, result has 16.9 percent of original size [2021-10-13 20:33:18,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 110 [2021-10-13 20:33:18,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 165 [2021-10-13 20:33:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:32,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:32,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:32,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102284437] [2021-10-13 20:33:32,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102284437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:33:32,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:33:32,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:33:32,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824820918] [2021-10-13 20:33:32,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:33:32,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:32,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:33:32,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:33:32,777 INFO L87 Difference]: Start difference. First operand 1686 states and 7167 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 20:33:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:33,028 INFO L93 Difference]: Finished difference Result 1644 states and 7037 transitions. [2021-10-13 20:33:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:33:33,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 6 [2021-10-13 20:33:33,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:33,035 INFO L225 Difference]: With dead ends: 1644 [2021-10-13 20:33:33,036 INFO L226 Difference]: Without dead ends: 1644 [2021-10-13 20:33:33,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:33:33,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-10-13 20:33:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1644. [2021-10-13 20:33:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1599 states have (on average 4.4008755472170105) internal successors, (7037), 1643 states have internal predecessors, (7037), 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) [2021-10-13 20:33:33,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 7037 transitions. [2021-10-13 20:33:33,095 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 7037 transitions. Word has length 6 [2021-10-13 20:33:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:33,096 INFO L470 AbstractCegarLoop]: Abstraction has 1644 states and 7037 transitions. [2021-10-13 20:33:33,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 20:33:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 7037 transitions. [2021-10-13 20:33:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 20:33:33,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:33,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 20:33:33,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 20:33:33,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:33,309 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:33:33,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:33,310 INFO L82 PathProgramCache]: Analyzing trace with hash -2097618239, now seen corresponding path program 1 times [2021-10-13 20:33:33,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:33,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [568132899] [2021-10-13 20:33:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:33:33,312 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:33,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:33,313 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:33,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 20:33:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:33:33,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:33:33,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:33,733 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:33:33,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 85 treesize of output 136 [2021-10-13 20:33:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:45,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:45,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:45,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [568132899] [2021-10-13 20:33:45,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [568132899] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:33:45,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:33:45,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:33:45,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510650533] [2021-10-13 20:33:45,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:33:45,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:33:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:33:45,842 INFO L87 Difference]: Start difference. First operand 1644 states and 7037 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 20:33:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:33:45,955 INFO L93 Difference]: Finished difference Result 1602 states and 6907 transitions. [2021-10-13 20:33:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:33:45,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 6 [2021-10-13 20:33:45,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:33:45,962 INFO L225 Difference]: With dead ends: 1602 [2021-10-13 20:33:45,962 INFO L226 Difference]: Without dead ends: 1602 [2021-10-13 20:33:45,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:33:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2021-10-13 20:33:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 1602. [2021-10-13 20:33:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1565 states have (on average 4.4134185303514375) internal successors, (6907), 1601 states have internal predecessors, (6907), 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) [2021-10-13 20:33:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 6907 transitions. [2021-10-13 20:33:46,042 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 6907 transitions. Word has length 6 [2021-10-13 20:33:46,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:33:46,043 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 6907 transitions. [2021-10-13 20:33:46,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2021-10-13 20:33:46,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 6907 transitions. [2021-10-13 20:33:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 20:33:46,045 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:33:46,046 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-13 20:33:46,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 20:33:46,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:33:46,259 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:33:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:33:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2019493822, now seen corresponding path program 2 times [2021-10-13 20:33:46,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:33:46,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713154692] [2021-10-13 20:33:46,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:33:46,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:33:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:33:46,263 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:33:46,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 20:33:46,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:33:46,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:33:46,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 20:33:46,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:33:46,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:33:46,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:33:46,800 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:33:46,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:33:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:47,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:33:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:33:49,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:33:49,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713154692] [2021-10-13 20:33:49,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713154692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:33:49,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:33:49,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 20:33:49,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506356226] [2021-10-13 20:33:49,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:33:49,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:33:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:33:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:33:49,271 INFO L87 Difference]: Start difference. First operand 1602 states and 6907 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-13 20:34:00,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:00,382 INFO L93 Difference]: Finished difference Result 22319 states and 96506 transitions. [2021-10-13 20:34:00,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 20:34:00,384 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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 8 [2021-10-13 20:34:00,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:00,503 INFO L225 Difference]: With dead ends: 22319 [2021-10-13 20:34:00,503 INFO L226 Difference]: Without dead ends: 22319 [2021-10-13 20:34:00,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6437.7ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:34:00,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22319 states. [2021-10-13 20:34:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22319 to 1610. [2021-10-13 20:34:00,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1573 states have (on average 4.401144310235219) internal successors, (6923), 1609 states have internal predecessors, (6923), 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) [2021-10-13 20:34:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 6923 transitions. [2021-10-13 20:34:00,913 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 6923 transitions. Word has length 8 [2021-10-13 20:34:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:00,913 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 6923 transitions. [2021-10-13 20:34:00,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-13 20:34:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 6923 transitions. [2021-10-13 20:34:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 20:34:00,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:00,916 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-10-13 20:34:00,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:01,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:01,130 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1504031616, now seen corresponding path program 1 times [2021-10-13 20:34:01,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:01,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477889016] [2021-10-13 20:34:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:34:01,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:01,134 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:01,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 20:34:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:01,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:34:01,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:01,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:01,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:01,659 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:34:01,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:34:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:34:01,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:02,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:02,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477889016] [2021-10-13 20:34:02,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477889016] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 20:34:02,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 20:34:02,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2021-10-13 20:34:02,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442420130] [2021-10-13 20:34:02,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:34:02,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:34:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:34:02,380 INFO L87 Difference]: Start difference. First operand 1610 states and 6923 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-13 20:34:02,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:02,717 INFO L93 Difference]: Finished difference Result 1811 states and 7444 transitions. [2021-10-13 20:34:02,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:34:02,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2021-10-13 20:34:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:02,724 INFO L225 Difference]: With dead ends: 1811 [2021-10-13 20:34:02,724 INFO L226 Difference]: Without dead ends: 1811 [2021-10-13 20:34:02,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 414.8ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 20:34:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2021-10-13 20:34:02,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1773. [2021-10-13 20:34:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1773 states, 1736 states have (on average 4.27073732718894) internal successors, (7414), 1772 states have internal predecessors, (7414), 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) [2021-10-13 20:34:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1773 states to 1773 states and 7414 transitions. [2021-10-13 20:34:02,890 INFO L78 Accepts]: Start accepts. Automaton has 1773 states and 7414 transitions. Word has length 8 [2021-10-13 20:34:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:02,891 INFO L470 AbstractCegarLoop]: Abstraction has 1773 states and 7414 transitions. [2021-10-13 20:34:02,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-13 20:34:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1773 states and 7414 transitions. [2021-10-13 20:34:02,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 20:34:02,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:02,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:02,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:03,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:03,108 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:03,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1471438171, now seen corresponding path program 1 times [2021-10-13 20:34:03,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:03,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893328521] [2021-10-13 20:34:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:34:03,111 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:03,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:03,112 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:03,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 20:34:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:03,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 20:34:03,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:03,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:03,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:03,768 INFO L354 Elim1Store]: treesize reduction 357, result has 18.7 percent of original size [2021-10-13 20:34:03,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 91 [2021-10-13 20:34:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:03,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:04,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:04,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893328521] [2021-10-13 20:34:04,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893328521] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:34:04,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:34:04,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 20:34:04,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492920288] [2021-10-13 20:34:04,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:34:04,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:34:04,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:34:04,370 INFO L87 Difference]: Start difference. First operand 1773 states and 7414 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-13 20:34:05,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:05,811 INFO L93 Difference]: Finished difference Result 3066 states and 13065 transitions. [2021-10-13 20:34:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 20:34:05,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 8 [2021-10-13 20:34:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:05,824 INFO L225 Difference]: With dead ends: 3066 [2021-10-13 20:34:05,825 INFO L226 Difference]: Without dead ends: 3066 [2021-10-13 20:34:05,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 349.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:34:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3066 states. [2021-10-13 20:34:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3066 to 2815. [2021-10-13 20:34:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2815 states, 2778 states have (on average 4.494240460763139) internal successors, (12485), 2814 states have internal predecessors, (12485), 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) [2021-10-13 20:34:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 12485 transitions. [2021-10-13 20:34:06,001 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 12485 transitions. Word has length 8 [2021-10-13 20:34:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:06,002 INFO L470 AbstractCegarLoop]: Abstraction has 2815 states and 12485 transitions. [2021-10-13 20:34:06,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-13 20:34:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 12485 transitions. [2021-10-13 20:34:06,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 20:34:06,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:06,012 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:06,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:06,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:06,226 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:06,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:06,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1471438139, now seen corresponding path program 1 times [2021-10-13 20:34:06,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:06,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311195568] [2021-10-13 20:34:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:34:06,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:06,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:06,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:06,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 20:34:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:06,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:34:06,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:06,708 INFO L354 Elim1Store]: treesize reduction 367, result has 14.1 percent of original size [2021-10-13 20:34:06,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 96 [2021-10-13 20:34:06,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1609 treesize of output 1545 [2021-10-13 20:34:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:10,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:10,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:10,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311195568] [2021-10-13 20:34:10,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311195568] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:34:10,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:34:10,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:34:10,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934171730] [2021-10-13 20:34:10,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:34:10,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:10,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:34:10,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:34:10,246 INFO L87 Difference]: Start difference. First operand 2815 states and 12485 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-10-13 20:34:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:10,430 INFO L93 Difference]: Finished difference Result 2618 states and 11587 transitions. [2021-10-13 20:34:10,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:34:10,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 8 [2021-10-13 20:34:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:10,440 INFO L225 Difference]: With dead ends: 2618 [2021-10-13 20:34:10,441 INFO L226 Difference]: Without dead ends: 2618 [2021-10-13 20:34:10,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2039.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:34:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-10-13 20:34:10,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2618. [2021-10-13 20:34:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2591 states have (on average 4.472018525665766) internal successors, (11587), 2617 states have internal predecessors, (11587), 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) [2021-10-13 20:34:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 11587 transitions. [2021-10-13 20:34:10,534 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 11587 transitions. Word has length 8 [2021-10-13 20:34:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:10,534 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 11587 transitions. [2021-10-13 20:34:10,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-10-13 20:34:10,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 11587 transitions. [2021-10-13 20:34:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 20:34:10,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:10,536 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:10,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:10,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:10,749 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:10,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1471438137, now seen corresponding path program 1 times [2021-10-13 20:34:10,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:10,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382760438] [2021-10-13 20:34:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:34:10,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:10,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:10,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:10,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 20:34:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:10,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:34:10,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:11,242 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:34:11,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 20:34:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:11,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:11,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:11,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382760438] [2021-10-13 20:34:11,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382760438] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:34:11,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:34:11,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:34:11,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605487978] [2021-10-13 20:34:11,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:34:11,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:34:11,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:34:11,989 INFO L87 Difference]: Start difference. First operand 2618 states and 11587 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 20:34:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:12,104 INFO L93 Difference]: Finished difference Result 2421 states and 10689 transitions. [2021-10-13 20:34:12,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:34:12,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 20:34:12,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:12,113 INFO L225 Difference]: With dead ends: 2421 [2021-10-13 20:34:12,114 INFO L226 Difference]: Without dead ends: 2421 [2021-10-13 20:34:12,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:34:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-10-13 20:34:12,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2421. [2021-10-13 20:34:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2404 states have (on average 4.446339434276206) internal successors, (10689), 2420 states have internal predecessors, (10689), 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) [2021-10-13 20:34:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 10689 transitions. [2021-10-13 20:34:12,231 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 10689 transitions. Word has length 8 [2021-10-13 20:34:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:12,232 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 10689 transitions. [2021-10-13 20:34:12,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 20:34:12,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 10689 transitions. [2021-10-13 20:34:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 20:34:12,233 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:12,233 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-13 20:34:12,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:12,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:12,447 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:12,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:12,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1048754048, now seen corresponding path program 1 times [2021-10-13 20:34:12,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:12,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978915824] [2021-10-13 20:34:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:34:12,452 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:12,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:12,455 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:12,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 20:34:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:12,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 20:34:12,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:12,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:12,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:13,030 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:34:13,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:34:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:34:13,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:14,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:14,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978915824] [2021-10-13 20:34:14,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978915824] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:14,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:14,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-10-13 20:34:14,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325511804] [2021-10-13 20:34:14,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:34:14,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:14,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:34:14,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:34:14,010 INFO L87 Difference]: Start difference. First operand 2421 states and 10689 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-13 20:34:15,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:15,181 INFO L93 Difference]: Finished difference Result 2896 states and 12275 transitions. [2021-10-13 20:34:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 20:34:15,182 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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 9 [2021-10-13 20:34:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:15,192 INFO L225 Difference]: With dead ends: 2896 [2021-10-13 20:34:15,192 INFO L226 Difference]: Without dead ends: 2896 [2021-10-13 20:34:15,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 685.1ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 20:34:15,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2021-10-13 20:34:15,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2686. [2021-10-13 20:34:15,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2669 states have (on average 4.388535031847134) internal successors, (11713), 2685 states have internal predecessors, (11713), 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) [2021-10-13 20:34:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 11713 transitions. [2021-10-13 20:34:15,281 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 11713 transitions. Word has length 9 [2021-10-13 20:34:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:15,282 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 11713 transitions. [2021-10-13 20:34:15,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2021-10-13 20:34:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 11713 transitions. [2021-10-13 20:34:15,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 20:34:15,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:15,283 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-13 20:34:15,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:15,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:15,496 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:15,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:15,496 INFO L82 PathProgramCache]: Analyzing trace with hash 179948672, now seen corresponding path program 2 times [2021-10-13 20:34:15,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:15,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181610988] [2021-10-13 20:34:15,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:34:15,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:15,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:15,499 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:15,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 20:34:15,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:34:15,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:15,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 20:34:15,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:15,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:15,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:16,189 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:34:16,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:34:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:16,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:18,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:18,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181610988] [2021-10-13 20:34:18,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181610988] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:18,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:18,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 20:34:18,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810942944] [2021-10-13 20:34:18,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:34:18,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:18,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:34:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:34:18,227 INFO L87 Difference]: Start difference. First operand 2686 states and 11713 transitions. Second operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2021-10-13 20:34:29,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:29,146 INFO L93 Difference]: Finished difference Result 8018 states and 33771 transitions. [2021-10-13 20:34:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 20:34:29,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 10 [2021-10-13 20:34:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:29,182 INFO L225 Difference]: With dead ends: 8018 [2021-10-13 20:34:29,182 INFO L226 Difference]: Without dead ends: 8018 [2021-10-13 20:34:29,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 5677.3ms TimeCoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2021-10-13 20:34:29,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8018 states. [2021-10-13 20:34:29,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8018 to 3666. [2021-10-13 20:34:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3649 states have (on average 4.440942724033982) internal successors, (16205), 3665 states have internal predecessors, (16205), 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) [2021-10-13 20:34:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 16205 transitions. [2021-10-13 20:34:29,477 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 16205 transitions. Word has length 10 [2021-10-13 20:34:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:29,477 INFO L470 AbstractCegarLoop]: Abstraction has 3666 states and 16205 transitions. [2021-10-13 20:34:29,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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) [2021-10-13 20:34:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 16205 transitions. [2021-10-13 20:34:29,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 20:34:29,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:29,479 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:29,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:29,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:29,694 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:29,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1960031995, now seen corresponding path program 1 times [2021-10-13 20:34:29,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:29,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415376774] [2021-10-13 20:34:29,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:34:29,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:29,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:29,698 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:29,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 20:34:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:29,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 20:34:29,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:29,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:29,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:30,431 INFO L354 Elim1Store]: treesize reduction 357, result has 18.7 percent of original size [2021-10-13 20:34:30,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 91 [2021-10-13 20:34:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:34:30,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:34:32,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:32,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415376774] [2021-10-13 20:34:32,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415376774] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:32,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:32,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 20:34:32,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996781510] [2021-10-13 20:34:32,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:34:32,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:32,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:34:32,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:34:32,023 INFO L87 Difference]: Start difference. First operand 3666 states and 16205 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2021-10-13 20:34:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:38,757 INFO L93 Difference]: Finished difference Result 8717 states and 37531 transitions. [2021-10-13 20:34:38,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 20:34:38,759 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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 12 [2021-10-13 20:34:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:38,793 INFO L225 Difference]: With dead ends: 8717 [2021-10-13 20:34:38,794 INFO L226 Difference]: Without dead ends: 8717 [2021-10-13 20:34:38,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1830.9ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:34:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8717 states. [2021-10-13 20:34:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8717 to 6045. [2021-10-13 20:34:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6045 states, 6028 states have (on average 4.520570670205707) internal successors, (27250), 6044 states have internal predecessors, (27250), 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) [2021-10-13 20:34:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6045 states to 6045 states and 27250 transitions. [2021-10-13 20:34:39,044 INFO L78 Accepts]: Start accepts. Automaton has 6045 states and 27250 transitions. Word has length 12 [2021-10-13 20:34:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:39,045 INFO L470 AbstractCegarLoop]: Abstraction has 6045 states and 27250 transitions. [2021-10-13 20:34:39,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 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) [2021-10-13 20:34:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6045 states and 27250 transitions. [2021-10-13 20:34:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 20:34:39,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:39,048 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:39,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-13 20:34:39,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:39,256 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:39,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:39,257 INFO L82 PathProgramCache]: Analyzing trace with hash 429150219, now seen corresponding path program 1 times [2021-10-13 20:34:39,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:39,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297848402] [2021-10-13 20:34:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:34:39,258 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:39,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:39,260 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:39,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 20:34:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:34:39,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 20:34:39,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:39,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:39,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:39,897 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:34:39,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:34:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:34:40,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:41,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:41,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297848402] [2021-10-13 20:34:41,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297848402] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:41,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:41,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-10-13 20:34:41,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233825659] [2021-10-13 20:34:41,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:34:41,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:34:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:34:41,185 INFO L87 Difference]: Start difference. First operand 6045 states and 27250 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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) [2021-10-13 20:34:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:42,269 INFO L93 Difference]: Finished difference Result 6153 states and 27480 transitions. [2021-10-13 20:34:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 20:34:42,270 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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 13 [2021-10-13 20:34:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:42,299 INFO L225 Difference]: With dead ends: 6153 [2021-10-13 20:34:42,300 INFO L226 Difference]: Without dead ends: 6153 [2021-10-13 20:34:42,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 710.3ms TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 20:34:42,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6153 states. [2021-10-13 20:34:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6153 to 6044. [2021-10-13 20:34:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6044 states, 6027 states have (on average 4.521154803384769) internal successors, (27249), 6043 states have internal predecessors, (27249), 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) [2021-10-13 20:34:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 27249 transitions. [2021-10-13 20:34:42,516 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 27249 transitions. Word has length 13 [2021-10-13 20:34:42,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:42,517 INFO L470 AbstractCegarLoop]: Abstraction has 6044 states and 27249 transitions. [2021-10-13 20:34:42,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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) [2021-10-13 20:34:42,517 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 27249 transitions. [2021-10-13 20:34:42,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 20:34:42,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:42,520 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:42,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:42,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:42,722 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:42,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1460743157, now seen corresponding path program 2 times [2021-10-13 20:34:42,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:42,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198697055] [2021-10-13 20:34:42,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:34:42,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:42,725 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:42,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 20:34:43,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:34:43,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:43,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 20:34:43,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:43,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:43,415 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:34:43,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:34:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:43,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:34:45,319 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:45,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198697055] [2021-10-13 20:34:45,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198697055] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:45,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:45,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 20:34:45,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412064645] [2021-10-13 20:34:45,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:34:45,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:45,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:34:45,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:34:45,321 INFO L87 Difference]: Start difference. First operand 6044 states and 27249 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-13 20:34:47,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:47,504 INFO L93 Difference]: Finished difference Result 5807 states and 25538 transitions. [2021-10-13 20:34:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 20:34:47,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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 14 [2021-10-13 20:34:47,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:47,533 INFO L225 Difference]: With dead ends: 5807 [2021-10-13 20:34:47,533 INFO L226 Difference]: Without dead ends: 5807 [2021-10-13 20:34:47,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1584.8ms TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:34:47,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5807 states. [2021-10-13 20:34:47,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5807 to 5592. [2021-10-13 20:34:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 5575 states have (on average 4.496681614349776) internal successors, (25069), 5591 states have internal predecessors, (25069), 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) [2021-10-13 20:34:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 25069 transitions. [2021-10-13 20:34:47,675 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 25069 transitions. Word has length 14 [2021-10-13 20:34:47,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:47,676 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 25069 transitions. [2021-10-13 20:34:47,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 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) [2021-10-13 20:34:47,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 25069 transitions. [2021-10-13 20:34:47,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 20:34:47,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:47,680 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:34:47,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:47,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:47,895 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:47,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:47,896 INFO L82 PathProgramCache]: Analyzing trace with hash 82104331, now seen corresponding path program 3 times [2021-10-13 20:34:47,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:47,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927232208] [2021-10-13 20:34:47,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:34:47,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:47,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:47,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 20:34:48,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 20:34:48,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:48,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 20:34:48,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:48,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:48,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:48,785 INFO L354 Elim1Store]: treesize reduction 357, result has 18.7 percent of original size [2021-10-13 20:34:48,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 91 [2021-10-13 20:34:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:34:49,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:34:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 20:34:50,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:34:50,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927232208] [2021-10-13 20:34:50,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927232208] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:34:50,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:34:50,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 20:34:50,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713133440] [2021-10-13 20:34:50,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:34:50,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:34:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:34:50,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:34:50,651 INFO L87 Difference]: Start difference. First operand 5592 states and 25069 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-13 20:34:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:34:57,825 INFO L93 Difference]: Finished difference Result 12731 states and 56609 transitions. [2021-10-13 20:34:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 20:34:57,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 15 [2021-10-13 20:34:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:34:57,875 INFO L225 Difference]: With dead ends: 12731 [2021-10-13 20:34:57,876 INFO L226 Difference]: Without dead ends: 12731 [2021-10-13 20:34:57,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1705.2ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:34:57,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12731 states. [2021-10-13 20:34:58,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12731 to 11736. [2021-10-13 20:34:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11736 states, 11719 states have (on average 4.611058964075433) internal successors, (54037), 11735 states have internal predecessors, (54037), 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) [2021-10-13 20:34:58,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11736 states to 11736 states and 54037 transitions. [2021-10-13 20:34:58,269 INFO L78 Accepts]: Start accepts. Automaton has 11736 states and 54037 transitions. Word has length 15 [2021-10-13 20:34:58,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:34:58,269 INFO L470 AbstractCegarLoop]: Abstraction has 11736 states and 54037 transitions. [2021-10-13 20:34:58,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2021-10-13 20:34:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 11736 states and 54037 transitions. [2021-10-13 20:34:58,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 20:34:58,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:34:58,272 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-13 20:34:58,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 20:34:58,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:34:58,473 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:34:58,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:34:58,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1318913982, now seen corresponding path program 3 times [2021-10-13 20:34:58,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:34:58,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358214211] [2021-10-13 20:34:58,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:34:58,476 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:34:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:34:58,477 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:34:58,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 20:34:58,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 20:34:58,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:34:58,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 20:34:58,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:34:58,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:58,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:34:59,354 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:34:59,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:35:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:00,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:35:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:35:07,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:35:07,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358214211] [2021-10-13 20:35:07,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358214211] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:35:07,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:35:07,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-13 20:35:07,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727022122] [2021-10-13 20:35:07,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 20:35:07,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:35:07,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 20:35:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-13 20:35:07,375 INFO L87 Difference]: Start difference. First operand 11736 states and 54037 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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) [2021-10-13 20:35:20,988 WARN L207 SmtUtils]: Spent 10.13 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-13 20:35:28,632 WARN L207 SmtUtils]: Spent 6.70 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-13 20:35:36,783 WARN L207 SmtUtils]: Spent 7.18 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-13 20:35:44,109 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-13 20:36:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:26,342 INFO L93 Difference]: Finished difference Result 303417 states and 1412371 transitions. [2021-10-13 20:36:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 20:36:26,344 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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 16 [2021-10-13 20:36:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:31,502 INFO L225 Difference]: With dead ends: 303417 [2021-10-13 20:36:31,503 INFO L226 Difference]: Without dead ends: 303417 [2021-10-13 20:36:31,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 60164.7ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 20:36:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303417 states. [2021-10-13 20:36:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303417 to 11752. [2021-10-13 20:36:39,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11752 states, 11735 states have (on average 4.607498934810396) internal successors, (54069), 11751 states have internal predecessors, (54069), 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) [2021-10-13 20:36:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11752 states to 11752 states and 54069 transitions. [2021-10-13 20:36:39,473 INFO L78 Accepts]: Start accepts. Automaton has 11752 states and 54069 transitions. Word has length 16 [2021-10-13 20:36:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:39,474 INFO L470 AbstractCegarLoop]: Abstraction has 11752 states and 54069 transitions. [2021-10-13 20:36:39,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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) [2021-10-13 20:36:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 11752 states and 54069 transitions. [2021-10-13 20:36:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 20:36:39,486 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:39,486 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1] [2021-10-13 20:36:39,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 20:36:39,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:36:39,687 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:36:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:39,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1524741472, now seen corresponding path program 3 times [2021-10-13 20:36:39,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:39,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973918515] [2021-10-13 20:36:39,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:36:39,690 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:39,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:39,692 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:36:39,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 20:36:41,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 20:36:41,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:41,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 20:36:41,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:41,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:36:41,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:36:41,866 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:36:41,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:36:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 20:36:42,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 20:36:43,207 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:43,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973918515] [2021-10-13 20:36:43,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973918515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:43,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:43,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-13 20:36:43,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232796698] [2021-10-13 20:36:43,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 20:36:43,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 20:36:43,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-13 20:36:43,209 INFO L87 Difference]: Start difference. First operand 11752 states and 54069 transitions. Second operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 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) [2021-10-13 20:36:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:36:46,308 INFO L93 Difference]: Finished difference Result 16768 states and 73987 transitions. [2021-10-13 20:36:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 20:36:46,309 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 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 19 [2021-10-13 20:36:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:36:46,382 INFO L225 Difference]: With dead ends: 16768 [2021-10-13 20:36:46,382 INFO L226 Difference]: Without dead ends: 16768 [2021-10-13 20:36:46,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1742.6ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:36:46,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16768 states. [2021-10-13 20:36:47,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16768 to 15203. [2021-10-13 20:36:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15203 states, 15186 states have (on average 4.587909917028842) internal successors, (69672), 15202 states have internal predecessors, (69672), 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) [2021-10-13 20:36:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15203 states to 15203 states and 69672 transitions. [2021-10-13 20:36:47,280 INFO L78 Accepts]: Start accepts. Automaton has 15203 states and 69672 transitions. Word has length 19 [2021-10-13 20:36:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:36:47,281 INFO L470 AbstractCegarLoop]: Abstraction has 15203 states and 69672 transitions. [2021-10-13 20:36:47,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 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) [2021-10-13 20:36:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 15203 states and 69672 transitions. [2021-10-13 20:36:47,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 20:36:47,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:36:47,296 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 4, 1, 1, 1, 1] [2021-10-13 20:36:47,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 20:36:47,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:36:47,510 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:36:47,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:36:47,511 INFO L82 PathProgramCache]: Analyzing trace with hash 893991264, now seen corresponding path program 4 times [2021-10-13 20:36:47,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:36:47,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923204421] [2021-10-13 20:36:47,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:36:47,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:36:47,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:36:47,514 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:36:47,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 20:36:47,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:36:47,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:36:47,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 20:36:47,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:36:47,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:36:47,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:36:48,306 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:36:48,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:36:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:36:49,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:36:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:36:54,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:36:54,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923204421] [2021-10-13 20:36:54,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923204421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:36:54,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:36:54,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-13 20:36:54,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941843555] [2021-10-13 20:36:54,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 20:36:54,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:36:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 20:36:54,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-10-13 20:36:54,366 INFO L87 Difference]: Start difference. First operand 15203 states and 69672 transitions. Second operand has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:28,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:37:28,650 INFO L93 Difference]: Finished difference Result 43692 states and 191159 transitions. [2021-10-13 20:37:28,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 20:37:28,652 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-13 20:37:28,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:37:29,126 INFO L225 Difference]: With dead ends: 43692 [2021-10-13 20:37:29,126 INFO L226 Difference]: Without dead ends: 43692 [2021-10-13 20:37:29,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 13491.9ms TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 20:37:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43692 states. [2021-10-13 20:37:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43692 to 18333. [2021-10-13 20:37:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18333 states, 18316 states have (on average 4.669360122297445) internal successors, (85524), 18332 states have internal predecessors, (85524), 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) [2021-10-13 20:37:30,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18333 states to 18333 states and 85524 transitions. [2021-10-13 20:37:30,221 INFO L78 Accepts]: Start accepts. Automaton has 18333 states and 85524 transitions. Word has length 20 [2021-10-13 20:37:30,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:37:30,222 INFO L470 AbstractCegarLoop]: Abstraction has 18333 states and 85524 transitions. [2021-10-13 20:37:30,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.625) internal successors, (39), 23 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:37:30,222 INFO L276 IsEmpty]: Start isEmpty. Operand 18333 states and 85524 transitions. [2021-10-13 20:37:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:37:30,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:37:30,242 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1] [2021-10-13 20:37:30,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-13 20:37:30,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:37:30,443 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:37:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:37:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2039957152, now seen corresponding path program 5 times [2021-10-13 20:37:30,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:37:30,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075186609] [2021-10-13 20:37:30,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:37:30,446 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:37:30,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:37:30,447 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:37:30,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 20:37:30,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 20:37:30,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:37:30,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 20:37:30,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:37:31,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:37:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:37:31,551 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:37:31,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:37:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:33,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:37:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:37:39,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:37:39,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075186609] [2021-10-13 20:37:39,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075186609] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:37:39,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:37:39,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-13 20:37:39,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740025212] [2021-10-13 20:37:39,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 20:37:39,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:37:39,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 20:37:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2021-10-13 20:37:39,221 INFO L87 Difference]: Start difference. First operand 18333 states and 85524 transitions. Second operand has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 28 states have internal predecessors, (44), 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) [2021-10-13 20:40:21,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:21,301 INFO L93 Difference]: Finished difference Result 103483 states and 457026 transitions. [2021-10-13 20:40:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 20:40:21,302 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 28 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 20:40:21,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:22,470 INFO L225 Difference]: With dead ends: 103483 [2021-10-13 20:40:22,471 INFO L226 Difference]: Without dead ends: 103483 [2021-10-13 20:40:22,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 80648.1ms TimeCoverageRelationStatistics Valid=1150, Invalid=4252, Unknown=0, NotChecked=0, Total=5402 [2021-10-13 20:40:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103483 states. [2021-10-13 20:40:24,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103483 to 23949. [2021-10-13 20:40:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23949 states, 23932 states have (on average 4.77770349323082) internal successors, (114340), 23948 states have internal predecessors, (114340), 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) [2021-10-13 20:40:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23949 states to 23949 states and 114340 transitions. [2021-10-13 20:40:25,115 INFO L78 Accepts]: Start accepts. Automaton has 23949 states and 114340 transitions. Word has length 22 [2021-10-13 20:40:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:25,116 INFO L470 AbstractCegarLoop]: Abstraction has 23949 states and 114340 transitions. [2021-10-13 20:40:25,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 28 states have internal predecessors, (44), 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) [2021-10-13 20:40:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 23949 states and 114340 transitions. [2021-10-13 20:40:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:40:25,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:25,186 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:40:25,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:25,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:25,403 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:40:25,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:25,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1709230343, now seen corresponding path program 2 times [2021-10-13 20:40:25,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:25,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957832070] [2021-10-13 20:40:25,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:40:25,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:25,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:25,406 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:25,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 20:40:25,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 20:40:25,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:25,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 20:40:25,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:25,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:40:25,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:40:26,303 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:40:26,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:40:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:40:27,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:31,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:31,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957832070] [2021-10-13 20:40:31,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957832070] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:31,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:31,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-13 20:40:31,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910170706] [2021-10-13 20:40:31,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 20:40:31,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 20:40:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2021-10-13 20:40:31,868 INFO L87 Difference]: Start difference. First operand 23949 states and 114340 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 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) [2021-10-13 20:40:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:42,904 INFO L93 Difference]: Finished difference Result 46046 states and 204037 transitions. [2021-10-13 20:40:42,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 20:40:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 20:40:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:43,174 INFO L225 Difference]: With dead ends: 46046 [2021-10-13 20:40:43,174 INFO L226 Difference]: Without dead ends: 46046 [2021-10-13 20:40:43,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 7490.8ms TimeCoverageRelationStatistics Valid=305, Invalid=1417, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 20:40:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46046 states. [2021-10-13 20:40:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46046 to 22659. [2021-10-13 20:40:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22659 states, 22642 states have (on average 4.72369931984807) internal successors, (106954), 22658 states have internal predecessors, (106954), 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) [2021-10-13 20:40:44,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22659 states to 22659 states and 106954 transitions. [2021-10-13 20:40:44,634 INFO L78 Accepts]: Start accepts. Automaton has 22659 states and 106954 transitions. Word has length 22 [2021-10-13 20:40:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:44,634 INFO L470 AbstractCegarLoop]: Abstraction has 22659 states and 106954 transitions. [2021-10-13 20:40:44,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 25 states have internal predecessors, (43), 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) [2021-10-13 20:40:44,634 INFO L276 IsEmpty]: Start isEmpty. Operand 22659 states and 106954 transitions. [2021-10-13 20:40:44,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 20:40:44,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:44,660 INFO L512 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] [2021-10-13 20:40:44,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:44,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:44,861 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:40:44,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:44,862 INFO L82 PathProgramCache]: Analyzing trace with hash 454810850, now seen corresponding path program 1 times [2021-10-13 20:40:44,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:44,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614037681] [2021-10-13 20:40:44,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:40:44,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:44,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:44,865 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:44,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 20:40:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:40:45,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 20:40:45,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:45,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:40:45,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:45,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614037681] [2021-10-13 20:40:45,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614037681] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:40:45,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:40:45,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:40:45,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083828301] [2021-10-13 20:40:45,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:40:45,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:45,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:40:45,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:40:45,601 INFO L87 Difference]: Start difference. First operand 22659 states and 106954 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-10-13 20:40:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:40:45,902 INFO L93 Difference]: Finished difference Result 23416 states and 109877 transitions. [2021-10-13 20:40:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:40:45,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-13 20:40:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:40:46,359 INFO L225 Difference]: With dead ends: 23416 [2021-10-13 20:40:46,360 INFO L226 Difference]: Without dead ends: 23326 [2021-10-13 20:40:46,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:40:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23326 states. [2021-10-13 20:40:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23326 to 22900. [2021-10-13 20:40:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22900 states, 22883 states have (on average 4.715858934580256) internal successors, (107913), 22899 states have internal predecessors, (107913), 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) [2021-10-13 20:40:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22900 states to 22900 states and 107913 transitions. [2021-10-13 20:40:47,257 INFO L78 Accepts]: Start accepts. Automaton has 22900 states and 107913 transitions. Word has length 22 [2021-10-13 20:40:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:40:47,258 INFO L470 AbstractCegarLoop]: Abstraction has 22900 states and 107913 transitions. [2021-10-13 20:40:47,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 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) [2021-10-13 20:40:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 22900 states and 107913 transitions. [2021-10-13 20:40:47,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 20:40:47,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:40:47,278 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2021-10-13 20:40:47,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 20:40:47,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:40:47,486 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:40:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:40:47,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2057483616, now seen corresponding path program 6 times [2021-10-13 20:40:47,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:40:47,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115341466] [2021-10-13 20:40:47,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:40:47,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:40:47,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:40:47,490 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:40:47,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 20:40:48,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 20:40:48,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:40:48,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 20:40:48,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:40:48,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:40:48,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:40:48,870 INFO L354 Elim1Store]: treesize reduction 357, result has 18.7 percent of original size [2021-10-13 20:40:48,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 91 [2021-10-13 20:40:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 20:40:49,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:40:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 20:40:53,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:40:53,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115341466] [2021-10-13 20:40:53,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115341466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:40:53,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:40:53,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-13 20:40:53,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449099457] [2021-10-13 20:40:53,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:40:53,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:40:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:40:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:40:53,501 INFO L87 Difference]: Start difference. First operand 22900 states and 107913 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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) [2021-10-13 20:41:48,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:48,914 INFO L93 Difference]: Finished difference Result 63883 states and 287125 transitions. [2021-10-13 20:41:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 20:41:48,916 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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 23 [2021-10-13 20:41:48,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:49,794 INFO L225 Difference]: With dead ends: 63883 [2021-10-13 20:41:49,801 INFO L226 Difference]: Without dead ends: 63883 [2021-10-13 20:41:49,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 11885.3ms TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 20:41:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63883 states. [2021-10-13 20:41:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63883 to 31831. [2021-10-13 20:41:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31831 states, 31814 states have (on average 4.739140001257308) internal successors, (150771), 31830 states have internal predecessors, (150771), 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) [2021-10-13 20:41:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31831 states to 31831 states and 150771 transitions. [2021-10-13 20:41:51,627 INFO L78 Accepts]: Start accepts. Automaton has 31831 states and 150771 transitions. Word has length 23 [2021-10-13 20:41:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:51,627 INFO L470 AbstractCegarLoop]: Abstraction has 31831 states and 150771 transitions. [2021-10-13 20:41:51,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 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) [2021-10-13 20:41:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 31831 states and 150771 transitions. [2021-10-13 20:41:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 20:41:51,655 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:51,655 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:41:51,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:51,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:41:51,869 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:41:51,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:51,870 INFO L82 PathProgramCache]: Analyzing trace with hash 823151063, now seen corresponding path program 4 times [2021-10-13 20:41:51,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:51,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497522889] [2021-10-13 20:41:51,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:41:51,871 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:51,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:51,873 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:41:51,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 20:41:52,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:41:52,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:41:52,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 20:41:52,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:52,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:41:52,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:41:52,779 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:41:52,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:41:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 20:41:53,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:56,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:56,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497522889] [2021-10-13 20:41:56,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497522889] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:41:56,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:41:56,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 19 [2021-10-13 20:41:56,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916532260] [2021-10-13 20:41:56,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-13 20:41:56,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:56,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 20:41:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-13 20:41:56,405 INFO L87 Difference]: Start difference. First operand 31831 states and 150771 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 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) [2021-10-13 20:42:00,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:00,185 INFO L93 Difference]: Finished difference Result 33339 states and 156392 transitions. [2021-10-13 20:42:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 20:42:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 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 23 [2021-10-13 20:42:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:00,337 INFO L225 Difference]: With dead ends: 33339 [2021-10-13 20:42:00,337 INFO L226 Difference]: Without dead ends: 33339 [2021-10-13 20:42:00,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3571.4ms TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-10-13 20:42:00,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33339 states. [2021-10-13 20:42:01,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33339 to 32715. [2021-10-13 20:42:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32715 states, 32698 states have (on average 4.725426631598263) internal successors, (154512), 32714 states have internal predecessors, (154512), 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) [2021-10-13 20:42:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32715 states to 32715 states and 154512 transitions. [2021-10-13 20:42:01,681 INFO L78 Accepts]: Start accepts. Automaton has 32715 states and 154512 transitions. Word has length 23 [2021-10-13 20:42:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:01,682 INFO L470 AbstractCegarLoop]: Abstraction has 32715 states and 154512 transitions. [2021-10-13 20:42:01,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 19 states have internal predecessors, (41), 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) [2021-10-13 20:42:01,682 INFO L276 IsEmpty]: Start isEmpty. Operand 32715 states and 154512 transitions. [2021-10-13 20:42:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 20:42:01,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:01,707 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:01,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:01,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:42:01,920 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:42:01,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:01,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1005204009, now seen corresponding path program 5 times [2021-10-13 20:42:01,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:01,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282160030] [2021-10-13 20:42:01,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:42:01,923 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:01,924 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:42:01,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 20:42:02,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 20:42:02,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:42:02,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 20:42:02,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:02,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:42:02,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:42:03,081 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:42:03,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:42:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 20:42:04,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:08,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:08,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282160030] [2021-10-13 20:42:08,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282160030] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:42:08,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:42:08,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 23 [2021-10-13 20:42:08,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296614934] [2021-10-13 20:42:08,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 20:42:08,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 20:42:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-10-13 20:42:08,566 INFO L87 Difference]: Start difference. First operand 32715 states and 154512 transitions. Second operand has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:20,786 INFO L93 Difference]: Finished difference Result 96725 states and 450384 transitions. [2021-10-13 20:43:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 20:43:20,790 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-13 20:43:20,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:21,580 INFO L225 Difference]: With dead ends: 96725 [2021-10-13 20:43:21,581 INFO L226 Difference]: Without dead ends: 96725 [2021-10-13 20:43:21,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 33251.1ms TimeCoverageRelationStatistics Valid=512, Invalid=1840, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 20:43:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96725 states. [2021-10-13 20:43:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96725 to 38534. [2021-10-13 20:43:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38534 states, 38517 states have (on average 4.703351766752343) internal successors, (181159), 38533 states have internal predecessors, (181159), 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) [2021-10-13 20:43:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38534 states to 38534 states and 181159 transitions. [2021-10-13 20:43:24,549 INFO L78 Accepts]: Start accepts. Automaton has 38534 states and 181159 transitions. Word has length 24 [2021-10-13 20:43:24,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:24,550 INFO L470 AbstractCegarLoop]: Abstraction has 38534 states and 181159 transitions. [2021-10-13 20:43:24,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:43:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 38534 states and 181159 transitions. [2021-10-13 20:43:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:43:24,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:24,584 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:43:24,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:24,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:24,792 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:43:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:24,793 INFO L82 PathProgramCache]: Analyzing trace with hash 2037730775, now seen corresponding path program 6 times [2021-10-13 20:43:24,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:24,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076651951] [2021-10-13 20:43:24,794 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:43:24,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:24,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:24,796 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:24,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 20:43:25,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-13 20:43:25,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:43:25,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 20:43:25,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:25,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:26,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:26,173 INFO L244 Elim1Store]: Index analysis took 453 ms [2021-10-13 20:43:26,602 INFO L354 Elim1Store]: treesize reduction 345, result has 19.2 percent of original size [2021-10-13 20:43:26,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 26 treesize of output 89 [2021-10-13 20:43:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 11 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:27,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:43:33,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:33,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076651951] [2021-10-13 20:43:33,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076651951] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:43:33,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:43:33,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-13 20:43:33,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550094669] [2021-10-13 20:43:33,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-10-13 20:43:33,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:33,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-10-13 20:43:33,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2021-10-13 20:43:33,451 INFO L87 Difference]: Start difference. First operand 38534 states and 181159 transitions. Second operand has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 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) [2021-10-13 20:43:46,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:46,559 INFO L93 Difference]: Finished difference Result 43394 states and 196738 transitions. [2021-10-13 20:43:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 20:43:46,560 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 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 [2021-10-13 20:43:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:46,769 INFO L225 Difference]: With dead ends: 43394 [2021-10-13 20:43:46,769 INFO L226 Difference]: Without dead ends: 43394 [2021-10-13 20:43:46,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 9426.8ms TimeCoverageRelationStatistics Valid=409, Invalid=1943, Unknown=0, NotChecked=0, Total=2352 [2021-10-13 20:43:46,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43394 states. [2021-10-13 20:43:48,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43394 to 33672. [2021-10-13 20:43:48,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33672 states, 33655 states have (on average 4.694785321646115) internal successors, (158003), 33671 states have internal predecessors, (158003), 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) [2021-10-13 20:43:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33672 states to 33672 states and 158003 transitions. [2021-10-13 20:43:48,274 INFO L78 Accepts]: Start accepts. Automaton has 33672 states and 158003 transitions. Word has length 26 [2021-10-13 20:43:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:48,274 INFO L470 AbstractCegarLoop]: Abstraction has 33672 states and 158003 transitions. [2021-10-13 20:43:48,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.793103448275862) internal successors, (52), 28 states have internal predecessors, (52), 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) [2021-10-13 20:43:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 33672 states and 158003 transitions. [2021-10-13 20:43:48,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 20:43:48,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:48,303 INFO L512 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] [2021-10-13 20:43:48,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:48,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:48,505 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:43:48,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:48,506 INFO L82 PathProgramCache]: Analyzing trace with hash -291367772, now seen corresponding path program 1 times [2021-10-13 20:43:48,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:48,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122159630] [2021-10-13 20:43:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:43:48,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:48,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:48,508 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:48,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 20:43:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:49,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 20:43:49,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:43:49,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:43:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 20:43:50,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:43:50,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122159630] [2021-10-13 20:43:50,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122159630] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:43:50,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:43:50,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-13 20:43:50,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092302326] [2021-10-13 20:43:50,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 20:43:50,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:43:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 20:43:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 20:43:50,083 INFO L87 Difference]: Start difference. First operand 33672 states and 158003 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-10-13 20:43:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:43:51,393 INFO L93 Difference]: Finished difference Result 63992 states and 297644 transitions. [2021-10-13 20:43:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 20:43:51,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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 [2021-10-13 20:43:51,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:43:51,808 INFO L225 Difference]: With dead ends: 63992 [2021-10-13 20:43:51,809 INFO L226 Difference]: Without dead ends: 63743 [2021-10-13 20:43:51,809 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 20:43:51,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63743 states. [2021-10-13 20:43:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63743 to 58326. [2021-10-13 20:43:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58326 states, 58309 states have (on average 4.737827779588057) internal successors, (276258), 58325 states have internal predecessors, (276258), 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) [2021-10-13 20:43:54,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58326 states to 58326 states and 276258 transitions. [2021-10-13 20:43:54,419 INFO L78 Accepts]: Start accepts. Automaton has 58326 states and 276258 transitions. Word has length 26 [2021-10-13 20:43:54,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:43:54,419 INFO L470 AbstractCegarLoop]: Abstraction has 58326 states and 276258 transitions. [2021-10-13 20:43:54,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 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) [2021-10-13 20:43:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 58326 states and 276258 transitions. [2021-10-13 20:43:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 20:43:54,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:43:54,976 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:43:54,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 20:43:55,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:43:55,192 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 36 more)] === [2021-10-13 20:43:55,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:43:55,193 INFO L82 PathProgramCache]: Analyzing trace with hash -2007938601, now seen corresponding path program 7 times [2021-10-13 20:43:55,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:43:55,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284236028] [2021-10-13 20:43:55,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:43:55,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:43:55,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:43:55,196 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:43:55,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 20:43:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:43:55,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 20:43:55,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:43:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:55,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 20:43:56,417 INFO L354 Elim1Store]: treesize reduction 357, result has 18.7 percent of original size [2021-10-13 20:43:56,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 6 case distinctions, treesize of input 28 treesize of output 91 [2021-10-13 20:43:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 20:43:57,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:44:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 20:44:00,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:44:00,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284236028] [2021-10-13 20:44:00,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284236028] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 20:44:00,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 20:44:00,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-13 20:44:00,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130429739] [2021-10-13 20:44:00,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 20:44:00,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:44:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 20:44:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:44:00,873 INFO L87 Difference]: Start difference. First operand 58326 states and 276258 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 17 states have internal predecessors, (42), 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) Received shutdown request... [2021-10-13 20:45:04,191 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:45:04,210 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:45:05,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 20:45:05,280 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,283 WARN L594 AbstractCegarLoop]: Verification canceled: while executing Executor. [2021-10-13 20:45:05,286 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,286 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:45:05,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:45:05,287 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:45:05,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:45:05,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:45:05,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:45:05,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:45:05,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:45:05,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:45:05,288 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:45:05,289 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 20:45:05,289 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 20:45:05,289 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 20:45:05,289 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 20:45:05,290 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 20:45:05,290 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 20:45:05,290 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 20:45:05,290 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 20:45:05,290 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:45:05,290 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,291 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0REQUIRES_VIOLATION [2021-10-13 20:45:05,292 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1REQUIRES_VIOLATION [2021-10-13 20:45:05,313 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:45:05,313 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:45:05,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:45:05 BasicIcfg [2021-10-13 20:45:05,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:45:05,328 INFO L168 Benchmark]: Toolchain (without parser) took 800710.21 ms. Allocated memory was 158.3 MB in the beginning and 6.5 GB in the end (delta: 6.4 GB). Free memory was 133.2 MB in the beginning and 2.5 GB in the end (delta: -2.4 GB). Peak memory consumption was 3.9 GB. Max. memory is 8.0 GB. [2021-10-13 20:45:05,328 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:45:05,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 528.66 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 118.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-13 20:45:05,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.33 ms. Allocated memory is still 158.3 MB. Free memory was 118.7 MB in the beginning and 116.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:45:05,330 INFO L168 Benchmark]: Boogie Preprocessor took 110.42 ms. Allocated memory is still 158.3 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:45:05,332 INFO L168 Benchmark]: RCFGBuilder took 2294.33 ms. Allocated memory is still 158.3 MB. Free memory was 114.0 MB in the beginning and 92.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:45:05,333 INFO L168 Benchmark]: TraceAbstraction took 797621.58 ms. Allocated memory was 158.3 MB in the beginning and 6.5 GB in the end (delta: 6.4 GB). Free memory was 92.1 MB in the beginning and 2.5 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.9 GB. Max. memory is 8.0 GB. [2021-10-13 20:45:05,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 158.3 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 528.66 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 118.7 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 129.33 ms. Allocated memory is still 158.3 MB. Free memory was 118.7 MB in the beginning and 116.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 110.42 ms. Allocated memory is still 158.3 MB. Free memory was 116.1 MB in the beginning and 114.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2294.33 ms. Allocated memory is still 158.3 MB. Free memory was 114.0 MB in the beginning and 92.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 797621.58 ms. Allocated memory was 158.3 MB in the beginning and 6.5 GB in the end (delta: 6.4 GB). Free memory was 92.1 MB in the beginning and 2.5 GB in the end (delta: -2.5 GB). Peak memory consumption was 3.9 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32941.0ms, 208 PlacesBefore, 71 PlacesAfterwards, 210 TransitionsBefore, 63 TransitionsAfterwards, 3608 CoEnabledTransitionPairs, 8 FixpointIterations, 121 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 13 ConcurrentYvCompositions, 10 ChoiceCompositions, 222 TotalNumberOfCompositions, 7231 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5352, positive: 5240, positive conditional: 0, positive unconditional: 5240, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2287, positive: 2264, positive conditional: 0, positive unconditional: 2264, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2287, positive: 2262, positive conditional: 0, positive unconditional: 2262, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1077, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 1055, negative conditional: 0, negative unconditional: 1055, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5352, positive: 2976, positive conditional: 0, positive unconditional: 2976, negative: 89, negative conditional: 0, negative unconditional: 89, unknown: 2287, unknown conditional: 0, unknown unconditional: 2287] , Statistics on independence cache: Total cache size (in pairs): 299, Positive cache size: 288, Positive conditional cache size: 0, Positive unconditional cache size: 288, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 147]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. [2021-10-13 20:45:05,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 240 locations, 40 error locations. Started 1 CEGAR loops. OverallTime: 797412.1ms, OverallIterations: 34, TraceHistogramMax: 14, EmptinessCheckTime: 903.3ms, AutomataDifference: 561145.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33246.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2642 SDtfs, 38954 SDslu, 22776 SDs, 0 SdLazy, 23904 SolverSat, 1690 SolverUnsat, 40 SolverUnknown, 0 SolverNotchecked, 314114.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1012 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 565 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2579 ImplicationChecksByTransitivity, 257638.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58326occurred in iteration=33, InterpolantAutomatonStates: 393, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29643.3ms AutomataMinimizationTime, 33 MinimizatonAttempts, 574470 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 421.3ms SsaConstructionTime, 5609.4ms SatisfiabilityAnalysisTime, 153766.5ms InterpolantComputationTime, 423 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 76 NumberOfCheckSat, 778 ConstructedInterpolants, 122 QuantifiedInterpolants, 20776 SizeOfPredicates, 540 NumberOfNonLiveVariables, 4056 ConjunctsInSsa, 572 ConjunctsInUnsatCore, 68 InterpolantComputations, 29 PerfectInterpolantSequences, 331/1272 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown