/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/popl20-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 21:36:47,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 21:36:47,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 21:36:47,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 21:36:47,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 21:36:47,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 21:36:47,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 21:36:47,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 21:36:47,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 21:36:47,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 21:36:47,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 21:36:47,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 21:36:47,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 21:36:47,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 21:36:47,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 21:36:47,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 21:36:47,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 21:36:47,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 21:36:47,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 21:36:47,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 21:36:47,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 21:36:47,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 21:36:47,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 21:36:47,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 21:36:47,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 21:36:47,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 21:36:47,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 21:36:47,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 21:36:47,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 21:36:47,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 21:36:47,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 21:36:47,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 21:36:47,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 21:36:47,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 21:36:47,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 21:36:47,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 21:36:47,928 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 21:36:47,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 21:36:47,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 21:36:47,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 21:36:47,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 21:36:47,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 21:36:47,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 21:36:47,987 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 21:36:47,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 21:36:47,988 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 21:36:47,989 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 21:36:47,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 21:36:47,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 21:36:47,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 21:36:47,990 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 21:36:47,991 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 21:36:47,991 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 21:36:47,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 21:36:47,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 21:36:47,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 21:36:47,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 21:36:47,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 21:36:47,992 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 21:36:47,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 21:36:47,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 21:36:47,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 21:36:47,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:36:47,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 21:36:47,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 21:36:47,994 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 21:36:48,017 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 21:36:48,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 21:36:48,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 21:36:48,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 21:36:48,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 21:36:48,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 21:36:48,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 21:36:48,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 21:36:48,486 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 21:36:48,487 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-13 21:36:48,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cf0b9fdc/a4e23ef0afc3494fb80aff76384fe588/FLAG86fb91dca [2021-10-13 21:36:49,122 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 21:36:49,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-min.wvr.c [2021-10-13 21:36:49,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cf0b9fdc/a4e23ef0afc3494fb80aff76384fe588/FLAG86fb91dca [2021-10-13 21:36:49,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cf0b9fdc/a4e23ef0afc3494fb80aff76384fe588 [2021-10-13 21:36:49,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 21:36:49,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 21:36:49,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 21:36:49,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 21:36:49,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 21:36:49,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:49,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14372505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49, skipping insertion in model container [2021-10-13 21:36:49,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:49,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 21:36:49,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:36:49,775 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/popl20-three-array-min.wvr.c[2663,2676] [2021-10-13 21:36:49,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:36:49,806 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 21:36:49,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 21:36:49,833 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/popl20-three-array-min.wvr.c[2663,2676] [2021-10-13 21:36:49,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:36:49,864 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 21:36:49,931 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/popl20-three-array-min.wvr.c[2663,2676] [2021-10-13 21:36:49,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 21:36:49,971 INFO L208 MainTranslator]: Completed translation [2021-10-13 21:36:49,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49 WrapperNode [2021-10-13 21:36:49,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 21:36:49,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 21:36:49,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 21:36:49,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 21:36:49,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 21:36:50,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 21:36:50,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 21:36:50,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 21:36:50,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 21:36:50,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 21:36:50,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 21:36:50,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 21:36:50,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (1/1) ... [2021-10-13 21:36:50,178 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 21:36:50,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 21:36:50,216 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 21:36:50,235 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 21:36:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 21:36:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 21:36:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 21:36:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 21:36:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 21:36:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 21:36:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 21:36:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 21:36:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 21:36:50,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 21:36:50,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 21:36:50,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 21:36:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 21:36:50,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 21:36:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 21:36:50,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 21:36:50,299 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 21:36:52,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 21:36:52,349 INFO L299 CfgBuilder]: Removed 44 assume(true) statements. [2021-10-13 21:36:52,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:36:52 BoogieIcfgContainer [2021-10-13 21:36:52,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 21:36:52,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 21:36:52,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 21:36:52,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 21:36:52,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:36:49" (1/3) ... [2021-10-13 21:36:52,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e175a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:36:52, skipping insertion in model container [2021-10-13 21:36:52,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:49" (2/3) ... [2021-10-13 21:36:52,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e175a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:36:52, skipping insertion in model container [2021-10-13 21:36:52,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:36:52" (3/3) ... [2021-10-13 21:36:52,362 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2021-10-13 21:36:52,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 21:36:52,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-10-13 21:36:52,370 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 21:36:52,415 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,415 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,416 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,416 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,416 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,417 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,418 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,418 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,419 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,419 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,419 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,420 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,421 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,421 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,423 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,423 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,425 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,426 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,427 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,427 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,428 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,430 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,431 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,431 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,431 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,431 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,432 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,432 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,432 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,433 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,435 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,435 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,435 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,436 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,436 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,436 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,436 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,437 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,437 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,437 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,438 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,438 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,438 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,439 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,439 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,440 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,440 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,440 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,440 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,441 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,441 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,441 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,441 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,441 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,442 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,442 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,443 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,443 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,443 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,443 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,443 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,444 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,444 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,445 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,445 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,446 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,446 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,446 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,447 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,447 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,448 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,448 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,449 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,449 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,449 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,449 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,450 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,451 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,451 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,451 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,452 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,452 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,452 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,454 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,454 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,454 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,455 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,455 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,456 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,456 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,457 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,459 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,459 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,459 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,460 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,460 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,460 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,460 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,461 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,461 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,461 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,461 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,462 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,462 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,462 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,462 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,462 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,463 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,463 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,463 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,464 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,464 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,464 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,464 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,465 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,465 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,465 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,465 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,466 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,466 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,467 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,467 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,468 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,469 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,469 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,470 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,470 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,470 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,471 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,477 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,484 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,485 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,486 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,486 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,488 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,488 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,488 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,488 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,489 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,489 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 21:36:52,496 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 21:36:52,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 21:36:52,558 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 21:36:52,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-10-13 21:36:52,583 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 21:36:52,597 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 305 transitions, 634 flow [2021-10-13 21:36:52,601 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 305 transitions, 634 flow [2021-10-13 21:36:52,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 289 places, 305 transitions, 634 flow [2021-10-13 21:36:52,801 INFO L129 PetriNetUnfolder]: 26/302 cut-off events. [2021-10-13 21:36:52,804 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 21:36:52,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 302 events. 26/302 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 445 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 245. Up to 3 conditions per place. [2021-10-13 21:36:52,829 INFO L116 LiptonReduction]: Number of co-enabled transitions 5962 [2021-10-13 21:38:16,870 INFO L131 LiptonReduction]: Checked pairs total: 11895 [2021-10-13 21:38:16,871 INFO L133 LiptonReduction]: Total number of compositions: 366 [2021-10-13 21:38:16,881 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 86 places, 86 transitions, 196 flow [2021-10-13 21:38:17,135 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5480 states, 4294 states have (on average 5.011877037727061) internal successors, (21521), 5479 states have internal predecessors, (21521), 0 states have call successors, (0), 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 21:38:17,161 INFO L276 IsEmpty]: Start isEmpty. Operand has 5480 states, 4294 states have (on average 5.011877037727061) internal successors, (21521), 5479 states have internal predecessors, (21521), 0 states have call successors, (0), 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 21:38:17,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:38:17,169 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:38:17,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:38:17,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:38:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:38:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash 39942, now seen corresponding path program 1 times [2021-10-13 21:38:17,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:38:17,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545936923] [2021-10-13 21:38:17,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:38:17,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:38:17,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:38:17,201 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 21:38:17,216 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 21:38:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:38:17,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 21:38:17,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:38:17,518 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:38:17,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-13 21:38:17,585 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 21:38:17,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:38:17,593 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 21:38:17,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:38:17,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545936923] [2021-10-13 21:38:17,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545936923] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:38:17,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:38:17,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 21:38:17,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558356840] [2021-10-13 21:38:17,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 21:38:17,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:38:17,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 21:38:17,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:38:17,645 INFO L87 Difference]: Start difference. First operand has 5480 states, 4294 states have (on average 5.011877037727061) internal successors, (21521), 5479 states have internal predecessors, (21521), 0 states have call successors, (0), 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 21:38:18,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:38:18,272 INFO L93 Difference]: Finished difference Result 3216 states and 12825 transitions. [2021-10-13 21:38:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 21:38:18,274 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 21:38:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:38:18,348 INFO L225 Difference]: With dead ends: 3216 [2021-10-13 21:38:18,348 INFO L226 Difference]: Without dead ends: 3216 [2021-10-13 21:38:18,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 21:38:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3216 states. [2021-10-13 21:38:18,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3216 to 3216. [2021-10-13 21:38:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 2764 states have (on average 4.640014471780029) internal successors, (12825), 3215 states have internal predecessors, (12825), 0 states have call successors, (0), 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 21:38:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 12825 transitions. [2021-10-13 21:38:18,593 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 12825 transitions. Word has length 2 [2021-10-13 21:38:18,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:38:18,594 INFO L470 AbstractCegarLoop]: Abstraction has 3216 states and 12825 transitions. [2021-10-13 21:38:18,594 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 21:38:18,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 12825 transitions. [2021-10-13 21:38:18,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 21:38:18,595 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:38:18,595 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 21:38:18,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 21:38:18,807 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 21:38:18,808 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:38:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:38:18,810 INFO L82 PathProgramCache]: Analyzing trace with hash 39940, now seen corresponding path program 1 times [2021-10-13 21:38:18,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:38:18,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779759588] [2021-10-13 21:38:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:38:18,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:38:18,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:38:18,813 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 21:38:18,817 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 21:38:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:38:18,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:38:18,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:38:18,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:38:18,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:38:19,242 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:38:19,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:38:19,335 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 21:38:19,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:38:19,446 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 21:38:19,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:38:19,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779759588] [2021-10-13 21:38:19,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779759588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:38:19,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:38:19,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 21:38:19,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528003173] [2021-10-13 21:38:19,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:38:19,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:38:19,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:38:19,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:38:19,451 INFO L87 Difference]: Start difference. First operand 3216 states and 12825 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 21:38:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:38:21,216 INFO L93 Difference]: Finished difference Result 6431 states and 25658 transitions. [2021-10-13 21:38:21,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:38:21,218 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 21:38:21,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:38:21,298 INFO L225 Difference]: With dead ends: 6431 [2021-10-13 21:38:21,298 INFO L226 Difference]: Without dead ends: 6431 [2021-10-13 21:38:21,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:38:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6431 states. [2021-10-13 21:38:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6431 to 3222. [2021-10-13 21:38:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2770 states have (on average 4.6386281588447655) internal successors, (12849), 3221 states have internal predecessors, (12849), 0 states have call successors, (0), 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 21:38:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 12849 transitions. [2021-10-13 21:38:21,501 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 12849 transitions. Word has length 2 [2021-10-13 21:38:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:38:21,502 INFO L470 AbstractCegarLoop]: Abstraction has 3222 states and 12849 transitions. [2021-10-13 21:38:21,502 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 21:38:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 12849 transitions. [2021-10-13 21:38:21,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:38:21,503 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:38:21,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 21:38:21,519 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 21:38:21,715 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 21:38:21,716 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:38:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:38:21,717 INFO L82 PathProgramCache]: Analyzing trace with hash 38690523, now seen corresponding path program 1 times [2021-10-13 21:38:21,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:38:21,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116039291] [2021-10-13 21:38:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:38:21,719 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:38:21,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:38:21,720 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 21:38:21,721 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 21:38:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:38:21,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:38:21,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:38:21,850 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 21:38:21,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:38:21,868 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 21:38:21,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:38:21,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116039291] [2021-10-13 21:38:21,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116039291] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:38:21,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:38:21,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 21:38:21,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733105832] [2021-10-13 21:38:21,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:38:21,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:38:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:38:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:38:21,873 INFO L87 Difference]: Start difference. First operand 3222 states and 12849 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 21:38:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:38:22,096 INFO L93 Difference]: Finished difference Result 3222 states and 12848 transitions. [2021-10-13 21:38:22,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:38:22,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 21:38:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:38:22,130 INFO L225 Difference]: With dead ends: 3222 [2021-10-13 21:38:22,131 INFO L226 Difference]: Without dead ends: 3222 [2021-10-13 21:38:22,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:38:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2021-10-13 21:38:22,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3222. [2021-10-13 21:38:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2770 states have (on average 4.638267148014441) internal successors, (12848), 3221 states have internal predecessors, (12848), 0 states have call successors, (0), 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 21:38:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 12848 transitions. [2021-10-13 21:38:22,337 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 12848 transitions. Word has length 4 [2021-10-13 21:38:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:38:22,338 INFO L470 AbstractCegarLoop]: Abstraction has 3222 states and 12848 transitions. [2021-10-13 21:38:22,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 21:38:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 12848 transitions. [2021-10-13 21:38:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 21:38:22,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:38:22,339 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-13 21:38:22,354 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 21:38:22,551 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 21:38:22,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:38:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:38:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash 38627748, now seen corresponding path program 1 times [2021-10-13 21:38:22,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:38:22,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529840006] [2021-10-13 21:38:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:38:22,555 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:38:22,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:38:22,558 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 21:38:22,559 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 21:38:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:38:22,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:38:22,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:38:22,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:38:22,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:38:22,992 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:38:22,993 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:38:23,200 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 21:38:23,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:38:23,791 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 21:38:23,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:38:23,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529840006] [2021-10-13 21:38:23,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529840006] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:38:23,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:38:23,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-13 21:38:23,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256273147] [2021-10-13 21:38:23,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:38:23,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:38:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:38:23,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:38:23,795 INFO L87 Difference]: Start difference. First operand 3222 states and 12848 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 21:38:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:38:36,423 INFO L93 Difference]: Finished difference Result 19278 states and 76939 transitions. [2021-10-13 21:38:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:38:36,425 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 21:38:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:38:36,608 INFO L225 Difference]: With dead ends: 19278 [2021-10-13 21:38:36,608 INFO L226 Difference]: Without dead ends: 19278 [2021-10-13 21:38:36,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1004.7ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:38:36,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2021-10-13 21:38:37,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 3233. [2021-10-13 21:38:37,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3233 states, 2781 states have (on average 4.636461704422869) internal successors, (12894), 3232 states have internal predecessors, (12894), 0 states have call successors, (0), 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 21:38:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 12894 transitions. [2021-10-13 21:38:37,259 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 12894 transitions. Word has length 4 [2021-10-13 21:38:37,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:38:37,259 INFO L470 AbstractCegarLoop]: Abstraction has 3233 states and 12894 transitions. [2021-10-13 21:38:37,259 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 21:38:37,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 12894 transitions. [2021-10-13 21:38:37,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 21:38:37,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:38:37,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 21:38:37,275 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 21:38:37,475 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 21:38:37,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:38:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:38:37,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1197530632, now seen corresponding path program 1 times [2021-10-13 21:38:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:38:37,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901734465] [2021-10-13 21:38:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:38:37,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:38:37,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:38:37,488 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 21:38:37,505 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 21:38:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:38:37,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 21:38:37,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:38:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:38:37,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:38:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:38:37,789 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:38:37,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901734465] [2021-10-13 21:38:37,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901734465] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:38:37,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:38:37,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-13 21:38:37,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694385490] [2021-10-13 21:38:37,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:38:37,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:38:37,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:38:37,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:38:37,791 INFO L87 Difference]: Start difference. First operand 3233 states and 12894 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 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 21:38:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:38:39,617 INFO L93 Difference]: Finished difference Result 12864 states and 51325 transitions. [2021-10-13 21:38:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 21:38:39,618 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 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 5 [2021-10-13 21:38:39,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:38:39,721 INFO L225 Difference]: With dead ends: 12864 [2021-10-13 21:38:39,722 INFO L226 Difference]: Without dead ends: 12864 [2021-10-13 21:38:39,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 217.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-13 21:38:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12864 states. [2021-10-13 21:38:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12864 to 3235. [2021-10-13 21:38:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 2783 states have (on average 4.6338483650736615) internal successors, (12896), 3234 states have internal predecessors, (12896), 0 states have call successors, (0), 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 21:38:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 12896 transitions. [2021-10-13 21:38:40,274 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 12896 transitions. Word has length 5 [2021-10-13 21:38:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:38:40,275 INFO L470 AbstractCegarLoop]: Abstraction has 3235 states and 12896 transitions. [2021-10-13 21:38:40,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 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 21:38:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 12896 transitions. [2021-10-13 21:38:40,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:38:40,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:38:40,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:38:40,297 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 21:38:40,493 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 21:38:40,493 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:38:40,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:38:40,495 INFO L82 PathProgramCache]: Analyzing trace with hash -227476425, now seen corresponding path program 1 times [2021-10-13 21:38:40,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:38:40,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299830995] [2021-10-13 21:38:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:38:40,497 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:38:40,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:38:40,507 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 21:38:40,547 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 21:38:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:38:40,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 21:38:40,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:38:40,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:38:40,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:38:40,984 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:38:40,984 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:38:41,079 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:38:41,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:38:41,389 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:38:41,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2021-10-13 21:38:41,406 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 21:38:41,407 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 33 treesize of output 33 [2021-10-13 21:38:41,708 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-13 21:38:41,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 43 [2021-10-13 21:38:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:38:41,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:38:42,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:38:42,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:38:42,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299830995] [2021-10-13 21:38:42,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299830995] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:38:42,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:38:42,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 21:38:42,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748944030] [2021-10-13 21:38:42,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:38:42,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:38:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:38:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:38:42,544 INFO L87 Difference]: Start difference. First operand 3235 states and 12896 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:12,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:12,735 INFO L93 Difference]: Finished difference Result 19295 states and 77006 transitions. [2021-10-13 21:39:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 21:39:12,737 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-13 21:39:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:12,966 INFO L225 Difference]: With dead ends: 19295 [2021-10-13 21:39:12,967 INFO L226 Difference]: Without dead ends: 19295 [2021-10-13 21:39:12,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 15115.6ms TimeCoverageRelationStatistics Valid=121, Invalid=258, Unknown=1, NotChecked=0, Total=380 [2021-10-13 21:39:13,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19295 states. [2021-10-13 21:39:13,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19295 to 3251. [2021-10-13 21:39:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 2799 states have (on average 4.630225080385852) internal successors, (12960), 3250 states have internal predecessors, (12960), 0 states have call successors, (0), 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 21:39:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 12960 transitions. [2021-10-13 21:39:13,479 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 12960 transitions. Word has length 7 [2021-10-13 21:39:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:13,481 INFO L470 AbstractCegarLoop]: Abstraction has 3251 states and 12960 transitions. [2021-10-13 21:39:13,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 12960 transitions. [2021-10-13 21:39:13,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:39:13,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:13,484 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:39:13,505 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 21:39:13,699 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 21:39:13,700 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:39:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:13,700 INFO L82 PathProgramCache]: Analyzing trace with hash -227476424, now seen corresponding path program 1 times [2021-10-13 21:39:13,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:13,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418503813] [2021-10-13 21:39:13,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:13,702 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:13,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:13,703 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 21:39:13,704 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 21:39:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:13,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 21:39:13,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:14,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-13 21:39:14,111 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:39:14,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 25 [2021-10-13 21:39:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:39:14,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:39:14,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:14,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418503813] [2021-10-13 21:39:14,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418503813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:39:14,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:39:14,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 21:39:14,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142535901] [2021-10-13 21:39:14,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:39:14,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:14,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:39:14,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:39:14,599 INFO L87 Difference]: Start difference. First operand 3251 states and 12960 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:20,441 INFO L93 Difference]: Finished difference Result 12877 states and 51379 transitions. [2021-10-13 21:39:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 21:39:20,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-13 21:39:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:20,510 INFO L225 Difference]: With dead ends: 12877 [2021-10-13 21:39:20,511 INFO L226 Difference]: Without dead ends: 12877 [2021-10-13 21:39:20,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2019.8ms TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2021-10-13 21:39:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12877 states. [2021-10-13 21:39:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12877 to 3251. [2021-10-13 21:39:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3251 states, 2800 states have (on average 4.623214285714286) internal successors, (12945), 3250 states have internal predecessors, (12945), 0 states have call successors, (0), 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 21:39:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3251 states to 3251 states and 12945 transitions. [2021-10-13 21:39:20,794 INFO L78 Accepts]: Start accepts. Automaton has 3251 states and 12945 transitions. Word has length 7 [2021-10-13 21:39:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:20,794 INFO L470 AbstractCegarLoop]: Abstraction has 3251 states and 12945 transitions. [2021-10-13 21:39:20,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 3251 states and 12945 transitions. [2021-10-13 21:39:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:39:20,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:20,795 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:39:20,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-13 21:39:21,008 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 21:39:21,009 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:39:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash -227476423, now seen corresponding path program 1 times [2021-10-13 21:39:21,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:21,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993864604] [2021-10-13 21:39:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:21,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:21,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:21,015 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 21:39:21,017 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 21:39:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:21,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 21:39:21,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:21,247 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:39:21,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-13 21:39:21,310 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 21:39:21,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-13 21:39:21,417 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-13 21:39:21,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 47 [2021-10-13 21:39:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:39:21,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:39:23,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:23,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993864604] [2021-10-13 21:39:23,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993864604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:23,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:23,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 21:39:23,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337447958] [2021-10-13 21:39:23,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:39:23,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:23,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:39:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-10-13 21:39:23,609 INFO L87 Difference]: Start difference. First operand 3251 states and 12945 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:24,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:24,073 INFO L93 Difference]: Finished difference Result 2642 states and 10517 transitions. [2021-10-13 21:39:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:39:24,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-13 21:39:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:24,085 INFO L225 Difference]: With dead ends: 2642 [2021-10-13 21:39:24,085 INFO L226 Difference]: Without dead ends: 2642 [2021-10-13 21:39:24,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2107.9ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-13 21:39:24,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2021-10-13 21:39:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2642. [2021-10-13 21:39:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2321 states have (on average 4.531236535975872) internal successors, (10517), 2641 states have internal predecessors, (10517), 0 states have call successors, (0), 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 21:39:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 10517 transitions. [2021-10-13 21:39:24,247 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 10517 transitions. Word has length 7 [2021-10-13 21:39:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:24,247 INFO L470 AbstractCegarLoop]: Abstraction has 2642 states and 10517 transitions. [2021-10-13 21:39:24,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 10517 transitions. [2021-10-13 21:39:24,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:39:24,248 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:24,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:39:24,267 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 21:39:24,461 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 21:39:24,464 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:39:24,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:24,465 INFO L82 PathProgramCache]: Analyzing trace with hash -227476422, now seen corresponding path program 1 times [2021-10-13 21:39:24,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:24,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102315763] [2021-10-13 21:39:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:24,466 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:24,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:24,467 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 21:39:24,468 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 21:39:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:24,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 21:39:24,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:24,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 21:39:24,684 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 21:39:24,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-13 21:39:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:39:24,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:39:28,833 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:28,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102315763] [2021-10-13 21:39:28,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102315763] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:28,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:28,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 21:39:28,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953897605] [2021-10-13 21:39:28,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:39:28,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:28,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:39:28,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=17, Unknown=2, NotChecked=0, Total=30 [2021-10-13 21:39:28,835 INFO L87 Difference]: Start difference. First operand 2642 states and 10517 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:39:29,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:29,226 INFO L93 Difference]: Finished difference Result 2097 states and 8339 transitions. [2021-10-13 21:39:29,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:39:29,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 7 [2021-10-13 21:39:29,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:29,235 INFO L225 Difference]: With dead ends: 2097 [2021-10-13 21:39:29,235 INFO L226 Difference]: Without dead ends: 2097 [2021-10-13 21:39:29,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4084.1ms TimeCoverageRelationStatistics Valid=17, Invalid=23, Unknown=2, NotChecked=0, Total=42 [2021-10-13 21:39:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-10-13 21:39:29,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 2097. [2021-10-13 21:39:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1884 states have (on average 4.426220806794055) internal successors, (8339), 2096 states have internal predecessors, (8339), 0 states have call successors, (0), 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 21:39:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 8339 transitions. [2021-10-13 21:39:29,345 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 8339 transitions. Word has length 7 [2021-10-13 21:39:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:29,345 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 8339 transitions. [2021-10-13 21:39:29,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 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 21:39:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 8339 transitions. [2021-10-13 21:39:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:39:29,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:29,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:39:29,371 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 21:39:29,561 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 21:39:29,561 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:39:29,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:29,563 INFO L82 PathProgramCache]: Analyzing trace with hash -227476387, now seen corresponding path program 1 times [2021-10-13 21:39:29,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:29,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038684800] [2021-10-13 21:39:29,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:29,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:29,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:29,565 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 21:39:29,570 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 21:39:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:29,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:39:29,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:29,913 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-13 21:39:29,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 54 [2021-10-13 21:39:30,165 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-13 21:39:30,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 54 treesize of output 77 [2021-10-13 21:39:30,590 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-13 21:39:30,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 116 [2021-10-13 21:39:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:39:31,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:39:31,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:31,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038684800] [2021-10-13 21:39:31,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038684800] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:39:31,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:39:31,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 21:39:31,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345982896] [2021-10-13 21:39:31,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:39:31,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:39:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:39:31,232 INFO L87 Difference]: Start difference. First operand 2097 states and 8339 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:32,599 INFO L93 Difference]: Finished difference Result 1704 states and 6547 transitions. [2021-10-13 21:39:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:39:32,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-13 21:39:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:32,605 INFO L225 Difference]: With dead ends: 1704 [2021-10-13 21:39:32,605 INFO L226 Difference]: Without dead ends: 1704 [2021-10-13 21:39:32,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 959.5ms TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-10-13 21:39:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2021-10-13 21:39:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1704. [2021-10-13 21:39:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1537 states have (on average 4.259596616785947) internal successors, (6547), 1703 states have internal predecessors, (6547), 0 states have call successors, (0), 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 21:39:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 6547 transitions. [2021-10-13 21:39:32,682 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 6547 transitions. Word has length 7 [2021-10-13 21:39:32,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:32,682 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 6547 transitions. [2021-10-13 21:39:32,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 6547 transitions. [2021-10-13 21:39:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 21:39:32,683 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:32,683 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:39:32,706 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 21:39:32,897 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 21:39:32,898 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:39:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:32,899 INFO L82 PathProgramCache]: Analyzing trace with hash -227476385, now seen corresponding path program 1 times [2021-10-13 21:39:32,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:32,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425567637] [2021-10-13 21:39:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:39:32,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:32,901 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 21:39:32,938 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 21:39:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:39:33,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 21:39:33,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:33,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:39:33,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:39:33,621 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:39:33,621 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 5 case distinctions, treesize of input 64 treesize of output 114 [2021-10-13 21:39:33,733 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-13 21:39:33,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 127 [2021-10-13 21:39:35,487 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-13 21:39:35,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 104 treesize of output 115 [2021-10-13 21:39:35,603 INFO L354 Elim1Store]: treesize reduction 108, result has 31.2 percent of original size [2021-10-13 21:39:35,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 103 treesize of output 140 [2021-10-13 21:39:36,551 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-13 21:39:36,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 140 [2021-10-13 21:39:36,623 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-10-13 21:39:36,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 128 treesize of output 134 [2021-10-13 21:39:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:39:37,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:39:40,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:40,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425567637] [2021-10-13 21:39:40,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425567637] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:39:40,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:39:40,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 21:39:40,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707047098] [2021-10-13 21:39:40,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:39:40,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:40,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:39:40,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=60, Unknown=1, NotChecked=0, Total=90 [2021-10-13 21:39:40,692 INFO L87 Difference]: Start difference. First operand 1704 states and 6547 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:54,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:39:54,748 INFO L93 Difference]: Finished difference Result 2580 states and 9432 transitions. [2021-10-13 21:39:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 21:39:54,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-13 21:39:54,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:39:54,758 INFO L225 Difference]: With dead ends: 2580 [2021-10-13 21:39:54,758 INFO L226 Difference]: Without dead ends: 2580 [2021-10-13 21:39:54,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 13972.8ms TimeCoverageRelationStatistics Valid=87, Invalid=151, Unknown=2, NotChecked=0, Total=240 [2021-10-13 21:39:54,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-10-13 21:39:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1311. [2021-10-13 21:39:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1190 states have (on average 3.995798319327731) internal successors, (4755), 1310 states have internal predecessors, (4755), 0 states have call successors, (0), 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 21:39:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 4755 transitions. [2021-10-13 21:39:54,806 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 4755 transitions. Word has length 7 [2021-10-13 21:39:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:39:54,807 INFO L470 AbstractCegarLoop]: Abstraction has 1311 states and 4755 transitions. [2021-10-13 21:39:54,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:39:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 4755 transitions. [2021-10-13 21:39:54,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 21:39:54,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:39:54,808 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-13 21:39:54,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 21:39:55,021 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 21:39:55,022 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:39:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:39:55,023 INFO L82 PathProgramCache]: Analyzing trace with hash -225817372, now seen corresponding path program 2 times [2021-10-13 21:39:55,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:39:55,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372412663] [2021-10-13 21:39:55,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:39:55,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:39:55,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:39:55,026 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 21:39:55,027 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 21:39:55,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:39:55,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:39:55,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 21:39:55,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:39:55,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:39:55,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:39:55,524 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:39:55,525 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:39:55,947 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 21:39:55,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:39:58,070 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 21:39:58,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:39:58,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372412663] [2021-10-13 21:39:58,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372412663] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:39:58,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:39:58,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-13 21:39:58,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369444053] [2021-10-13 21:39:58,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-13 21:39:58,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:39:58,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 21:39:58,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:39:58,072 INFO L87 Difference]: Start difference. First operand 1311 states and 4755 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 21:40:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:35,406 INFO L93 Difference]: Finished difference Result 10207 states and 37523 transitions. [2021-10-13 21:40:35,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:40:35,408 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 21:40:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:35,447 INFO L225 Difference]: With dead ends: 10207 [2021-10-13 21:40:35,448 INFO L226 Difference]: Without dead ends: 10207 [2021-10-13 21:40:35,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 6935.8ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:40:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10207 states. [2021-10-13 21:40:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10207 to 1331. [2021-10-13 21:40:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1210 states have (on average 3.9652892561983473) internal successors, (4798), 1330 states have internal predecessors, (4798), 0 states have call successors, (0), 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 21:40:35,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 4798 transitions. [2021-10-13 21:40:35,577 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 4798 transitions. Word has length 8 [2021-10-13 21:40:35,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:35,577 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 4798 transitions. [2021-10-13 21:40:35,578 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 21:40:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 4798 transitions. [2021-10-13 21:40:35,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:40:35,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:35,579 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:35,599 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 21:40:35,793 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 21:40:35,794 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:40:35,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash 438552923, now seen corresponding path program 1 times [2021-10-13 21:40:35,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:35,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047731210] [2021-10-13 21:40:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:35,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:35,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:35,797 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 21:40:35,802 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 21:40:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:36,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 21:40:36,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:36,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:40:36,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:40:36,416 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:40:36,417 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:40:36,426 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 91 treesize of output 89 [2021-10-13 21:40:37,717 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-13 21:40:37,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 62 [2021-10-13 21:40:38,263 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-13 21:40:38,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 53 treesize of output 67 [2021-10-13 21:40:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:40:38,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:40:39,893 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:39,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047731210] [2021-10-13 21:40:39,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047731210] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:40:39,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:40:39,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 21:40:39,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009747638] [2021-10-13 21:40:39,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 21:40:39,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 21:40:39,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:40:39,897 INFO L87 Difference]: Start difference. First operand 1331 states and 4798 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:40:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:47,275 INFO L93 Difference]: Finished difference Result 3697 states and 13613 transitions. [2021-10-13 21:40:47,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 21:40:47,277 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:40:47,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:47,288 INFO L225 Difference]: With dead ends: 3697 [2021-10-13 21:40:47,288 INFO L226 Difference]: Without dead ends: 3697 [2021-10-13 21:40:47,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 4404.4ms TimeCoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2021-10-13 21:40:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2021-10-13 21:40:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 1274. [2021-10-13 21:40:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1274 states, 1171 states have (on average 3.9444918872758326) internal successors, (4619), 1273 states have internal predecessors, (4619), 0 states have call successors, (0), 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 21:40:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1274 states to 1274 states and 4619 transitions. [2021-10-13 21:40:47,334 INFO L78 Accepts]: Start accepts. Automaton has 1274 states and 4619 transitions. Word has length 9 [2021-10-13 21:40:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:47,334 INFO L470 AbstractCegarLoop]: Abstraction has 1274 states and 4619 transitions. [2021-10-13 21:40:47,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:40:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states and 4619 transitions. [2021-10-13 21:40:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 21:40:47,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:47,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:47,348 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 21:40:47,536 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 21:40:47,537 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:40:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:47,537 INFO L82 PathProgramCache]: Analyzing trace with hash 438552924, now seen corresponding path program 1 times [2021-10-13 21:40:47,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:47,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446643556] [2021-10-13 21:40:47,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:47,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:47,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:47,541 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 21:40:47,544 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 21:40:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:47,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 21:40:47,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:47,971 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:40:47,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-13 21:40:48,259 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-13 21:40:48,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 73 [2021-10-13 21:40:48,568 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-13 21:40:48,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 116 [2021-10-13 21:40:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:40:49,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:49,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:40:49,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:49,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446643556] [2021-10-13 21:40:49,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446643556] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:49,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:49,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 21:40:49,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837322030] [2021-10-13 21:40:49,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:40:49,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:49,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:40:49,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:40:49,537 INFO L87 Difference]: Start difference. First operand 1274 states and 4619 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:40:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:50,223 INFO L93 Difference]: Finished difference Result 1217 states and 4440 transitions. [2021-10-13 21:40:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:40:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:40:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:50,228 INFO L225 Difference]: With dead ends: 1217 [2021-10-13 21:40:50,228 INFO L226 Difference]: Without dead ends: 1217 [2021-10-13 21:40:50,228 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 490.9ms TimeCoverageRelationStatistics Valid=51, Invalid=59, Unknown=0, NotChecked=0, Total=110 [2021-10-13 21:40:50,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-10-13 21:40:50,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2021-10-13 21:40:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1132 states have (on average 3.92226148409894) internal successors, (4440), 1216 states have internal predecessors, (4440), 0 states have call successors, (0), 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 21:40:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 4440 transitions. [2021-10-13 21:40:50,263 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 4440 transitions. Word has length 9 [2021-10-13 21:40:50,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:50,264 INFO L470 AbstractCegarLoop]: Abstraction has 1217 states and 4440 transitions. [2021-10-13 21:40:50,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:40:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 4440 transitions. [2021-10-13 21:40:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 21:40:50,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:50,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:50,289 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 21:40:50,487 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 21:40:50,488 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:40:50,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:50,488 INFO L82 PathProgramCache]: Analyzing trace with hash 710228505, now seen corresponding path program 1 times [2021-10-13 21:40:50,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:50,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734505456] [2021-10-13 21:40:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:50,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:50,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:50,491 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 21:40:50,492 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 21:40:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:50,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:40:50,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:40:50,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:51,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:40:51,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:51,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734505456] [2021-10-13 21:40:51,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734505456] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:40:51,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:40:51,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 21:40:51,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703788513] [2021-10-13 21:40:51,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:40:51,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:51,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:40:51,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:40:51,023 INFO L87 Difference]: Start difference. First operand 1217 states and 4440 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 21:40:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:53,332 INFO L93 Difference]: Finished difference Result 2246 states and 7718 transitions. [2021-10-13 21:40:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 21:40:53,333 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 10 [2021-10-13 21:40:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:53,340 INFO L225 Difference]: With dead ends: 2246 [2021-10-13 21:40:53,341 INFO L226 Difference]: Without dead ends: 2246 [2021-10-13 21:40:53,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 373.1ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-13 21:40:53,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-10-13 21:40:53,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1474. [2021-10-13 21:40:53,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1389 states have (on average 3.8581713462922966) internal successors, (5359), 1473 states have internal predecessors, (5359), 0 states have call successors, (0), 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 21:40:53,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 5359 transitions. [2021-10-13 21:40:53,382 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 5359 transitions. Word has length 10 [2021-10-13 21:40:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:53,382 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 5359 transitions. [2021-10-13 21:40:53,383 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 21:40:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 5359 transitions. [2021-10-13 21:40:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 21:40:53,391 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:53,391 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:53,408 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 21:40:53,604 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 21:40:53,605 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:40:53,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:53,605 INFO L82 PathProgramCache]: Analyzing trace with hash 2089985930, now seen corresponding path program 2 times [2021-10-13 21:40:53,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:53,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359679779] [2021-10-13 21:40:53,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:40:53,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:53,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:53,608 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 21:40:53,623 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 21:40:53,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:40:53,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:40:53,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 21:40:53,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:53,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:40:53,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:40:54,140 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:40:54,140 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:40:54,244 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:40:54,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:40:54,468 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:40:54,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-13 21:40:54,485 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 21:40:54,485 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 32 treesize of output 32 [2021-10-13 21:40:54,656 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-13 21:40:54,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 42 [2021-10-13 21:40:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 21:40:54,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 21:40:55,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:55,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359679779] [2021-10-13 21:40:55,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359679779] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:55,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:55,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 21:40:55,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989258420] [2021-10-13 21:40:55,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 21:40:55,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:55,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 21:40:55,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-13 21:40:55,476 INFO L87 Difference]: Start difference. First operand 1474 states and 5359 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:40:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:40:58,046 INFO L93 Difference]: Finished difference Result 1473 states and 5349 transitions. [2021-10-13 21:40:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:40:58,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:40:58,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:40:58,051 INFO L225 Difference]: With dead ends: 1473 [2021-10-13 21:40:58,051 INFO L226 Difference]: Without dead ends: 1473 [2021-10-13 21:40:58,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2504.1ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-10-13 21:40:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2021-10-13 21:40:58,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1452. [2021-10-13 21:40:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1368 states have (on average 3.8808479532163744) internal successors, (5309), 1451 states have internal predecessors, (5309), 0 states have call successors, (0), 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 21:40:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 5309 transitions. [2021-10-13 21:40:58,085 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 5309 transitions. Word has length 10 [2021-10-13 21:40:58,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:40:58,085 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 5309 transitions. [2021-10-13 21:40:58,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:40:58,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 5309 transitions. [2021-10-13 21:40:58,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 21:40:58,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:40:58,086 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:40:58,095 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 21:40:58,286 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 21:40:58,287 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:40:58,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:40:58,288 INFO L82 PathProgramCache]: Analyzing trace with hash 542590740, now seen corresponding path program 1 times [2021-10-13 21:40:58,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:40:58,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067442971] [2021-10-13 21:40:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:40:58,289 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:40:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:40:58,291 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 21:40:58,292 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 21:40:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:40:58,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 21:40:58,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:40:58,704 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:40:58,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-13 21:40:58,792 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-13 21:40:58,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 36 [2021-10-13 21:40:58,913 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-13 21:40:58,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 61 [2021-10-13 21:40:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:40:59,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:40:59,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:40:59,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:40:59,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067442971] [2021-10-13 21:40:59,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067442971] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:40:59,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:40:59,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 21:40:59,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973010257] [2021-10-13 21:40:59,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:40:59,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:40:59,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:40:59,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:40:59,550 INFO L87 Difference]: Start difference. First operand 1452 states and 5309 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:41:00,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:00,091 INFO L93 Difference]: Finished difference Result 1375 states and 5069 transitions. [2021-10-13 21:41:00,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 21:41:00,092 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 11 [2021-10-13 21:41:00,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:00,095 INFO L225 Difference]: With dead ends: 1375 [2021-10-13 21:41:00,096 INFO L226 Difference]: Without dead ends: 1375 [2021-10-13 21:41:00,096 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 320.9ms TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2021-10-13 21:41:00,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2021-10-13 21:41:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1375. [2021-10-13 21:41:00,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1309 states have (on average 3.8724216959511075) internal successors, (5069), 1374 states have internal predecessors, (5069), 0 states have call successors, (0), 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 21:41:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 5069 transitions. [2021-10-13 21:41:00,125 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 5069 transitions. Word has length 11 [2021-10-13 21:41:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:00,125 INFO L470 AbstractCegarLoop]: Abstraction has 1375 states and 5069 transitions. [2021-10-13 21:41:00,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:41:00,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 5069 transitions. [2021-10-13 21:41:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 21:41:00,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:00,126 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:00,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-10-13 21:41:00,334 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 21:41:00,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:41:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash 542590741, now seen corresponding path program 1 times [2021-10-13 21:41:00,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:00,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449519668] [2021-10-13 21:41:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:41:00,337 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:00,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:00,339 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 21:41:00,342 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 21:41:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:00,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 21:41:00,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:00,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:41:00,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:41:01,024 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-13 21:41:01,024 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 5 case distinctions, treesize of input 42 treesize of output 80 [2021-10-13 21:41:01,030 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 83 treesize of output 81 [2021-10-13 21:41:01,586 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-13 21:41:01,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 54 [2021-10-13 21:41:02,038 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-13 21:41:02,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 71 [2021-10-13 21:41:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:41:03,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:41:04,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:04,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449519668] [2021-10-13 21:41:04,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449519668] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:41:04,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:41:04,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 21:41:04,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899543856] [2021-10-13 21:41:04,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:41:04,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:41:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:41:04,027 INFO L87 Difference]: Start difference. First operand 1375 states and 5069 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:41:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:07,482 INFO L93 Difference]: Finished difference Result 1757 states and 6325 transitions. [2021-10-13 21:41:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:41:07,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 11 [2021-10-13 21:41:07,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:07,487 INFO L225 Difference]: With dead ends: 1757 [2021-10-13 21:41:07,488 INFO L226 Difference]: Without dead ends: 1757 [2021-10-13 21:41:07,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1935.0ms TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2021-10-13 21:41:07,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2021-10-13 21:41:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1298. [2021-10-13 21:41:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1250 states have (on average 3.8632) internal successors, (4829), 1297 states have internal predecessors, (4829), 0 states have call successors, (0), 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 21:41:07,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 4829 transitions. [2021-10-13 21:41:07,514 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 4829 transitions. Word has length 11 [2021-10-13 21:41:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:07,514 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 4829 transitions. [2021-10-13 21:41:07,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:41:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 4829 transitions. [2021-10-13 21:41:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 21:41:07,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:07,515 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:07,527 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 21:41:07,717 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 21:41:07,718 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:41:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:07,718 INFO L82 PathProgramCache]: Analyzing trace with hash -359565311, now seen corresponding path program 1 times [2021-10-13 21:41:07,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:07,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766163381] [2021-10-13 21:41:07,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:41:07,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:07,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:07,721 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 21:41:07,723 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 21:41:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:08,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 21:41:08,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:41:08,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 21:41:08,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:08,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766163381] [2021-10-13 21:41:08,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766163381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:41:08,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:41:08,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-13 21:41:08,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83525849] [2021-10-13 21:41:08,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:41:08,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:41:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:41:08,370 INFO L87 Difference]: Start difference. First operand 1298 states and 4829 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:41:09,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:09,657 INFO L93 Difference]: Finished difference Result 1489 states and 5204 transitions. [2021-10-13 21:41:09,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 21:41:09,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:41:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:09,681 INFO L225 Difference]: With dead ends: 1489 [2021-10-13 21:41:09,681 INFO L226 Difference]: Without dead ends: 1489 [2021-10-13 21:41:09,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 368.6ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-13 21:41:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2021-10-13 21:41:09,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1232. [2021-10-13 21:41:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1184 states have (on average 3.8048986486486487) internal successors, (4505), 1231 states have internal predecessors, (4505), 0 states have call successors, (0), 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 21:41:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 4505 transitions. [2021-10-13 21:41:09,705 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 4505 transitions. Word has length 12 [2021-10-13 21:41:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:09,705 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 4505 transitions. [2021-10-13 21:41:09,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:41:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 4505 transitions. [2021-10-13 21:41:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 21:41:09,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:09,706 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:09,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 21:41:09,920 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 21:41:09,921 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:41:09,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:09,923 INFO L82 PathProgramCache]: Analyzing trace with hash -18272011, now seen corresponding path program 2 times [2021-10-13 21:41:09,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:09,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447343083] [2021-10-13 21:41:09,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:41:09,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:09,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:09,925 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 21:41:09,927 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 21:41:10,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:41:10,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:41:10,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 21:41:10,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:10,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:41:10,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:41:10,514 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:41:10,515 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:41:10,630 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:41:10,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:41:10,796 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:41:10,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-10-13 21:41:10,813 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 21:41:10,813 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 31 treesize of output 31 [2021-10-13 21:41:11,037 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-13 21:41:11,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 36 [2021-10-13 21:41:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:41:12,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:41:13,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:13,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447343083] [2021-10-13 21:41:13,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447343083] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:13,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:13,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-13 21:41:13,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384476483] [2021-10-13 21:41:13,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 21:41:13,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:13,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 21:41:13,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:41:13,740 INFO L87 Difference]: Start difference. First operand 1232 states and 4505 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 21:41:16,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:16,394 INFO L93 Difference]: Finished difference Result 2144 states and 8236 transitions. [2021-10-13 21:41:16,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 21:41:16,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 13 [2021-10-13 21:41:16,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:16,402 INFO L225 Difference]: With dead ends: 2144 [2021-10-13 21:41:16,402 INFO L226 Difference]: Without dead ends: 2144 [2021-10-13 21:41:16,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2475.6ms TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2021-10-13 21:41:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-10-13 21:41:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1802. [2021-10-13 21:41:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1754 states have (on average 4.14709236031927) internal successors, (7274), 1801 states have internal predecessors, (7274), 0 states have call successors, (0), 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 21:41:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 7274 transitions. [2021-10-13 21:41:16,442 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 7274 transitions. Word has length 13 [2021-10-13 21:41:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:16,442 INFO L470 AbstractCegarLoop]: Abstraction has 1802 states and 7274 transitions. [2021-10-13 21:41:16,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 21:41:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 7274 transitions. [2021-10-13 21:41:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 21:41:16,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:16,443 INFO L512 BasicCegarLoop]: trace histogram [8, 2, 1, 1, 1] [2021-10-13 21:41:16,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-13 21:41:16,644 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 21:41:16,644 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:41:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:16,645 INFO L82 PathProgramCache]: Analyzing trace with hash 754138982, now seen corresponding path program 1 times [2021-10-13 21:41:16,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:16,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066678130] [2021-10-13 21:41:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:41:16,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:16,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:16,647 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 21:41:16,649 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 21:41:16,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:16,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 21:41:16,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:17,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-10-13 21:41:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:17,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:41:21,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:21,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066678130] [2021-10-13 21:41:21,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066678130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:41:21,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:41:21,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2021-10-13 21:41:21,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863782725] [2021-10-13 21:41:21,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 21:41:21,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 21:41:21,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-10-13 21:41:21,077 INFO L87 Difference]: Start difference. First operand 1802 states and 7274 transitions. Second operand has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 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 21:41:38,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:38,486 INFO L93 Difference]: Finished difference Result 10479 states and 42661 transitions. [2021-10-13 21:41:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 21:41:38,487 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 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 13 [2021-10-13 21:41:38,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:38,535 INFO L225 Difference]: With dead ends: 10479 [2021-10-13 21:41:38,535 INFO L226 Difference]: Without dead ends: 10479 [2021-10-13 21:41:38,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 6051.6ms TimeCoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 21:41:38,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10479 states. [2021-10-13 21:41:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10479 to 1812. [2021-10-13 21:41:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1764 states have (on average 4.132086167800454) internal successors, (7289), 1811 states have internal predecessors, (7289), 0 states have call successors, (0), 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 21:41:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 7289 transitions. [2021-10-13 21:41:38,669 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 7289 transitions. Word has length 13 [2021-10-13 21:41:38,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:38,669 INFO L470 AbstractCegarLoop]: Abstraction has 1812 states and 7289 transitions. [2021-10-13 21:41:38,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.04) internal successors, (26), 24 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 21:41:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 7289 transitions. [2021-10-13 21:41:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 21:41:38,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:38,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:38,682 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 21:41:38,878 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 21:41:38,879 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:41:38,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:38,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1935342274, now seen corresponding path program 1 times [2021-10-13 21:41:38,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:38,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906867629] [2021-10-13 21:41:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:41:38,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:38,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:38,884 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 21:41:38,888 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 21:41:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:39,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 21:41:39,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:39,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:41:39,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 21:41:39,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:39,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906867629] [2021-10-13 21:41:39,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906867629] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:41:39,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:41:39,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 21:41:39,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345744612] [2021-10-13 21:41:39,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 21:41:39,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 21:41:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:41:39,349 INFO L87 Difference]: Start difference. First operand 1812 states and 7289 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:41:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:41:40,023 INFO L93 Difference]: Finished difference Result 2630 states and 10479 transitions. [2021-10-13 21:41:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 21:41:40,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:41:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:41:40,034 INFO L225 Difference]: With dead ends: 2630 [2021-10-13 21:41:40,034 INFO L226 Difference]: Without dead ends: 2630 [2021-10-13 21:41:40,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 21:41:40,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-10-13 21:41:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2116. [2021-10-13 21:41:40,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 2068 states have (on average 4.158123791102515) internal successors, (8599), 2115 states have internal predecessors, (8599), 0 states have call successors, (0), 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 21:41:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 8599 transitions. [2021-10-13 21:41:40,091 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 8599 transitions. Word has length 14 [2021-10-13 21:41:40,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:41:40,091 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 8599 transitions. [2021-10-13 21:41:40,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:41:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 8599 transitions. [2021-10-13 21:41:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 21:41:40,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:41:40,093 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:41:40,109 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 21:41:40,306 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 21:41:40,307 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:41:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:41:40,307 INFO L82 PathProgramCache]: Analyzing trace with hash -566425091, now seen corresponding path program 1 times [2021-10-13 21:41:40,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:41:40,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964976748] [2021-10-13 21:41:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:41:40,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:41:40,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:41:40,311 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 21:41:40,320 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 21:41:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:41:40,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 21:41:40,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:41:40,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:41:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:41:41,232 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:41:41,232 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:41:41,482 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:41:41,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2021-10-13 21:41:41,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 21:41:41,701 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-13 21:41:41,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 57 [2021-10-13 21:41:41,718 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 21:41:41,719 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 51 treesize of output 51 [2021-10-13 21:41:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:41:46,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:41:46,875 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 26 treesize of output 24 [2021-10-13 21:41:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:41:47,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:41:47,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964976748] [2021-10-13 21:41:47,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964976748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:41:47,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:41:47,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 21:41:47,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947352953] [2021-10-13 21:41:47,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 21:41:47,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:41:47,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 21:41:47,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 21:41:47,281 INFO L87 Difference]: Start difference. First operand 2116 states and 8599 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:42:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:42:58,115 INFO L93 Difference]: Finished difference Result 11279 states and 44368 transitions. [2021-10-13 21:42:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 21:42:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:42:58,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:42:58,168 INFO L225 Difference]: With dead ends: 11279 [2021-10-13 21:42:58,168 INFO L226 Difference]: Without dead ends: 11279 [2021-10-13 21:42:58,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 34645.0ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 21:42:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11279 states. [2021-10-13 21:42:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11279 to 2409. [2021-10-13 21:42:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2361 states have (on average 4.083862770012707) internal successors, (9642), 2408 states have internal predecessors, (9642), 0 states have call successors, (0), 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 21:42:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 9642 transitions. [2021-10-13 21:42:58,319 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 9642 transitions. Word has length 14 [2021-10-13 21:42:58,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:42:58,320 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 9642 transitions. [2021-10-13 21:42:58,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:42:58,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 9642 transitions. [2021-10-13 21:42:58,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 21:42:58,321 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:42:58,321 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:42:58,342 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 21:42:58,534 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 21:42:58,535 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:42:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:42:58,535 INFO L82 PathProgramCache]: Analyzing trace with hash -368891939, now seen corresponding path program 2 times [2021-10-13 21:42:58,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:42:58,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530914702] [2021-10-13 21:42:58,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:42:58,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:42:58,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:42:58,539 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 21:42:58,544 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 21:42:58,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:42:58,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:42:58,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 21:42:58,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:42:58,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-13 21:42:58,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 21:42:59,089 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:42:59,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-10-13 21:42:59,107 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 21:42:59,108 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 30 treesize of output 30 [2021-10-13 21:42:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:42:59,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:00,548 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 29 treesize of output 27 [2021-10-13 21:43:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:43:00,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:00,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530914702] [2021-10-13 21:43:00,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530914702] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:43:00,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:43:00,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 21:43:00,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052180608] [2021-10-13 21:43:00,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:43:00,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:43:00,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:43:00,627 INFO L87 Difference]: Start difference. First operand 2409 states and 9642 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:43:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:06,267 INFO L93 Difference]: Finished difference Result 3245 states and 13983 transitions. [2021-10-13 21:43:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 21:43:06,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:43:06,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:06,279 INFO L225 Difference]: With dead ends: 3245 [2021-10-13 21:43:06,279 INFO L226 Difference]: Without dead ends: 3245 [2021-10-13 21:43:06,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5186.6ms TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-10-13 21:43:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2021-10-13 21:43:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 2697. [2021-10-13 21:43:06,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2649 states have (on average 4.636089090222725) internal successors, (12281), 2696 states have internal predecessors, (12281), 0 states have call successors, (0), 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 21:43:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 12281 transitions. [2021-10-13 21:43:06,368 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 12281 transitions. Word has length 15 [2021-10-13 21:43:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:06,369 INFO L470 AbstractCegarLoop]: Abstraction has 2697 states and 12281 transitions. [2021-10-13 21:43:06,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:43:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 12281 transitions. [2021-10-13 21:43:06,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 21:43:06,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:06,370 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:06,385 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 21:43:06,584 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 21:43:06,584 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:43:06,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:06,585 INFO L82 PathProgramCache]: Analyzing trace with hash -368891937, now seen corresponding path program 1 times [2021-10-13 21:43:06,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:06,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058234769] [2021-10-13 21:43:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:06,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:06,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:06,588 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 21:43:06,589 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 21:43:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:07,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 21:43:07,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:07,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:43:07,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:07,543 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 27 treesize of output 23 [2021-10-13 21:43:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:43:07,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:07,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058234769] [2021-10-13 21:43:07,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058234769] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:43:07,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:43:07,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-13 21:43:07,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137941427] [2021-10-13 21:43:07,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 21:43:07,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 21:43:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:43:07,843 INFO L87 Difference]: Start difference. First operand 2697 states and 12281 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:43:11,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:43:11,083 INFO L93 Difference]: Finished difference Result 7561 states and 33989 transitions. [2021-10-13 21:43:11,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 21:43:11,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:43:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:43:11,114 INFO L225 Difference]: With dead ends: 7561 [2021-10-13 21:43:11,115 INFO L226 Difference]: Without dead ends: 7561 [2021-10-13 21:43:11,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1290.8ms TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:43:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7561 states. [2021-10-13 21:43:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7561 to 2635. [2021-10-13 21:43:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2587 states have (on average 4.632392732895245) internal successors, (11984), 2634 states have internal predecessors, (11984), 0 states have call successors, (0), 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 21:43:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 11984 transitions. [2021-10-13 21:43:11,224 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 11984 transitions. Word has length 15 [2021-10-13 21:43:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:43:11,224 INFO L470 AbstractCegarLoop]: Abstraction has 2635 states and 11984 transitions. [2021-10-13 21:43:11,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:43:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 11984 transitions. [2021-10-13 21:43:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 21:43:11,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:43:11,226 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:43:11,241 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 21:43:11,440 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 21:43:11,441 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:43:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:43:11,442 INFO L82 PathProgramCache]: Analyzing trace with hash -368891935, now seen corresponding path program 1 times [2021-10-13 21:43:11,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:43:11,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25804943] [2021-10-13 21:43:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:43:11,444 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:43:11,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:43:11,445 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 21:43:11,446 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 21:43:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:43:11,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 21:43:11,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:43:11,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:43:11,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:43:12,280 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:43:12,281 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:43:12,391 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:43:12,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:43:12,660 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:43:12,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2021-10-13 21:43:12,677 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 21:43:12,678 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 35 treesize of output 35 [2021-10-13 21:43:13,121 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-13 21:43:13,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 46 [2021-10-13 21:43:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:43:14,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:43:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:43:16,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:43:16,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25804943] [2021-10-13 21:43:16,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25804943] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:43:16,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:43:16,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-13 21:43:16,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32215839] [2021-10-13 21:43:16,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 21:43:16,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:43:16,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 21:43:16,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-13 21:43:16,266 INFO L87 Difference]: Start difference. First operand 2635 states and 11984 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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 21:44:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:03,399 INFO L93 Difference]: Finished difference Result 15409 states and 70941 transitions. [2021-10-13 21:44:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 21:44:03,402 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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 21:44:03,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:03,548 INFO L225 Difference]: With dead ends: 15409 [2021-10-13 21:44:03,548 INFO L226 Difference]: Without dead ends: 15409 [2021-10-13 21:44:03,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 21590.4ms TimeCoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 21:44:03,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15409 states. [2021-10-13 21:44:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15409 to 3092. [2021-10-13 21:44:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 3044 states have (on average 4.576872536136662) internal successors, (13932), 3091 states have internal predecessors, (13932), 0 states have call successors, (0), 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 21:44:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 13932 transitions. [2021-10-13 21:44:03,740 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 13932 transitions. Word has length 15 [2021-10-13 21:44:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:03,740 INFO L470 AbstractCegarLoop]: Abstraction has 3092 states and 13932 transitions. [2021-10-13 21:44:03,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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 21:44:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 13932 transitions. [2021-10-13 21:44:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 21:44:03,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:03,741 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:03,754 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 21:44:03,946 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 21:44:03,947 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:44:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:03,948 INFO L82 PathProgramCache]: Analyzing trace with hash -368891934, now seen corresponding path program 1 times [2021-10-13 21:44:03,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:03,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025713207] [2021-10-13 21:44:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:44:03,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:03,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:03,950 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 21:44:03,951 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 21:44:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:44:04,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 21:44:04,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:04,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 21:44:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:44:04,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:44:04,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:04,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025713207] [2021-10-13 21:44:04,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025713207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:44:04,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:44:04,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 21:44:04,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468618884] [2021-10-13 21:44:04,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 21:44:04,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 21:44:04,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 21:44:04,516 INFO L87 Difference]: Start difference. First operand 3092 states and 13932 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 21:44:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:04,884 INFO L93 Difference]: Finished difference Result 2550 states and 11065 transitions. [2021-10-13 21:44:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 21:44:04,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 15 [2021-10-13 21:44:04,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:04,896 INFO L225 Difference]: With dead ends: 2550 [2021-10-13 21:44:04,897 INFO L226 Difference]: Without dead ends: 2550 [2021-10-13 21:44:04,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 21:44:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-10-13 21:44:04,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2550. [2021-10-13 21:44:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2523 states have (on average 4.385652001585414) internal successors, (11065), 2549 states have internal predecessors, (11065), 0 states have call successors, (0), 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 21:44:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 11065 transitions. [2021-10-13 21:44:04,950 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 11065 transitions. Word has length 15 [2021-10-13 21:44:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:04,950 INFO L470 AbstractCegarLoop]: Abstraction has 2550 states and 11065 transitions. [2021-10-13 21:44:04,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 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 21:44:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 11065 transitions. [2021-10-13 21:44:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 21:44:04,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:04,951 INFO L512 BasicCegarLoop]: trace histogram [9, 3, 1, 1, 1] [2021-10-13 21:44:04,963 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 21:44:05,152 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 21:44:05,153 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:44:05,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:05,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1461194191, now seen corresponding path program 2 times [2021-10-13 21:44:05,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:05,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700048854] [2021-10-13 21:44:05,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:44:05,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:05,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:05,156 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 21:44:05,158 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 21:44:05,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:44:05,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:44:05,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 21:44:05,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:05,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-10-13 21:44:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 21:44:06,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:44:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 21:44:10,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:44:10,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700048854] [2021-10-13 21:44:10,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700048854] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:44:10,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:44:10,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 27 [2021-10-13 21:44:10,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89604971] [2021-10-13 21:44:10,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-13 21:44:10,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:44:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-13 21:44:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-10-13 21:44:10,406 INFO L87 Difference]: Start difference. First operand 2550 states and 11065 transitions. Second operand has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 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 21:44:58,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:44:58,321 INFO L93 Difference]: Finished difference Result 30154 states and 136116 transitions. [2021-10-13 21:44:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 21:44:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 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 21:44:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:44:58,619 INFO L225 Difference]: With dead ends: 30154 [2021-10-13 21:44:58,619 INFO L226 Difference]: Without dead ends: 30154 [2021-10-13 21:44:58,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 10497.1ms TimeCoverageRelationStatistics Valid=497, Invalid=2259, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 21:44:58,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30154 states. [2021-10-13 21:44:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30154 to 2577. [2021-10-13 21:44:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2550 states have (on average 4.356470588235294) internal successors, (11109), 2576 states have internal predecessors, (11109), 0 states have call successors, (0), 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 21:44:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 11109 transitions. [2021-10-13 21:44:59,045 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 11109 transitions. Word has length 15 [2021-10-13 21:44:59,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:44:59,045 INFO L470 AbstractCegarLoop]: Abstraction has 2577 states and 11109 transitions. [2021-10-13 21:44:59,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 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 21:44:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 11109 transitions. [2021-10-13 21:44:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 21:44:59,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:44:59,047 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:44:59,059 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 21:44:59,254 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 21:44:59,255 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:44:59,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:44:59,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1126677090, now seen corresponding path program 1 times [2021-10-13 21:44:59,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:44:59,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048002381] [2021-10-13 21:44:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:44:59,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:44:59,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:44:59,258 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 21:44:59,259 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 21:44:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:44:59,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:44:59,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:44:59,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:44:59,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:45:00,063 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:45:00,064 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:45:00,290 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 15 treesize of output 11 [2021-10-13 21:45:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:45:00,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:01,087 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 21:45:01,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:01,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048002381] [2021-10-13 21:45:01,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048002381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:45:01,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:45:01,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-13 21:45:01,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77861194] [2021-10-13 21:45:01,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 21:45:01,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 21:45:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-13 21:45:01,089 INFO L87 Difference]: Start difference. First operand 2577 states and 11109 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 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 21:45:05,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:05,391 INFO L93 Difference]: Finished difference Result 3607 states and 15328 transitions. [2021-10-13 21:45:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:05,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 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 21:45:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:05,450 INFO L225 Difference]: With dead ends: 3607 [2021-10-13 21:45:05,450 INFO L226 Difference]: Without dead ends: 3607 [2021-10-13 21:45:05,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1010.1ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-13 21:45:05,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2021-10-13 21:45:05,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3115. [2021-10-13 21:45:05,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3088 states have (on average 4.3549222797927465) internal successors, (13448), 3114 states have internal predecessors, (13448), 0 states have call successors, (0), 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 21:45:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 13448 transitions. [2021-10-13 21:45:05,538 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 13448 transitions. Word has length 16 [2021-10-13 21:45:05,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:05,538 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 13448 transitions. [2021-10-13 21:45:05,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 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 21:45:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 13448 transitions. [2021-10-13 21:45:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 21:45:05,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:05,540 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:05,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-13 21:45:05,740 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 21:45:05,741 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:45:05,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:05,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1449260136, now seen corresponding path program 1 times [2021-10-13 21:45:05,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:05,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446403037] [2021-10-13 21:45:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:45:05,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:05,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:05,743 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 21:45:05,744 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 21:45:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:45:06,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 21:45:06,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:06,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-13 21:45:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:45:06,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:45:07,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:07,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446403037] [2021-10-13 21:45:07,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446403037] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:45:07,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:45:07,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-13 21:45:07,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354599597] [2021-10-13 21:45:07,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 21:45:07,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:07,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 21:45:07,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:45:07,486 INFO L87 Difference]: Start difference. First operand 3115 states and 13448 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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 21:45:10,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:10,053 INFO L93 Difference]: Finished difference Result 6175 states and 25521 transitions. [2021-10-13 21:45:10,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:45:10,055 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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 16 [2021-10-13 21:45:10,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:10,076 INFO L225 Difference]: With dead ends: 6175 [2021-10-13 21:45:10,076 INFO L226 Difference]: Without dead ends: 6175 [2021-10-13 21:45:10,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1321.6ms TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2021-10-13 21:45:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2021-10-13 21:45:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 3751. [2021-10-13 21:45:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 3724 states have (on average 4.763694951664877) internal successors, (17740), 3750 states have internal predecessors, (17740), 0 states have call successors, (0), 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 21:45:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 17740 transitions. [2021-10-13 21:45:10,224 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 17740 transitions. Word has length 16 [2021-10-13 21:45:10,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:10,224 INFO L470 AbstractCegarLoop]: Abstraction has 3751 states and 17740 transitions. [2021-10-13 21:45:10,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 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 21:45:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 17740 transitions. [2021-10-13 21:45:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 21:45:10,226 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:10,226 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:45:10,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-13 21:45:10,437 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 21:45:10,438 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:45:10,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:10,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1449260138, now seen corresponding path program 1 times [2021-10-13 21:45:10,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:10,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36648032] [2021-10-13 21:45:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:45:10,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:10,440 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 21:45:10,441 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 21:45:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:45:10,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 21:45:10,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:11,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:45:11,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:45:11,375 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:45:11,375 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:45:11,533 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 13 treesize of output 9 [2021-10-13 21:45:11,824 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 21:45:11,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:12,311 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 21:45:12,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:12,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36648032] [2021-10-13 21:45:12,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36648032] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:45:12,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:45:12,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-13 21:45:12,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137548685] [2021-10-13 21:45:12,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 21:45:12,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:12,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 21:45:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-13 21:45:12,313 INFO L87 Difference]: Start difference. First operand 3751 states and 17740 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 21:45:16,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:45:16,414 INFO L93 Difference]: Finished difference Result 3355 states and 14835 transitions. [2021-10-13 21:45:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 21:45:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 16 [2021-10-13 21:45:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:45:16,428 INFO L225 Difference]: With dead ends: 3355 [2021-10-13 21:45:16,429 INFO L226 Difference]: Without dead ends: 3355 [2021-10-13 21:45:16,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1015.6ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-13 21:45:16,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3355 states. [2021-10-13 21:45:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3355 to 3115. [2021-10-13 21:45:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3115 states, 3088 states have (on average 4.587435233160622) internal successors, (14166), 3114 states have internal predecessors, (14166), 0 states have call successors, (0), 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 21:45:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3115 states to 3115 states and 14166 transitions. [2021-10-13 21:45:16,544 INFO L78 Accepts]: Start accepts. Automaton has 3115 states and 14166 transitions. Word has length 16 [2021-10-13 21:45:16,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:45:16,545 INFO L470 AbstractCegarLoop]: Abstraction has 3115 states and 14166 transitions. [2021-10-13 21:45:16,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 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 21:45:16,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3115 states and 14166 transitions. [2021-10-13 21:45:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 21:45:16,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:45:16,546 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-13 21:45:16,559 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 21:45:16,753 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 21:45:16,754 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:45:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:45:16,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1695992988, now seen corresponding path program 3 times [2021-10-13 21:45:16,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:45:16,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940952570] [2021-10-13 21:45:16,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:45:16,755 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:45:16,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:45:16,757 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 21:45:16,758 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 21:45:17,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-13 21:45:17,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:45:17,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 21:45:17,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:45:17,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:45:17,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:45:17,768 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:45:17,768 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:45:18,859 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 21:45:18,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:45:25,920 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 21:45:25,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:45:25,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940952570] [2021-10-13 21:45:25,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940952570] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:45:25,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:45:25,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-13 21:45:25,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097534114] [2021-10-13 21:45:25,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-13 21:45:25,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:45:25,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-13 21:45:25,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-13 21:45:25,923 INFO L87 Difference]: Start difference. First operand 3115 states and 14166 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 21:45:41,012 WARN L207 SmtUtils]: Spent 10.13 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-13 21:45:50,381 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-13 21:46:00,790 WARN L207 SmtUtils]: Spent 8.12 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-13 21:46:08,718 WARN L207 SmtUtils]: Spent 6.60 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-13 21:47:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:48,522 INFO L93 Difference]: Finished difference Result 34417 states and 169208 transitions. [2021-10-13 21:47:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 21:47:48,525 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 21:47:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:49,023 INFO L225 Difference]: With dead ends: 34417 [2021-10-13 21:47:49,023 INFO L226 Difference]: Without dead ends: 34417 [2021-10-13 21:47:49,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 66383.0ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 21:47:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34417 states. [2021-10-13 21:47:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34417 to 3141. [2021-10-13 21:47:49,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3114 states have (on average 4.5667951188182405) internal successors, (14221), 3140 states have internal predecessors, (14221), 0 states have call successors, (0), 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 21:47:49,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 14221 transitions. [2021-10-13 21:47:49,771 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 14221 transitions. Word has length 16 [2021-10-13 21:47:49,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:49,771 INFO L470 AbstractCegarLoop]: Abstraction has 3141 states and 14221 transitions. [2021-10-13 21:47:49,771 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 21:47:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 14221 transitions. [2021-10-13 21:47:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 21:47:49,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:49,773 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:49,785 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 21:47:49,980 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 21:47:49,981 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:47:49,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:49,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1889696906, now seen corresponding path program 1 times [2021-10-13 21:47:49,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:49,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494538413] [2021-10-13 21:47:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:47:49,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:49,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:49,985 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 21:47:49,987 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 21:47:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:47:50,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:47:50,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:47:50,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:50,860 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 27 treesize of output 23 [2021-10-13 21:47:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:47:51,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:51,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494538413] [2021-10-13 21:47:51,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494538413] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:51,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:51,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 21:47:51,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495639209] [2021-10-13 21:47:51,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 21:47:51,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 21:47:51,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:47:51,154 INFO L87 Difference]: Start difference. First operand 3141 states and 14221 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) 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 21:47:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:53,735 INFO L93 Difference]: Finished difference Result 5299 states and 23932 transitions. [2021-10-13 21:47:53,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 21:47:53,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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 19 [2021-10-13 21:47:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:53,756 INFO L225 Difference]: With dead ends: 5299 [2021-10-13 21:47:53,756 INFO L226 Difference]: Without dead ends: 5299 [2021-10-13 21:47:53,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 727.7ms TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2021-10-13 21:47:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2021-10-13 21:47:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 3507. [2021-10-13 21:47:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3480 states have (on average 4.835632183908046) internal successors, (16828), 3506 states have internal predecessors, (16828), 0 states have call successors, (0), 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 21:47:53,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 16828 transitions. [2021-10-13 21:47:53,912 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 16828 transitions. Word has length 19 [2021-10-13 21:47:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:53,912 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 16828 transitions. [2021-10-13 21:47:53,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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 21:47:53,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 16828 transitions. [2021-10-13 21:47:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 21:47:53,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:53,914 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:53,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-13 21:47:54,114 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 21:47:54,115 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:47:54,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:54,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1880921426, now seen corresponding path program 2 times [2021-10-13 21:47:54,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:54,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582317793] [2021-10-13 21:47:54,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:47:54,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:54,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:54,119 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 21:47:54,120 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 21:47:54,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:47:54,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:54,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:47:54,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:47:54,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:47:54,841 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 35 treesize of output 31 [2021-10-13 21:47:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:47:55,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:47:55,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582317793] [2021-10-13 21:47:55,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582317793] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:47:55,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:47:55,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 21:47:55,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637926970] [2021-10-13 21:47:55,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 21:47:55,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:47:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 21:47:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:47:55,261 INFO L87 Difference]: Start difference. First operand 3507 states and 16828 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) 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 21:47:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:47:58,869 INFO L93 Difference]: Finished difference Result 7289 states and 34202 transitions. [2021-10-13 21:47:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 21:47:58,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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 19 [2021-10-13 21:47:58,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:47:58,898 INFO L225 Difference]: With dead ends: 7289 [2021-10-13 21:47:58,898 INFO L226 Difference]: Without dead ends: 7289 [2021-10-13 21:47:58,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1032.6ms TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-10-13 21:47:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7289 states. [2021-10-13 21:47:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7289 to 3595. [2021-10-13 21:47:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3568 states have (on average 4.86322869955157) internal successors, (17352), 3594 states have internal predecessors, (17352), 0 states have call successors, (0), 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 21:47:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 17352 transitions. [2021-10-13 21:47:59,068 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 17352 transitions. Word has length 19 [2021-10-13 21:47:59,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:47:59,069 INFO L470 AbstractCegarLoop]: Abstraction has 3595 states and 17352 transitions. [2021-10-13 21:47:59,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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 21:47:59,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 17352 transitions. [2021-10-13 21:47:59,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 21:47:59,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:47:59,071 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:47:59,086 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 21:47:59,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:47:59,285 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:47:59,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:47:59,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2070687832, now seen corresponding path program 3 times [2021-10-13 21:47:59,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:47:59,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125764483] [2021-10-13 21:47:59,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:47:59,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:47:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:47:59,288 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:47:59,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 21:47:59,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 21:47:59,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:47:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 21:47:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:47:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:47:59,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:00,047 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 35 treesize of output 31 [2021-10-13 21:48:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:48:00,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:00,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125764483] [2021-10-13 21:48:00,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125764483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:48:00,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:48:00,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 21:48:00,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075160476] [2021-10-13 21:48:00,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 21:48:00,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 21:48:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-13 21:48:00,485 INFO L87 Difference]: Start difference. First operand 3595 states and 17352 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) 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 21:48:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:02,718 INFO L93 Difference]: Finished difference Result 6121 states and 29248 transitions. [2021-10-13 21:48:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 21:48:02,720 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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 19 [2021-10-13 21:48:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:02,746 INFO L225 Difference]: With dead ends: 6121 [2021-10-13 21:48:02,746 INFO L226 Difference]: Without dead ends: 6121 [2021-10-13 21:48:02,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 637.5ms TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-10-13 21:48:02,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6121 states. [2021-10-13 21:48:02,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6121 to 3507. [2021-10-13 21:48:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3480 states have (on average 4.835632183908046) internal successors, (16828), 3506 states have internal predecessors, (16828), 0 states have call successors, (0), 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 21:48:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 16828 transitions. [2021-10-13 21:48:02,877 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 16828 transitions. Word has length 19 [2021-10-13 21:48:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:02,878 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 16828 transitions. [2021-10-13 21:48:02,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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 21:48:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 16828 transitions. [2021-10-13 21:48:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 21:48:02,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:02,880 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:02,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:03,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:03,093 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:48:03,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:03,094 INFO L82 PathProgramCache]: Analyzing trace with hash 78841150, now seen corresponding path program 2 times [2021-10-13 21:48:03,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:03,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109366515] [2021-10-13 21:48:03,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:48:03,129 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:03,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:03,130 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:03,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 21:48:03,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:48:03,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:03,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 21:48:03,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:03,942 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:48:03,943 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:48:04,058 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:48:04,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:48:04,222 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:48:04,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-10-13 21:48:04,266 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 21:48:04,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-10-13 21:48:04,545 INFO L354 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2021-10-13 21:48:04,546 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 2 case distinctions, treesize of input 23 treesize of output 36 [2021-10-13 21:48:04,651 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-13 21:48:04,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2021-10-13 21:48:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-13 21:48:07,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-13 21:48:33,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:33,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109366515] [2021-10-13 21:48:33,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109366515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:48:33,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:48:33,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-10-13 21:48:33,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847198146] [2021-10-13 21:48:33,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 21:48:33,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 21:48:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=82, Unknown=3, NotChecked=0, Total=110 [2021-10-13 21:48:33,768 INFO L87 Difference]: Start difference. First operand 3507 states and 16828 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 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 21:48:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:48:37,248 INFO L93 Difference]: Finished difference Result 3079 states and 14300 transitions. [2021-10-13 21:48:37,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 21:48:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 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 19 [2021-10-13 21:48:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:48:37,267 INFO L225 Difference]: With dead ends: 3079 [2021-10-13 21:48:37,268 INFO L226 Difference]: Without dead ends: 3079 [2021-10-13 21:48:37,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 10480.8ms TimeCoverageRelationStatistics Valid=61, Invalid=146, Unknown=3, NotChecked=0, Total=210 [2021-10-13 21:48:37,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3079 states. [2021-10-13 21:48:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3079 to 3079. [2021-10-13 21:48:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3079 states, 3064 states have (on average 4.66710182767624) internal successors, (14300), 3078 states have internal predecessors, (14300), 0 states have call successors, (0), 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 21:48:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 14300 transitions. [2021-10-13 21:48:37,351 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 14300 transitions. Word has length 19 [2021-10-13 21:48:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:48:37,351 INFO L470 AbstractCegarLoop]: Abstraction has 3079 states and 14300 transitions. [2021-10-13 21:48:37,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 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 21:48:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 14300 transitions. [2021-10-13 21:48:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 21:48:37,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:48:37,358 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:48:37,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 21:48:37,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:48:37,573 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:48:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:48:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash 401424198, now seen corresponding path program 2 times [2021-10-13 21:48:37,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:48:37,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554778069] [2021-10-13 21:48:37,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:48:37,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:48:37,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:48:37,577 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:48:37,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 21:48:38,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:48:38,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:48:38,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 21:48:38,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:48:38,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:48:38,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:48:38,661 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:48:38,662 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:48:38,779 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:48:38,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:48:38,965 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:48:38,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 41 [2021-10-13 21:48:39,002 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 21:48:39,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 45 [2021-10-13 21:48:39,367 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-13 21:48:39,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-10-13 21:48:39,421 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 21:48:39,422 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 54 treesize of output 56 [2021-10-13 21:48:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 21:48:50,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:48:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 21:48:56,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:48:56,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554778069] [2021-10-13 21:48:56,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554778069] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:48:56,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:48:56,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-13 21:48:56,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301729730] [2021-10-13 21:48:56,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 21:48:56,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:48:56,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 21:48:56,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=117, Unknown=2, NotChecked=0, Total=156 [2021-10-13 21:48:56,801 INFO L87 Difference]: Start difference. First operand 3079 states and 14300 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 21:49:17,774 WARN L207 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-10-13 21:49:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:21,524 INFO L93 Difference]: Finished difference Result 3555 states and 15024 transitions. [2021-10-13 21:49:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 21:49:21,525 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 19 [2021-10-13 21:49:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:21,536 INFO L225 Difference]: With dead ends: 3555 [2021-10-13 21:49:21,537 INFO L226 Difference]: Without dead ends: 3555 [2021-10-13 21:49:21,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 30625.9ms TimeCoverageRelationStatistics Valid=112, Invalid=228, Unknown=2, NotChecked=0, Total=342 [2021-10-13 21:49:21,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2021-10-13 21:49:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 2589. [2021-10-13 21:49:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2589 states, 2574 states have (on average 4.517871017871018) internal successors, (11629), 2588 states have internal predecessors, (11629), 0 states have call successors, (0), 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 21:49:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 11629 transitions. [2021-10-13 21:49:21,603 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 11629 transitions. Word has length 19 [2021-10-13 21:49:21,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:21,603 INFO L470 AbstractCegarLoop]: Abstraction has 2589 states and 11629 transitions. [2021-10-13 21:49:21,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 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 21:49:21,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 11629 transitions. [2021-10-13 21:49:21,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 21:49:21,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:21,605 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:21,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:21,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:21,806 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:49:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:21,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1850880817, now seen corresponding path program 1 times [2021-10-13 21:49:21,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:21,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741570429] [2021-10-13 21:49:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:49:21,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:21,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:21,808 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:21,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 21:49:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:49:22,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 21:49:22,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:22,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:49:22,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:49:23,045 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:49:23,046 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 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-13 21:49:23,333 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 18 treesize of output 12 [2021-10-13 21:49:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 21:49:23,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 21:49:24,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:24,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741570429] [2021-10-13 21:49:24,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741570429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:49:24,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:49:24,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-13 21:49:24,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861859691] [2021-10-13 21:49:24,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-13 21:49:24,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 21:49:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-10-13 21:49:24,819 INFO L87 Difference]: Start difference. First operand 2589 states and 11629 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 21:49:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:34,065 INFO L93 Difference]: Finished difference Result 4550 states and 20384 transitions. [2021-10-13 21:49:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 21:49:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 20 [2021-10-13 21:49:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:34,081 INFO L225 Difference]: With dead ends: 4550 [2021-10-13 21:49:34,082 INFO L226 Difference]: Without dead ends: 4550 [2021-10-13 21:49:34,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2148.5ms TimeCoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 21:49:34,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-10-13 21:49:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 4056. [2021-10-13 21:49:34,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 4041 states have (on average 4.639198218262806) internal successors, (18747), 4055 states have internal predecessors, (18747), 0 states have call successors, (0), 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 21:49:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 18747 transitions. [2021-10-13 21:49:34,208 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 18747 transitions. Word has length 20 [2021-10-13 21:49:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:34,208 INFO L470 AbstractCegarLoop]: Abstraction has 4056 states and 18747 transitions. [2021-10-13 21:49:34,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 21:49:34,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 18747 transitions. [2021-10-13 21:49:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 21:49:34,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:34,211 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:34,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:34,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:34,412 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:49:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash -772470643, now seen corresponding path program 1 times [2021-10-13 21:49:34,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:34,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009918895] [2021-10-13 21:49:34,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 21:49:34,414 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:34,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:34,415 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:34,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 21:49:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 21:49:35,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 21:49:35,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:49:35,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:49:35,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:35,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009918895] [2021-10-13 21:49:35,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009918895] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:49:35,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:49:35,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 21:49:35,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876201986] [2021-10-13 21:49:35,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:49:35,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:49:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:49:35,401 INFO L87 Difference]: Start difference. First operand 4056 states and 18747 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 21:49:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:36,902 INFO L93 Difference]: Finished difference Result 6160 states and 26447 transitions. [2021-10-13 21:49:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 21:49:36,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 21 [2021-10-13 21:49:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:36,924 INFO L225 Difference]: With dead ends: 6160 [2021-10-13 21:49:36,925 INFO L226 Difference]: Without dead ends: 6160 [2021-10-13 21:49:36,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 367.2ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-13 21:49:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2021-10-13 21:49:37,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 4484. [2021-10-13 21:49:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4469 states have (on average 4.589617364063549) internal successors, (20511), 4483 states have internal predecessors, (20511), 0 states have call successors, (0), 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 21:49:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 20511 transitions. [2021-10-13 21:49:37,080 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 20511 transitions. Word has length 21 [2021-10-13 21:49:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:37,081 INFO L470 AbstractCegarLoop]: Abstraction has 4484 states and 20511 transitions. [2021-10-13 21:49:37,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 21:49:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 20511 transitions. [2021-10-13 21:49:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 21:49:37,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:37,083 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:37,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:37,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:37,297 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:49:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash -615772331, now seen corresponding path program 2 times [2021-10-13 21:49:37,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:37,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217907324] [2021-10-13 21:49:37,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:49:37,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:37,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:37,300 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:37,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 21:49:38,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 21:49:38,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:38,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 21:49:38,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:49:38,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:49:38,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:38,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217907324] [2021-10-13 21:49:38,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217907324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:49:38,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:49:38,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 21:49:38,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185879678] [2021-10-13 21:49:38,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:49:38,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:49:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:49:38,299 INFO L87 Difference]: Start difference. First operand 4484 states and 20511 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 21:49:39,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:39,607 INFO L93 Difference]: Finished difference Result 6704 states and 29011 transitions. [2021-10-13 21:49:39,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 21:49:39,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 21 [2021-10-13 21:49:39,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:39,633 INFO L225 Difference]: With dead ends: 6704 [2021-10-13 21:49:39,633 INFO L226 Difference]: Without dead ends: 6704 [2021-10-13 21:49:39,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 240.6ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-13 21:49:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2021-10-13 21:49:39,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 4546. [2021-10-13 21:49:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 4531 states have (on average 4.603398808210108) internal successors, (20858), 4545 states have internal predecessors, (20858), 0 states have call successors, (0), 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 21:49:39,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 20858 transitions. [2021-10-13 21:49:39,870 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 20858 transitions. Word has length 21 [2021-10-13 21:49:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:39,870 INFO L470 AbstractCegarLoop]: Abstraction has 4546 states and 20858 transitions. [2021-10-13 21:49:39,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 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 21:49:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 20858 transitions. [2021-10-13 21:49:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 21:49:39,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:39,872 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:39,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:40,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:40,073 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:49:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:40,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1361179605, now seen corresponding path program 3 times [2021-10-13 21:49:40,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:40,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785287008] [2021-10-13 21:49:40,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:49:40,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:40,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:40,077 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:40,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 21:49:40,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 21:49:40,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:40,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 21:49:40,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:49:40,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:41,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-13 21:49:41,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:41,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785287008] [2021-10-13 21:49:41,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785287008] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:49:41,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:49:41,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-13 21:49:41,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040537156] [2021-10-13 21:49:41,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 21:49:41,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:41,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 21:49:41,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 21:49:41,090 INFO L87 Difference]: Start difference. First operand 4546 states and 20858 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:49:42,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:49:42,749 INFO L93 Difference]: Finished difference Result 9454 states and 40711 transitions. [2021-10-13 21:49:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 21:49:42,750 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-13 21:49:42,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:49:42,785 INFO L225 Difference]: With dead ends: 9454 [2021-10-13 21:49:42,785 INFO L226 Difference]: Without dead ends: 9454 [2021-10-13 21:49:42,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 288.3ms TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-13 21:49:42,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9454 states. [2021-10-13 21:49:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9454 to 4118. [2021-10-13 21:49:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4118 states, 4103 states have (on average 4.5008530343650985) internal successors, (18467), 4117 states have internal predecessors, (18467), 0 states have call successors, (0), 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 21:49:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 18467 transitions. [2021-10-13 21:49:43,083 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 18467 transitions. Word has length 21 [2021-10-13 21:49:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:49:43,083 INFO L470 AbstractCegarLoop]: Abstraction has 4118 states and 18467 transitions. [2021-10-13 21:49:43,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 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 21:49:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 18467 transitions. [2021-10-13 21:49:43,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 21:49:43,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:49:43,103 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:49:43,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 21:49:43,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:49:43,304 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:49:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:49:43,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1647507907, now seen corresponding path program 2 times [2021-10-13 21:49:43,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:49:43,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772501589] [2021-10-13 21:49:43,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 21:49:43,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:49:43,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:49:43,308 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:49:43,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 21:49:44,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 21:49:44,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:49:44,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 21:49:44,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:49:44,359 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:49:44,360 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:49:44,475 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:49:44,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:49:44,661 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 21:49:44,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-13 21:49:44,686 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 0 case distinctions, treesize of input 16 treesize of output 18 [2021-10-13 21:49:44,990 INFO L354 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2021-10-13 21:49:44,991 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 2 case distinctions, treesize of input 23 treesize of output 28 [2021-10-13 21:49:45,057 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-10-13 21:49:45,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2021-10-13 21:49:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 21:49:45,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:49:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 21:49:59,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:49:59,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772501589] [2021-10-13 21:49:59,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772501589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 21:49:59,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 21:49:59,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 21:49:59,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597136192] [2021-10-13 21:49:59,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 21:49:59,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:49:59,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 21:49:59,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=50, Unknown=1, NotChecked=0, Total=72 [2021-10-13 21:49:59,946 INFO L87 Difference]: Start difference. First operand 4118 states and 18467 transitions. Second operand has 9 states, 8 states have (on average 3.25) 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 21:50:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 21:50:01,915 INFO L93 Difference]: Finished difference Result 3706 states and 16581 transitions. [2021-10-13 21:50:01,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 21:50:01,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) 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 22 [2021-10-13 21:50:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 21:50:01,943 INFO L225 Difference]: With dead ends: 3706 [2021-10-13 21:50:01,943 INFO L226 Difference]: Without dead ends: 3706 [2021-10-13 21:50:01,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3439.7ms TimeCoverageRelationStatistics Valid=44, Invalid=87, Unknown=1, NotChecked=0, Total=132 [2021-10-13 21:50:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3706 states. [2021-10-13 21:50:02,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3706 to 3706. [2021-10-13 21:50:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3706 states, 3695 states have (on average 4.487415426251691) internal successors, (16581), 3705 states have internal predecessors, (16581), 0 states have call successors, (0), 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 21:50:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 16581 transitions. [2021-10-13 21:50:02,266 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 16581 transitions. Word has length 22 [2021-10-13 21:50:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 21:50:02,266 INFO L470 AbstractCegarLoop]: Abstraction has 3706 states and 16581 transitions. [2021-10-13 21:50:02,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) 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 21:50:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 16581 transitions. [2021-10-13 21:50:02,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 21:50:02,269 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 21:50:02,269 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 21:50:02,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-13 21:50:02,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 21:50:02,482 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 63 more)] === [2021-10-13 21:50:02,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 21:50:02,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1647507909, now seen corresponding path program 3 times [2021-10-13 21:50:02,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 21:50:02,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987509929] [2021-10-13 21:50:02,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 21:50:02,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 21:50:02,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 21:50:02,487 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 21:50:02,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 21:50:03,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 21:50:03,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 21:50:03,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 21:50:03,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 21:50:03,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:50:03,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 21:50:04,114 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-13 21:50:04,115 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 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-13 21:50:04,236 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-13 21:50:04,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 103 [2021-10-13 21:50:04,558 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-13 21:50:04,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2021-10-13 21:50:04,597 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 21:50:04,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 50 [2021-10-13 21:50:04,965 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-13 21:50:04,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 79 [2021-10-13 21:50:05,011 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-13 21:50:05,012 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 73 treesize of output 75 [2021-10-13 21:50:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 21:50:17,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 21:50:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-10-13 21:50:27,304 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 21:50:27,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987509929] [2021-10-13 21:50:27,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987509929] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 21:50:27,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 21:50:27,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2021-10-13 21:50:27,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683389068] [2021-10-13 21:50:27,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-13 21:50:27,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 21:50:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-13 21:50:27,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=466, Unknown=2, NotChecked=0, Total=552 [2021-10-13 21:50:27,306 INFO L87 Difference]: Start difference. First operand 3706 states and 16581 transitions. Second operand has 24 states, 24 states have (on average 1.5) internal successors, (36), 23 states have internal predecessors, (36), 0 states have call successors, (0), 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 21:50:47,668 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 21:50:47,683 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 21:50:48,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-10-13 21:50:48,884 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 21:50:48,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2021-10-13 21:50:48,898 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:50:48,899 WARN L594 AbstractCegarLoop]: Verification canceled: while executing Executor. [2021-10-13 21:50:48,900 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:50:48,900 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:50:48,900 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-13 21:50:48,900 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-13 21:50:48,901 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 21:50:48,902 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 21:50:48,903 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 21:50:48,903 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 21:50:48,903 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 21:50:48,903 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 21:50:48,903 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 21:50:48,903 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 21:50:48,903 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 21:50:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 21:50:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 21:50:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 21:50:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 21:50:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 21:50:48,904 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 21:50:48,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 21:50:48,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 21:50:48,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 21:50:48,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-13 21:50:48,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr22REQUIRES_VIOLATION [2021-10-13 21:50:48,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr23REQUIRES_VIOLATION [2021-10-13 21:50:48,905 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr24REQUIRES_VIOLATION [2021-10-13 21:50:48,906 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr25REQUIRES_VIOLATION [2021-10-13 21:50:48,906 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:50:48,906 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 21:50:48,906 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 21:50:48,906 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 21:50:48,906 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 21:50:48,906 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-13 21:50:48,907 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-13 21:50:48,907 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-13 21:50:48,907 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-13 21:50:48,907 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-13 21:50:48,907 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-13 21:50:48,907 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-13 21:50:48,907 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-13 21:50:48,908 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-13 21:50:48,916 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 21:50:48,916 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 21:50:48,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:50:48 BasicIcfg [2021-10-13 21:50:48,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 21:50:48,919 INFO L168 Benchmark]: Toolchain (without parser) took 839436.60 ms. Allocated memory was 181.4 MB in the beginning and 591.4 MB in the end (delta: 410.0 MB). Free memory was 157.0 MB in the beginning and 277.3 MB in the end (delta: -120.4 MB). Peak memory consumption was 290.3 MB. Max. memory is 8.0 GB. [2021-10-13 21:50:48,919 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 181.4 MB. Free memory is still 158.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 21:50:48,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 479.18 ms. Allocated memory is still 181.4 MB. Free memory was 156.8 MB in the beginning and 142.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-13 21:50:48,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.59 ms. Allocated memory is still 181.4 MB. Free memory was 142.4 MB in the beginning and 140.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:50:48,920 INFO L168 Benchmark]: Boogie Preprocessor took 94.82 ms. Allocated memory is still 181.4 MB. Free memory was 140.1 MB in the beginning and 137.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 21:50:48,920 INFO L168 Benchmark]: RCFGBuilder took 2186.27 ms. Allocated memory is still 181.4 MB. Free memory was 137.9 MB in the beginning and 130.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-10-13 21:50:48,920 INFO L168 Benchmark]: TraceAbstraction took 836563.70 ms. Allocated memory was 181.4 MB in the beginning and 591.4 MB in the end (delta: 410.0 MB). Free memory was 129.6 MB in the beginning and 277.3 MB in the end (delta: -147.7 MB). Peak memory consumption was 262.3 MB. Max. memory is 8.0 GB. [2021-10-13 21:50:48,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 181.4 MB. Free memory is still 158.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 479.18 ms. Allocated memory is still 181.4 MB. Free memory was 156.8 MB in the beginning and 142.4 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 94.59 ms. Allocated memory is still 181.4 MB. Free memory was 142.4 MB in the beginning and 140.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 94.82 ms. Allocated memory is still 181.4 MB. Free memory was 140.1 MB in the beginning and 137.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2186.27 ms. Allocated memory is still 181.4 MB. Free memory was 137.9 MB in the beginning and 130.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 836563.70 ms. Allocated memory was 181.4 MB in the beginning and 591.4 MB in the end (delta: 410.0 MB). Free memory was 129.6 MB in the beginning and 277.3 MB in the end (delta: -147.7 MB). Peak memory consumption was 262.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 84269.5ms, 289 PlacesBefore, 86 PlacesAfterwards, 305 TransitionsBefore, 86 TransitionsAfterwards, 5962 CoEnabledTransitionPairs, 8 FixpointIterations, 204 TrivialSequentialCompositions, 88 ConcurrentSequentialCompositions, 45 TrivialYvCompositions, 13 ConcurrentYvCompositions, 16 ChoiceCompositions, 366 TotalNumberOfCompositions, 11895 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8396, positive: 8247, positive conditional: 0, positive unconditional: 8247, negative: 149, negative conditional: 0, negative unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3759, positive: 3715, positive conditional: 0, positive unconditional: 3715, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3759, positive: 3715, positive conditional: 0, positive unconditional: 3715, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7745, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7745, negative conditional: 0, negative unconditional: 7745, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8396, positive: 4532, positive conditional: 0, positive unconditional: 4532, negative: 105, negative conditional: 0, negative unconditional: 105, unknown: 3759, unknown conditional: 0, unknown unconditional: 3759] , Statistics on independence cache: Total cache size (in pairs): 360, Positive cache size: 347, Positive conditional cache size: 0, Positive unconditional cache size: 347, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 50]: 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: 53]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 96]: 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. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing Executor. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing Executor. - TimeoutResultAtElement [Line: 102]: 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: 103]: 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: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 348 locations, 67 error locations. Started 1 CEGAR loops. OverallTime: 836364.8ms, OverallIterations: 43, TraceHistogramMax: 14, EmptinessCheckTime: 103.4ms, AutomataDifference: 550763.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84576.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2154 SDtfs, 23016 SDslu, 11253 SDs, 0 SdLazy, 22741 SolverSat, 3023 SolverUnsat, 69 SolverUnknown, 0 SolverNotchecked, 330786.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1317 GetRequests, 610 SyntacticMatches, 3 SemanticMatches, 704 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2435 ImplicationChecksByTransitivity, 283504.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5480occurred in iteration=0, InterpolantAutomatonStates: 502, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7462.9ms AutomataMinimizationTime, 42 MinimizatonAttempts, 185553 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 531.9ms SsaConstructionTime, 6710.9ms SatisfiabilityAnalysisTime, 167562.2ms InterpolantComputationTime, 554 NumberOfCodeBlocks, 500 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 1022 ConstructedInterpolants, 290 QuantifiedInterpolants, 22395 SizeOfPredicates, 362 NumberOfNonLiveVariables, 5860 ConjunctsInSsa, 626 ConjunctsInUnsatCore, 86 InterpolantComputations, 34 PerfectInterpolantSequences, 537/1060 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