/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/chl-array-int-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:20:57,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:20:57,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:20:57,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:20:57,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:20:57,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:20:57,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:20:57,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:20:57,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:20:57,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:20:57,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:20:57,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:20:57,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:20:57,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:20:57,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:20:57,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:20:57,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:20:57,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 15:20:57,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 15:20:57,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 15:20:57,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 15:20:57,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 15:20:57,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 15:20:57,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 15:20:57,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 15:20:57,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:20:57,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:20:57,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:20:57,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:20:57,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:20:57,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:20:57,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:20:57,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:20:57,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:20:57,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:20:57,439 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:20:57,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:20:57,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:20:57,440 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:20:57,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:20:57,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:20:57,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:20:57,441 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:20:57,442 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:20:57,442 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:20:57,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:20:57,443 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:20:57,443 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:20:57,443 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:20:57,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:20:57,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:20:57,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:20:57,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:20:57,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:20:57,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:57,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:20:57,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:20:57,445 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:20:57,445 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:20:57,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:20:57,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:20:57,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:20:57,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:20:57,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:20:57,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:20:57,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:20:57,883 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:20:57,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2021-10-07 15:20:57,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a3346bcb/1c03581f054e41fc89fc302772791f35/FLAGb47ed4986 [2021-10-07 15:20:58,609 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:20:58,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-trans.wvr.c [2021-10-07 15:20:58,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a3346bcb/1c03581f054e41fc89fc302772791f35/FLAGb47ed4986 [2021-10-07 15:20:58,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a3346bcb/1c03581f054e41fc89fc302772791f35 [2021-10-07 15:20:58,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:20:58,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:20:59,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:59,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:20:59,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:20:59,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:59,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da457f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59, skipping insertion in model container [2021-10-07 15:20:59,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:59,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:20:59,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:20:59,254 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/chl-array-int-trans.wvr.c[2681,2694] [2021-10-07 15:20:59,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,279 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 15:20:59,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:20:59,309 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/chl-array-int-trans.wvr.c[2681,2694] [2021-10-07 15:20:59,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,321 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:20:59,355 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/chl-array-int-trans.wvr.c[2681,2694] [2021-10-07 15:20:59,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,378 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:20:59,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59 WrapperNode [2021-10-07 15:20:59,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:59,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:20:59,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:20:59,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:20:59,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:20:59,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:20:59,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:20:59,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:20:59,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:59,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:59,545 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) [2021-10-07 15:20:59,552 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 [2021-10-07 15:20:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:20:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:20:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:20:59,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:20:59,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:20:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:20:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:20:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 15:20:59,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 15:20:59,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:20:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:20:59,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:20:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:20:59,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:20:59,607 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:21:00,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:21:00,664 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-07 15:21:00,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00 BoogieIcfgContainer [2021-10-07 15:21:00,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:21:00,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:21:00,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:21:00,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:21:00,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:20:58" (1/3) ... [2021-10-07 15:21:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23284d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (2/3) ... [2021-10-07 15:21:00,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23284d0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00" (3/3) ... [2021-10-07 15:21:00,676 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2021-10-07 15:21:00,681 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:21:00,681 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2021-10-07 15:21:00,681 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:21:00,734 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,734 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,735 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,735 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,735 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,735 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,736 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,740 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,740 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,741 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,741 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,741 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,741 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,742 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,742 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,742 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,742 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,743 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,745 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,746 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,746 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,746 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,746 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,746 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,748 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,751 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,752 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,752 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,752 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,753 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,753 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,756 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,756 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,756 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,757 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,757 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,758 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,758 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,759 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,763 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,764 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,764 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,765 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,767 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,767 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,768 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,768 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,768 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,768 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,769 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,769 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,769 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,775 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,784 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,785 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,786 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,786 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,786 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,787 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,787 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,788 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,789 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,789 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,790 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,790 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,791 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,791 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,792 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,793 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,794 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,795 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,795 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,795 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,795 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,796 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,796 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,796 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,796 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,796 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,797 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,797 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,797 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,798 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,798 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,798 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,798 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,799 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,799 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,799 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,799 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,799 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,800 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,800 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,800 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,800 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,800 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,801 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,802 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,803 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,803 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,803 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,803 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,804 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,804 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,804 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,804 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,804 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,805 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,805 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,805 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,805 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,805 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,806 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,806 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,806 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,806 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,806 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,807 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,807 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,807 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,807 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,807 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,808 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,812 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,812 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,818 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,820 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,826 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,828 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,833 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,833 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,833 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,834 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,834 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,834 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,836 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,843 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 15:21:00,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:21:00,901 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 [2021-10-07 15:21:00,901 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-10-07 15:21:00,923 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:21:00,935 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 285 transitions, 594 flow [2021-10-07 15:21:00,938 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 285 transitions, 594 flow [2021-10-07 15:21:00,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 273 places, 285 transitions, 594 flow [2021-10-07 15:21:01,052 INFO L129 PetriNetUnfolder]: 22/282 cut-off events. [2021-10-07 15:21:01,053 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 15:21:01,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 282 events. 22/282 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 534 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 217. Up to 3 conditions per place. [2021-10-07 15:21:01,074 INFO L116 LiptonReduction]: Number of co-enabled transitions 9114 [2021-10-07 15:21:49,798 INFO L131 LiptonReduction]: Checked pairs total: 19044 [2021-10-07 15:21:49,799 INFO L133 LiptonReduction]: Total number of compositions: 321 [2021-10-07 15:21:49,809 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 83 transitions, 190 flow [2021-10-07 15:21:50,212 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10140 states, 7584 states have (on average 5.030458860759493) internal successors, (38151), 10139 states have internal predecessors, (38151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 10140 states, 7584 states have (on average 5.030458860759493) internal successors, (38151), 10139 states have internal predecessors, (38151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:50,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:21:50,275 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:50,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:21:50,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:21:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:50,290 INFO L82 PathProgramCache]: Analyzing trace with hash 35345, now seen corresponding path program 1 times [2021-10-07 15:21:50,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:50,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136340292] [2021-10-07 15:21:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:50,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:50,416 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) [2021-10-07 15:21:50,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:21:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:50,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:50,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:50,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:50,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:50,962 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:21:50,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-07 15:21:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:51,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:51,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:51,200 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:51,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136340292] [2021-10-07 15:21:51,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136340292] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:51,201 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:51,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:51,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097156032] [2021-10-07 15:21:51,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:51,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:51,263 INFO L87 Difference]: Start difference. First operand has 10140 states, 7584 states have (on average 5.030458860759493) internal successors, (38151), 10139 states have internal predecessors, (38151), 0 states have call successors, (0), 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 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) [2021-10-07 15:21:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:52,795 INFO L93 Difference]: Finished difference Result 13528 states and 50451 transitions. [2021-10-07 15:21:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:21:52,799 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 [2021-10-07 15:21:52,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:53,010 INFO L225 Difference]: With dead ends: 13528 [2021-10-07 15:21:53,010 INFO L226 Difference]: Without dead ends: 13528 [2021-10-07 15:21:53,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13528 states. [2021-10-07 15:21:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13528 to 6769. [2021-10-07 15:21:53,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6769 states, 5266 states have (on average 4.79377136346373) internal successors, (25244), 6768 states have internal predecessors, (25244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 25244 transitions. [2021-10-07 15:21:53,797 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 25244 transitions. Word has length 2 [2021-10-07 15:21:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:53,798 INFO L470 AbstractCegarLoop]: Abstraction has 6769 states and 25244 transitions. [2021-10-07 15:21:53,799 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) [2021-10-07 15:21:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 25244 transitions. [2021-10-07 15:21:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:21:53,799 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:53,800 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:21:53,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 15:21:54,014 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 [2021-10-07 15:21:54,014 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:21:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:54,015 INFO L82 PathProgramCache]: Analyzing trace with hash 35346, now seen corresponding path program 1 times [2021-10-07 15:21:54,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:54,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007352575] [2021-10-07 15:21:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:54,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:54,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:54,018 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) [2021-10-07 15:21:54,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:21:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:54,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:21:54,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:54,129 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:21:54,129 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 [2021-10-07 15:21:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:54,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:54,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:54,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007352575] [2021-10-07 15:21:54,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007352575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:54,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:54,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:21:54,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113958570] [2021-10-07 15:21:54,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:21:54,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:54,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:21:54,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:54,170 INFO L87 Difference]: Start difference. First operand 6769 states and 25244 transitions. 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) [2021-10-07 15:21:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:54,808 INFO L93 Difference]: Finished difference Result 6766 states and 25235 transitions. [2021-10-07 15:21:54,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:54,809 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 [2021-10-07 15:21:54,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:54,858 INFO L225 Difference]: With dead ends: 6766 [2021-10-07 15:21:54,858 INFO L226 Difference]: Without dead ends: 6766 [2021-10-07 15:21:54,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:54,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6766 states. [2021-10-07 15:21:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6766 to 6766. [2021-10-07 15:21:55,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6766 states, 5266 states have (on average 4.792062286365363) internal successors, (25235), 6765 states have internal predecessors, (25235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:55,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6766 states to 6766 states and 25235 transitions. [2021-10-07 15:21:55,506 INFO L78 Accepts]: Start accepts. Automaton has 6766 states and 25235 transitions. Word has length 2 [2021-10-07 15:21:55,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:55,506 INFO L470 AbstractCegarLoop]: Abstraction has 6766 states and 25235 transitions. [2021-10-07 15:21:55,506 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) [2021-10-07 15:21:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 6766 states and 25235 transitions. [2021-10-07 15:21:55,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:21:55,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:55,518 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-07 15:21:55,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-07 15:21:55,719 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 [2021-10-07 15:21:55,720 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:21:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:55,721 INFO L82 PathProgramCache]: Analyzing trace with hash 34228643, now seen corresponding path program 1 times [2021-10-07 15:21:55,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:55,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107721113] [2021-10-07 15:21:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:55,723 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:55,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:55,724 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) [2021-10-07 15:21:55,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:21:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:55,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:21:55,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:56,256 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 15:21:56,257 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 55 treesize of output 101 [2021-10-07 15:21:56,277 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:21:56,278 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 104 treesize of output 100 [2021-10-07 15:21:58,275 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 15:21:58,276 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 61 treesize of output 100 [2021-10-07 15:22:07,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:07,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107721113] [2021-10-07 15:22:07,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 15:22:07,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [875602330] [2021-10-07 15:22:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:07,043 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 15:22:07,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 15:22:07,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 15:22:07,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-07 15:22:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:07,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:22:07,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:07,669 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 15:22:07,670 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 51 treesize of output 97 [2021-10-07 15:22:07,685 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:22:07,686 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 100 treesize of output 96 [2021-10-07 15:22:11,850 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 15:22:11,851 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 57 treesize of output 96 [2021-10-07 15:22:26,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 15:22:26,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365690576] [2021-10-07 15:22:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:26,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:22:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:22:26,947 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:22:26,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-07 15:22:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:27,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:22:27,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:27,321 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 15:22:27,321 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 81 treesize of output 119 [2021-10-07 15:22:27,404 INFO L354 Elim1Store]: treesize reduction 108, result has 18.8 percent of original size [2021-10-07 15:22:27,405 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 8 case distinctions, treesize of input 125 treesize of output 133 [2021-10-07 15:22:27,908 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 15:22:27,909 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 102 treesize of output 113 [2021-10-07 15:22:28,027 INFO L354 Elim1Store]: treesize reduction 108, result has 31.2 percent of original size [2021-10-07 15:22:28,028 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 101 treesize of output 138 [2021-10-07 15:22:28,890 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-07 15:22:28,891 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 152 treesize of output 166 [2021-10-07 15:22:28,986 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-10-07 15:22:28,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 151 treesize of output 159 [2021-10-07 15:22:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:33,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:36,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365690576] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:36,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:36,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:22:36,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436644185] [2021-10-07 15:22:36,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:22:36,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:36,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:22:36,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=90, Unknown=8, NotChecked=0, Total=132 [2021-10-07 15:22:36,387 INFO L87 Difference]: Start difference. First operand 6766 states and 25235 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) [2021-10-07 15:22:53,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:53,837 INFO L93 Difference]: Finished difference Result 4020 states and 13861 transitions. [2021-10-07 15:22:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:22:53,840 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 [2021-10-07 15:22:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:53,864 INFO L225 Difference]: With dead ends: 4020 [2021-10-07 15:22:53,864 INFO L226 Difference]: Without dead ends: 4020 [2021-10-07 15:22:53,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 20276.3ms TimeCoverageRelationStatistics Valid=42, Invalid=106, Unknown=8, NotChecked=0, Total=156 [2021-10-07 15:22:53,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4020 states. [2021-10-07 15:22:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4020 to 4020. [2021-10-07 15:22:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4020 states, 3332 states have (on average 4.159963985594238) internal successors, (13861), 4019 states have internal predecessors, (13861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:54,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4020 states to 4020 states and 13861 transitions. [2021-10-07 15:22:54,022 INFO L78 Accepts]: Start accepts. Automaton has 4020 states and 13861 transitions. Word has length 4 [2021-10-07 15:22:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:54,025 INFO L470 AbstractCegarLoop]: Abstraction has 4020 states and 13861 transitions. [2021-10-07 15:22:54,025 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) [2021-10-07 15:22:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 4020 states and 13861 transitions. [2021-10-07 15:22:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:22:54,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:54,026 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:22:54,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-07 15:22:54,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:54,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:54,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:22:54,639 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:22:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:54,640 INFO L82 PathProgramCache]: Analyzing trace with hash 34169073, now seen corresponding path program 1 times [2021-10-07 15:22:54,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:54,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912784097] [2021-10-07 15:22:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:54,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:54,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:54,643 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) [2021-10-07 15:22:54,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:22:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:54,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:22:54,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:54,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:22:54,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:22:54,958 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:22:54,959 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 [2021-10-07 15:22:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:55,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:55,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:55,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912784097] [2021-10-07 15:22:55,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912784097] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:55,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:55,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:22:55,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077655089] [2021-10-07 15:22:55,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:22:55,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:22:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:22:55,635 INFO L87 Difference]: Start difference. First operand 4020 states and 13861 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) [2021-10-07 15:23:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:05,954 INFO L93 Difference]: Finished difference Result 20058 states and 69237 transitions. [2021-10-07 15:23:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:23:05,957 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 [2021-10-07 15:23:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:06,201 INFO L225 Difference]: With dead ends: 20058 [2021-10-07 15:23:06,201 INFO L226 Difference]: Without dead ends: 20058 [2021-10-07 15:23:06,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 859.4ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:23:06,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20058 states. [2021-10-07 15:23:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20058 to 4030. [2021-10-07 15:23:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 3342 states have (on average 4.153500897666068) internal successors, (13881), 4029 states have internal predecessors, (13881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 13881 transitions. [2021-10-07 15:23:06,752 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 13881 transitions. Word has length 4 [2021-10-07 15:23:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:06,753 INFO L470 AbstractCegarLoop]: Abstraction has 4030 states and 13881 transitions. [2021-10-07 15:23:06,753 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) [2021-10-07 15:23:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 13881 transitions. [2021-10-07 15:23:06,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:23:06,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:06,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:23:06,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:06,966 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 [2021-10-07 15:23:06,966 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:23:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:06,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1465986052, now seen corresponding path program 1 times [2021-10-07 15:23:06,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:06,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98973050] [2021-10-07 15:23:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:06,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:06,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:06,974 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) [2021-10-07 15:23:06,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:23:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:07,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:23:07,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:07,463 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 15:23:07,464 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 42 treesize of output 88 [2021-10-07 15:23:07,470 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 90 treesize of output 88 [2021-10-07 15:23:08,795 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 15:23:08,796 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 53 treesize of output 92 [2021-10-07 15:23:14,327 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 15:23:14,328 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 56 treesize of output 95 [2021-10-07 15:23:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:32,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:33,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:33,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98973050] [2021-10-07 15:23:33,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98973050] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:33,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:33,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:23:33,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849198021] [2021-10-07 15:23:33,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:23:33,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:23:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2021-10-07 15:23:33,515 INFO L87 Difference]: Start difference. First operand 4030 states and 13881 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-07 15:23:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:48,887 INFO L93 Difference]: Finished difference Result 3918 states and 13551 transitions. [2021-10-07 15:23:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:23:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:23:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:48,914 INFO L225 Difference]: With dead ends: 3918 [2021-10-07 15:23:48,914 INFO L226 Difference]: Without dead ends: 3918 [2021-10-07 15:23:48,915 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4487.0ms TimeCoverageRelationStatistics Valid=18, Invalid=23, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:23:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-10-07 15:23:49,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3918. [2021-10-07 15:23:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3918 states, 3284 states have (on average 4.126370280146163) internal successors, (13551), 3917 states have internal predecessors, (13551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3918 states to 3918 states and 13551 transitions. [2021-10-07 15:23:49,045 INFO L78 Accepts]: Start accepts. Automaton has 3918 states and 13551 transitions. Word has length 6 [2021-10-07 15:23:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:49,046 INFO L470 AbstractCegarLoop]: Abstraction has 3918 states and 13551 transitions. [2021-10-07 15:23:49,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-07 15:23:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3918 states and 13551 transitions. [2021-10-07 15:23:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:23:49,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:49,047 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:23:49,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:49,260 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 [2021-10-07 15:23:49,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:23:49,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1465986050, now seen corresponding path program 1 times [2021-10-07 15:23:49,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:49,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495269033] [2021-10-07 15:23:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:49,262 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:49,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:49,263 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) [2021-10-07 15:23:49,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:23:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:49,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:23:49,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:49,499 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:23:49,499 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 36 treesize of output 48 [2021-10-07 15:23:49,627 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 15:23:49,627 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 35 treesize of output 46 [2021-10-07 15:23:49,790 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-07 15:23:49,791 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 55 treesize of output 72 [2021-10-07 15:23:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:50,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:50,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:50,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:50,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495269033] [2021-10-07 15:23:50,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495269033] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:50,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:50,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:23:50,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026194543] [2021-10-07 15:23:50,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:23:50,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:50,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:23:50,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:23:50,089 INFO L87 Difference]: Start difference. First operand 3918 states and 13551 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-07 15:23:50,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:50,846 INFO L93 Difference]: Finished difference Result 3806 states and 13221 transitions. [2021-10-07 15:23:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:23:50,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-07 15:23:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:50,867 INFO L225 Difference]: With dead ends: 3806 [2021-10-07 15:23:50,868 INFO L226 Difference]: Without dead ends: 3806 [2021-10-07 15:23:50,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 182.3ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:23:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2021-10-07 15:23:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3806. [2021-10-07 15:23:51,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3806 states, 3226 states have (on average 4.098264104153751) internal successors, (13221), 3805 states have internal predecessors, (13221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3806 states to 3806 states and 13221 transitions. [2021-10-07 15:23:51,030 INFO L78 Accepts]: Start accepts. Automaton has 3806 states and 13221 transitions. Word has length 6 [2021-10-07 15:23:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:51,031 INFO L470 AbstractCegarLoop]: Abstraction has 3806 states and 13221 transitions. [2021-10-07 15:23:51,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-10-07 15:23:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 3806 states and 13221 transitions. [2021-10-07 15:23:51,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:23:51,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:51,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:51,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:51,233 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 [2021-10-07 15:23:51,234 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:23:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1799069329, now seen corresponding path program 1 times [2021-10-07 15:23:51,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:51,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473331216] [2021-10-07 15:23:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:51,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:51,237 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) [2021-10-07 15:23:51,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:23:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:51,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:23:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:51,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:51,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:51,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473331216] [2021-10-07 15:23:51,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473331216] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:51,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:51,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:23:51,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513317710] [2021-10-07 15:23:51,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:23:51,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:51,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:23:51,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:51,542 INFO L87 Difference]: Start difference. First operand 3806 states and 13221 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) [2021-10-07 15:23:52,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:52,193 INFO L93 Difference]: Finished difference Result 4809 states and 16282 transitions. [2021-10-07 15:23:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:23:52,195 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 [2021-10-07 15:23:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:52,214 INFO L225 Difference]: With dead ends: 4809 [2021-10-07 15:23:52,214 INFO L226 Difference]: Without dead ends: 4809 [2021-10-07 15:23:52,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4809 states. [2021-10-07 15:23:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4809 to 4327. [2021-10-07 15:23:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4327 states, 3747 states have (on average 4.00320256204964) internal successors, (15000), 4326 states have internal predecessors, (15000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4327 states to 4327 states and 15000 transitions. [2021-10-07 15:23:52,360 INFO L78 Accepts]: Start accepts. Automaton has 4327 states and 15000 transitions. Word has length 7 [2021-10-07 15:23:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:52,360 INFO L470 AbstractCegarLoop]: Abstraction has 4327 states and 15000 transitions. [2021-10-07 15:23:52,361 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) [2021-10-07 15:23:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4327 states and 15000 transitions. [2021-10-07 15:23:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:23:52,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:52,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:52,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-10-07 15:23:52,575 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 [2021-10-07 15:23:52,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:23:52,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:52,576 INFO L82 PathProgramCache]: Analyzing trace with hash -63297541, now seen corresponding path program 1 times [2021-10-07 15:23:52,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:52,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196740100] [2021-10-07 15:23:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:52,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:52,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:52,579 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) [2021-10-07 15:23:52,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:23:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:52,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:23:52,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:52,913 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:23:52,913 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 3 case distinctions, treesize of input 40 treesize of output 52 [2021-10-07 15:23:53,115 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-07 15:23:53,116 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 57 treesize of output 80 [2021-10-07 15:23:53,848 INFO L354 Elim1Store]: treesize reduction 135, result has 23.3 percent of original size [2021-10-07 15:23:53,849 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 93 treesize of output 122 [2021-10-07 15:24:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:10,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:10,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:10,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196740100] [2021-10-07 15:24:10,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196740100] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:24:10,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:24:10,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-10-07 15:24:10,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644082691] [2021-10-07 15:24:10,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:24:10,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:24:10,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:24:10,979 INFO L87 Difference]: Start difference. First operand 4327 states and 15000 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-07 15:24:11,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:11,598 INFO L93 Difference]: Finished difference Result 4096 states and 14284 transitions. [2021-10-07 15:24:11,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:24:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 [2021-10-07 15:24:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:11,615 INFO L225 Difference]: With dead ends: 4096 [2021-10-07 15:24:11,615 INFO L226 Difference]: Without dead ends: 4096 [2021-10-07 15:24:11,616 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 16420.8ms TimeCoverageRelationStatistics Valid=21, Invalid=20, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:24:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2021-10-07 15:24:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 4096. [2021-10-07 15:24:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 3602 states have (on average 3.965574680732926) internal successors, (14284), 4095 states have internal predecessors, (14284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 14284 transitions. [2021-10-07 15:24:11,761 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 14284 transitions. Word has length 8 [2021-10-07 15:24:11,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:11,762 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 14284 transitions. [2021-10-07 15:24:11,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-07 15:24:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 14284 transitions. [2021-10-07 15:24:11,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:24:11,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:11,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:11,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:11,971 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 [2021-10-07 15:24:11,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:24:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash -63297540, now seen corresponding path program 1 times [2021-10-07 15:24:11,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:11,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035071072] [2021-10-07 15:24:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:11,975 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:11,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:11,976 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) [2021-10-07 15:24:11,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:24:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:12,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:24:12,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:12,386 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 15:24:12,387 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 42 treesize of output 80 [2021-10-07 15:24:12,393 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 [2021-10-07 15:24:12,711 INFO L354 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2021-10-07 15:24:12,712 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 46 treesize of output 69 [2021-10-07 15:24:15,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:15,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035071072] [2021-10-07 15:24:15,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 15:24:15,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [454311596] [2021-10-07 15:24:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:15,181 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-07 15:24:15,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-07 15:24:15,183 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-07 15:24:15,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-07 15:24:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:15,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:24:15,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:15,772 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 15:24:15,772 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 27 treesize of output 73 [2021-10-07 15:24:15,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-07 15:24:15,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847621955] [2021-10-07 15:24:15,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:15,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-07 15:24:15,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:24:15,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-07 15:24:15,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-07 15:24:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:16,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:16,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:16,338 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 15:24:16,339 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 57 treesize of output 95 [2021-10-07 15:24:16,413 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:24:16,414 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 3 case distinctions, treesize of input 98 treesize of output 110 [2021-10-07 15:24:16,779 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 15:24:16,780 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 90 treesize of output 101 [2021-10-07 15:24:16,886 INFO L354 Elim1Store]: treesize reduction 108, result has 31.2 percent of original size [2021-10-07 15:24:16,886 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 89 treesize of output 126 [2021-10-07 15:24:17,473 INFO L354 Elim1Store]: treesize reduction 160, result has 14.0 percent of original size [2021-10-07 15:24:17,474 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 139 treesize of output 153 [2021-10-07 15:24:17,558 INFO L354 Elim1Store]: treesize reduction 100, result has 17.4 percent of original size [2021-10-07 15:24:17,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 138 treesize of output 146 [2021-10-07 15:24:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:30,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:32,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847621955] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:24:32,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:24:32,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:24:32,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791063260] [2021-10-07 15:24:32,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:24:32,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:24:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=56, Unknown=5, NotChecked=0, Total=90 [2021-10-07 15:24:32,791 INFO L87 Difference]: Start difference. First operand 4096 states and 14284 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-07 15:24:49,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:49,021 INFO L93 Difference]: Finished difference Result 3865 states and 13568 transitions. [2021-10-07 15:24:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:24:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 [2021-10-07 15:24:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:49,040 INFO L225 Difference]: With dead ends: 3865 [2021-10-07 15:24:49,041 INFO L226 Difference]: Without dead ends: 3865 [2021-10-07 15:24:49,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 14745.6ms TimeCoverageRelationStatistics Valid=37, Invalid=68, Unknown=5, NotChecked=0, Total=110 [2021-10-07 15:24:49,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2021-10-07 15:24:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3865. [2021-10-07 15:24:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3865 states, 3457 states have (on average 3.924790280590107) internal successors, (13568), 3864 states have internal predecessors, (13568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3865 states to 3865 states and 13568 transitions. [2021-10-07 15:24:49,167 INFO L78 Accepts]: Start accepts. Automaton has 3865 states and 13568 transitions. Word has length 8 [2021-10-07 15:24:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:49,167 INFO L470 AbstractCegarLoop]: Abstraction has 3865 states and 13568 transitions. [2021-10-07 15:24:49,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-07 15:24:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3865 states and 13568 transitions. [2021-10-07 15:24:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:24:49,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:49,170 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2021-10-07 15:24:49,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:49,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-10-07 15:24:49,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:49,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-07 15:24:49,786 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:24:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1539445870, now seen corresponding path program 1 times [2021-10-07 15:24:49,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:49,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198446278] [2021-10-07 15:24:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:49,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:49,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:49,792 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) [2021-10-07 15:24:49,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:24:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:49,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:24:49,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:49,969 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 [2021-10-07 15:24:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:50,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:51,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:51,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198446278] [2021-10-07 15:24:51,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198446278] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:51,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:51,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:24:51,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063432776] [2021-10-07 15:24:51,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:24:51,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:51,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:24:51,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:24:51,670 INFO L87 Difference]: Start difference. First operand 3865 states and 13568 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:25,235 INFO L93 Difference]: Finished difference Result 34532 states and 121622 transitions. [2021-10-07 15:25:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 15:25:25,237 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2021-10-07 15:25:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:25,449 INFO L225 Difference]: With dead ends: 34532 [2021-10-07 15:25:25,449 INFO L226 Difference]: Without dead ends: 34532 [2021-10-07 15:25:25,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4694.0ms TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:25:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34532 states. [2021-10-07 15:25:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34532 to 3892. [2021-10-07 15:25:26,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3892 states, 3484 states have (on average 3.909873708381171) internal successors, (13622), 3891 states have internal predecessors, (13622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 13622 transitions. [2021-10-07 15:25:26,681 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 13622 transitions. Word has length 8 [2021-10-07 15:25:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:26,684 INFO L470 AbstractCegarLoop]: Abstraction has 3892 states and 13622 transitions. [2021-10-07 15:25:26,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 13622 transitions. [2021-10-07 15:25:26,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:25:26,688 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:26,688 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:26,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:26,900 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 [2021-10-07 15:25:26,901 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:25:26,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:26,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1599212998, now seen corresponding path program 1 times [2021-10-07 15:25:26,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:26,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523444084] [2021-10-07 15:25:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:25:26,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:26,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:26,904 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) [2021-10-07 15:25:26,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:25:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:27,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:25:27,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:25:27,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:25:27,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:27,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523444084] [2021-10-07 15:25:27,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523444084] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:25:27,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:25:27,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:25:27,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099042361] [2021-10-07 15:25:27,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:25:27,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:27,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:25:27,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:25:27,272 INFO L87 Difference]: Start difference. First operand 3892 states and 13622 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-07 15:25:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:27,866 INFO L93 Difference]: Finished difference Result 5259 states and 18026 transitions. [2021-10-07 15:25:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:25:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 8 [2021-10-07 15:25:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:27,888 INFO L225 Difference]: With dead ends: 5259 [2021-10-07 15:25:27,888 INFO L226 Difference]: Without dead ends: 5259 [2021-10-07 15:25:27,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:25:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2021-10-07 15:25:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 3892. [2021-10-07 15:25:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3892 states, 3484 states have (on average 3.909873708381171) internal successors, (13622), 3891 states have internal predecessors, (13622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3892 states to 3892 states and 13622 transitions. [2021-10-07 15:25:28,016 INFO L78 Accepts]: Start accepts. Automaton has 3892 states and 13622 transitions. Word has length 8 [2021-10-07 15:25:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:28,017 INFO L470 AbstractCegarLoop]: Abstraction has 3892 states and 13622 transitions. [2021-10-07 15:25:28,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) [2021-10-07 15:25:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3892 states and 13622 transitions. [2021-10-07 15:25:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:25:28,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:28,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:28,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:28,230 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 [2021-10-07 15:25:28,230 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:25:28,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:28,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1962226329, now seen corresponding path program 1 times [2021-10-07 15:25:28,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:28,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243184262] [2021-10-07 15:25:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:25:28,234 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:28,235 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) [2021-10-07 15:25:28,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:25:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:28,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:25:28,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:28,508 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 [2021-10-07 15:25:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:28,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:28,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:28,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243184262] [2021-10-07 15:25:28,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243184262] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:25:28,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:25:28,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 15:25:28,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485398804] [2021-10-07 15:25:28,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:25:28,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:28,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:25:28,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:25:28,572 INFO L87 Difference]: Start difference. First operand 3892 states and 13622 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-10-07 15:25:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:28,996 INFO L93 Difference]: Finished difference Result 2942 states and 10268 transitions. [2021-10-07 15:25:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:25:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 9 [2021-10-07 15:25:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:29,008 INFO L225 Difference]: With dead ends: 2942 [2021-10-07 15:25:29,008 INFO L226 Difference]: Without dead ends: 2942 [2021-10-07 15:25:29,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:25:29,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-10-07 15:25:29,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2942. [2021-10-07 15:25:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2687 states have (on average 3.8213621138816523) internal successors, (10268), 2941 states have internal predecessors, (10268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 10268 transitions. [2021-10-07 15:25:29,154 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 10268 transitions. Word has length 9 [2021-10-07 15:25:29,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:29,154 INFO L470 AbstractCegarLoop]: Abstraction has 2942 states and 10268 transitions. [2021-10-07 15:25:29,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-10-07 15:25:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 10268 transitions. [2021-10-07 15:25:29,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:25:29,155 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:29,155 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:29,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:29,356 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 [2021-10-07 15:25:29,356 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:25:29,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:29,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1962226419, now seen corresponding path program 1 times [2021-10-07 15:25:29,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:29,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088708480] [2021-10-07 15:25:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:25:29,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:29,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:29,360 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) [2021-10-07 15:25:29,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:25:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:29,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:25:29,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:29,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:29,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:29,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088708480] [2021-10-07 15:25:29,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088708480] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:25:29,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:25:29,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:25:29,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028843763] [2021-10-07 15:25:29,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:25:29,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:29,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:25:29,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:25:29,693 INFO L87 Difference]: Start difference. First operand 2942 states and 10268 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:30,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:30,113 INFO L93 Difference]: Finished difference Result 3137 states and 10772 transitions. [2021-10-07 15:25:30,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:25:30,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-07 15:25:30,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:30,123 INFO L225 Difference]: With dead ends: 3137 [2021-10-07 15:25:30,123 INFO L226 Difference]: Without dead ends: 3137 [2021-10-07 15:25:30,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:25:30,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3137 states. [2021-10-07 15:25:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3137 to 3068. [2021-10-07 15:25:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 2813 states have (on average 3.780305723426946) internal successors, (10634), 3067 states have internal predecessors, (10634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10634 transitions. [2021-10-07 15:25:30,336 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10634 transitions. Word has length 9 [2021-10-07 15:25:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:30,336 INFO L470 AbstractCegarLoop]: Abstraction has 3068 states and 10634 transitions. [2021-10-07 15:25:30,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10634 transitions. [2021-10-07 15:25:30,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:25:30,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:30,339 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:30,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:30,579 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 [2021-10-07 15:25:30,580 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:25:30,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash 535598117, now seen corresponding path program 1 times [2021-10-07 15:25:30,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:30,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380839546] [2021-10-07 15:25:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:25:30,583 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:30,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:30,585 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) [2021-10-07 15:25:30,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:25:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:30,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:25:30,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:30,866 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 [2021-10-07 15:25:30,904 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 15:25:30,904 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 [2021-10-07 15:25:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:25:31,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:25:34,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:34,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380839546] [2021-10-07 15:25:34,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380839546] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:25:34,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:25:34,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2021-10-07 15:25:34,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968653315] [2021-10-07 15:25:34,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:25:34,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:34,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:25:34,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:25:34,768 INFO L87 Difference]: Start difference. First operand 3068 states and 10634 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-10-07 15:25:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:35,105 INFO L93 Difference]: Finished difference Result 2312 states and 8002 transitions. [2021-10-07 15:25:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:25:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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 9 [2021-10-07 15:25:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:35,113 INFO L225 Difference]: With dead ends: 2312 [2021-10-07 15:25:35,113 INFO L226 Difference]: Without dead ends: 2312 [2021-10-07 15:25:35,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 3729.6ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:25:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-10-07 15:25:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2312. [2021-10-07 15:25:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2169 states have (on average 3.6892577224527434) internal successors, (8002), 2311 states have internal predecessors, (8002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 8002 transitions. [2021-10-07 15:25:35,170 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 8002 transitions. Word has length 9 [2021-10-07 15:25:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:35,170 INFO L470 AbstractCegarLoop]: Abstraction has 2312 states and 8002 transitions. [2021-10-07 15:25:35,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-10-07 15:25:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 8002 transitions. [2021-10-07 15:25:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:25:35,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:35,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:35,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:35,384 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 [2021-10-07 15:25:35,384 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:25:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash 535598118, now seen corresponding path program 1 times [2021-10-07 15:25:35,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:35,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558241474] [2021-10-07 15:25:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:25:35,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:35,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:35,388 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) [2021-10-07 15:25:35,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:25:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:35,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:25:35,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:35,689 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 [2021-10-07 15:25:35,697 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 [2021-10-07 15:25:35,800 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-07 15:25:35,800 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 26 treesize of output 32 [2021-10-07 15:25:35,843 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:25:35,843 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 16 treesize of output 16 [2021-10-07 15:25:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:25:38,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:25:38,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:38,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558241474] [2021-10-07 15:25:38,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558241474] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:38,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:38,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-10-07 15:25:38,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111701368] [2021-10-07 15:25:38,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:25:38,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:38,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:25:38,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:25:38,595 INFO L87 Difference]: Start difference. First operand 2312 states and 8002 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 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) [2021-10-07 15:26:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:00,706 INFO L93 Difference]: Finished difference Result 35595 states and 125177 transitions. [2021-10-07 15:26:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:26:00,708 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 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 9 [2021-10-07 15:26:00,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:00,972 INFO L225 Difference]: With dead ends: 35595 [2021-10-07 15:26:00,972 INFO L226 Difference]: Without dead ends: 35595 [2021-10-07 15:26:00,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 14956.9ms TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2021-10-07 15:26:01,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35595 states. [2021-10-07 15:26:01,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35595 to 2466. [2021-10-07 15:26:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2343 states have (on average 3.8198890311566367) internal successors, (8950), 2465 states have internal predecessors, (8950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 8950 transitions. [2021-10-07 15:26:01,600 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 8950 transitions. Word has length 9 [2021-10-07 15:26:01,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:01,600 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 8950 transitions. [2021-10-07 15:26:01,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 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) [2021-10-07 15:26:01,601 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 8950 transitions. [2021-10-07 15:26:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:26:01,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:01,610 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:01,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:26:01,810 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 [2021-10-07 15:26:01,810 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:26:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:01,811 INFO L82 PathProgramCache]: Analyzing trace with hash 535597991, now seen corresponding path program 1 times [2021-10-07 15:26:01,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:01,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173684626] [2021-10-07 15:26:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:26:01,812 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:01,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:01,813 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) [2021-10-07 15:26:01,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:26:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:26:02,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:26:02,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:02,271 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:26:02,271 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 [2021-10-07 15:26:02,328 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 15:26:02,328 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 25 treesize of output 32 [2021-10-07 15:26:02,433 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 15:26:02,434 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 42 treesize of output 53 [2021-10-07 15:26:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:26:02,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:26:06,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:06,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173684626] [2021-10-07 15:26:06,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173684626] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:26:06,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:26:06,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-10-07 15:26:06,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958413692] [2021-10-07 15:26:06,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:26:06,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:26:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:26:06,266 INFO L87 Difference]: Start difference. First operand 2466 states and 8950 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-10-07 15:26:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:06,615 INFO L93 Difference]: Finished difference Result 1884 states and 6700 transitions. [2021-10-07 15:26:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:26:06,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 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 [2021-10-07 15:26:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:06,622 INFO L225 Difference]: With dead ends: 1884 [2021-10-07 15:26:06,622 INFO L226 Difference]: Without dead ends: 1884 [2021-10-07 15:26:06,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3644.2ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:26:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2021-10-07 15:26:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1884. [2021-10-07 15:26:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1821 states have (on average 3.6792970895112576) internal successors, (6700), 1883 states have internal predecessors, (6700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 6700 transitions. [2021-10-07 15:26:06,662 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 6700 transitions. Word has length 9 [2021-10-07 15:26:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:06,662 INFO L470 AbstractCegarLoop]: Abstraction has 1884 states and 6700 transitions. [2021-10-07 15:26:06,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2021-10-07 15:26:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 6700 transitions. [2021-10-07 15:26:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:26:06,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:06,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:06,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:26:06,864 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 [2021-10-07 15:26:06,864 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:26:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash 535597992, now seen corresponding path program 1 times [2021-10-07 15:26:06,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:06,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125813302] [2021-10-07 15:26:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:26:06,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:06,868 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) [2021-10-07 15:26:06,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:26:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:26:07,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:26:07,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:07,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:26:07,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:26:07,442 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:26:07,443 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 [2021-10-07 15:26:07,519 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:26:07,519 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 89 treesize of output 103 [2021-10-07 15:26:07,670 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:26:07,671 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 50 treesize of output 52 [2021-10-07 15:26:07,696 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 15:26:07,696 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 49 treesize of output 56 [2021-10-07 15:26:07,884 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-07 15:26:07,885 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 68 treesize of output 73 [2021-10-07 15:26:07,920 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-07 15:26:07,920 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 67 treesize of output 69 [2021-10-07 15:26:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:26:17,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:26:20,146 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:20,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125813302] [2021-10-07 15:26:20,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125813302] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:26:20,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:26:20,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2021-10-07 15:26:20,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717891497] [2021-10-07 15:26:20,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:26:20,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:20,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:26:20,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2021-10-07 15:26:20,148 INFO L87 Difference]: Start difference. First operand 1884 states and 6700 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2021-10-07 15:26:27,976 WARN L207 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-10-07 15:27:04,419 WARN L207 SmtUtils]: Spent 8.48 s on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2021-10-07 15:27:22,191 WARN L207 SmtUtils]: Spent 10.08 s on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-10-07 15:27:41,126 WARN L207 SmtUtils]: Spent 11.46 s on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-10-07 15:28:04,836 WARN L207 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2021-10-07 15:28:14,796 WARN L207 SmtUtils]: Spent 6.21 s on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-10-07 15:28:30,345 WARN L207 SmtUtils]: Spent 5.73 s on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-10-07 15:28:42,478 WARN L207 SmtUtils]: Spent 6.93 s on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2021-10-07 15:29:01,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:01,409 INFO L93 Difference]: Finished difference Result 25220 states and 88648 transitions. [2021-10-07 15:29:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 15:29:01,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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 [2021-10-07 15:29:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:01,516 INFO L225 Difference]: With dead ends: 25220 [2021-10-07 15:29:01,516 INFO L226 Difference]: Without dead ends: 25220 [2021-10-07 15:29:01,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 130039.3ms TimeCoverageRelationStatistics Valid=571, Invalid=1868, Unknown=11, NotChecked=0, Total=2450 [2021-10-07 15:29:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25220 states. [2021-10-07 15:29:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25220 to 2287. [2021-10-07 15:29:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2239 states have (on average 3.7601607860652075) internal successors, (8419), 2286 states have internal predecessors, (8419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 8419 transitions. [2021-10-07 15:29:01,821 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 8419 transitions. Word has length 9 [2021-10-07 15:29:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:01,821 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 8419 transitions. [2021-10-07 15:29:01,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2021-10-07 15:29:01,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 8419 transitions. [2021-10-07 15:29:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:29:01,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:01,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:01,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:02,023 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 [2021-10-07 15:29:02,023 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:29:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:02,024 INFO L82 PathProgramCache]: Analyzing trace with hash 872353259, now seen corresponding path program 1 times [2021-10-07 15:29:02,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:02,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849607016] [2021-10-07 15:29:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:29:02,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:02,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:02,027 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) [2021-10-07 15:29:02,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:29:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:29:02,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:29:02,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:02,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:02,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:02,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849607016] [2021-10-07 15:29:02,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849607016] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:29:02,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:29:02,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:29:02,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148497982] [2021-10-07 15:29:02,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:29:02,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:02,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:29:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:29:02,445 INFO L87 Difference]: Start difference. First operand 2287 states and 8419 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:03,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:03,128 INFO L93 Difference]: Finished difference Result 3041 states and 10887 transitions. [2021-10-07 15:29:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:29:03,129 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:29:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:03,138 INFO L225 Difference]: With dead ends: 3041 [2021-10-07 15:29:03,138 INFO L226 Difference]: Without dead ends: 3041 [2021-10-07 15:29:03,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:29:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2021-10-07 15:29:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2629. [2021-10-07 15:29:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2629 states, 2581 states have (on average 3.767144517628826) internal successors, (9723), 2628 states have internal predecessors, (9723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 9723 transitions. [2021-10-07 15:29:03,210 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 9723 transitions. Word has length 10 [2021-10-07 15:29:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:03,210 INFO L470 AbstractCegarLoop]: Abstraction has 2629 states and 9723 transitions. [2021-10-07 15:29:03,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 9723 transitions. [2021-10-07 15:29:03,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:29:03,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:03,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:03,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:03,424 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 [2021-10-07 15:29:03,425 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:29:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash -205675464, now seen corresponding path program 1 times [2021-10-07 15:29:03,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:03,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717463746] [2021-10-07 15:29:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:29:03,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:03,429 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) [2021-10-07 15:29:03,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:29:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:29:03,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:29:03,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:03,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:03,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:03,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717463746] [2021-10-07 15:29:03,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717463746] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:29:03,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:29:03,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:29:03,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13008149] [2021-10-07 15:29:03,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:29:03,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:29:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:29:03,862 INFO L87 Difference]: Start difference. First operand 2629 states and 9723 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2021-10-07 15:29:04,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:04,166 INFO L93 Difference]: Finished difference Result 2803 states and 10011 transitions. [2021-10-07 15:29:04,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:29:04,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 [2021-10-07 15:29:04,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:04,177 INFO L225 Difference]: With dead ends: 2803 [2021-10-07 15:29:04,177 INFO L226 Difference]: Without dead ends: 2803 [2021-10-07 15:29:04,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 70.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:29:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2021-10-07 15:29:04,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2737. [2021-10-07 15:29:04,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2737 states, 2689 states have (on average 3.679062848642618) internal successors, (9893), 2736 states have internal predecessors, (9893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2737 states to 2737 states and 9893 transitions. [2021-10-07 15:29:04,319 INFO L78 Accepts]: Start accepts. Automaton has 2737 states and 9893 transitions. Word has length 11 [2021-10-07 15:29:04,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:04,319 INFO L470 AbstractCegarLoop]: Abstraction has 2737 states and 9893 transitions. [2021-10-07 15:29:04,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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) [2021-10-07 15:29:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2737 states and 9893 transitions. [2021-10-07 15:29:04,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:29:04,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:04,320 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:04,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:04,521 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 [2021-10-07 15:29:04,521 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:29:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:04,522 INFO L82 PathProgramCache]: Analyzing trace with hash -526118385, now seen corresponding path program 1 times [2021-10-07 15:29:04,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:04,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28069488] [2021-10-07 15:29:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:29:04,524 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:04,525 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) [2021-10-07 15:29:04,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:29:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:29:04,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:29:04,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:04,859 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 [2021-10-07 15:29:04,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-07 15:29:04,971 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:29:04,971 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 1 case distinctions, treesize of input 41 treesize of output 43 [2021-10-07 15:29:04,984 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:29:04,984 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 40 treesize of output 40 [2021-10-07 15:29:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:05,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:05,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:05,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28069488] [2021-10-07 15:29:05,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28069488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:05,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:05,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:29:05,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509610853] [2021-10-07 15:29:05,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:29:05,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:05,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:29:05,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:29:05,762 INFO L87 Difference]: Start difference. First operand 2737 states and 9893 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:29,902 INFO L93 Difference]: Finished difference Result 21767 states and 77187 transitions. [2021-10-07 15:29:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:29:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2021-10-07 15:29:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:29,986 INFO L225 Difference]: With dead ends: 21767 [2021-10-07 15:29:29,986 INFO L226 Difference]: Without dead ends: 21767 [2021-10-07 15:29:29,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 19027.0ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:29:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21767 states. [2021-10-07 15:29:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21767 to 2853. [2021-10-07 15:29:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2814 states have (on average 3.7494669509594885) internal successors, (10551), 2852 states have internal predecessors, (10551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 10551 transitions. [2021-10-07 15:29:30,336 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 10551 transitions. Word has length 11 [2021-10-07 15:29:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:30,336 INFO L470 AbstractCegarLoop]: Abstraction has 2853 states and 10551 transitions. [2021-10-07 15:29:30,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 10551 transitions. [2021-10-07 15:29:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:29:30,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:30,338 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:30,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:30,551 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 [2021-10-07 15:29:30,552 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:29:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:30,553 INFO L82 PathProgramCache]: Analyzing trace with hash -526118297, now seen corresponding path program 1 times [2021-10-07 15:29:30,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:30,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934048944] [2021-10-07 15:29:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:29:30,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:30,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:30,556 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) [2021-10-07 15:29:30,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:29:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:29:30,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:29:30,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:30,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:31,189 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 25 treesize of output 21 [2021-10-07 15:29:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:31,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:31,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934048944] [2021-10-07 15:29:31,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934048944] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:31,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:31,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:29:31,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661159541] [2021-10-07 15:29:31,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:29:31,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:31,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:29:31,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:29:31,275 INFO L87 Difference]: Start difference. First operand 2853 states and 10551 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:33,729 INFO L93 Difference]: Finished difference Result 7933 states and 28489 transitions. [2021-10-07 15:29:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:29:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 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 [2021-10-07 15:29:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:33,752 INFO L225 Difference]: With dead ends: 7933 [2021-10-07 15:29:33,753 INFO L226 Difference]: Without dead ends: 7933 [2021-10-07 15:29:33,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 711.3ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:29:33,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7933 states. [2021-10-07 15:29:33,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7933 to 2805. [2021-10-07 15:29:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2775 states have (on average 3.781981981981982) internal successors, (10495), 2804 states have internal predecessors, (10495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 10495 transitions. [2021-10-07 15:29:33,910 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 10495 transitions. Word has length 11 [2021-10-07 15:29:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:33,910 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 10495 transitions. [2021-10-07 15:29:33,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 10495 transitions. [2021-10-07 15:29:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:29:33,911 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:33,911 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:29:33,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:29:34,120 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 [2021-10-07 15:29:34,121 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:29:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:34,122 INFO L82 PathProgramCache]: Analyzing trace with hash -686373430, now seen corresponding path program 1 times [2021-10-07 15:29:34,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:34,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459771061] [2021-10-07 15:29:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:29:34,123 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:34,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:34,124 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) [2021-10-07 15:29:34,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:29:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:29:34,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:29:34,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:34,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:29:34,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:34,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459771061] [2021-10-07 15:29:34,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459771061] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:34,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:34,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:29:34,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882172469] [2021-10-07 15:29:34,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:29:34,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:29:34,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:29:34,750 INFO L87 Difference]: Start difference. First operand 2805 states and 10495 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2021-10-07 15:29:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:29:35,954 INFO L93 Difference]: Finished difference Result 4940 states and 17986 transitions. [2021-10-07 15:29:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:29:35,956 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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 [2021-10-07 15:29:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:29:35,969 INFO L225 Difference]: With dead ends: 4940 [2021-10-07 15:29:35,970 INFO L226 Difference]: Without dead ends: 4940 [2021-10-07 15:29:35,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 204.1ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:29:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2021-10-07 15:29:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 3654. [2021-10-07 15:29:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 3624 states have (on average 3.8932119205298013) internal successors, (14109), 3653 states have internal predecessors, (14109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:29:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 14109 transitions. [2021-10-07 15:29:36,087 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 14109 transitions. Word has length 11 [2021-10-07 15:29:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:29:36,087 INFO L470 AbstractCegarLoop]: Abstraction has 3654 states and 14109 transitions. [2021-10-07 15:29:36,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 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) [2021-10-07 15:29:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 14109 transitions. [2021-10-07 15:29:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:29:36,089 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:29:36,089 INFO L512 BasicCegarLoop]: trace histogram [9, 1, 1] [2021-10-07 15:29:36,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-07 15:29:36,296 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 [2021-10-07 15:29:36,298 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:29:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:29:36,299 INFO L82 PathProgramCache]: Analyzing trace with hash -174836408, now seen corresponding path program 2 times [2021-10-07 15:29:36,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:29:36,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672400982] [2021-10-07 15:29:36,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:29:36,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:29:36,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:29:36,303 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) [2021-10-07 15:29:36,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:29:36,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:29:36,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:29:36,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:29:36,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:29:36,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:29:36,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:29:36,845 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:29:36,846 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 [2021-10-07 15:29:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:37,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:29:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:29:40,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:29:40,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672400982] [2021-10-07 15:29:40,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672400982] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:29:40,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:29:40,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-07 15:29:40,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514982393] [2021-10-07 15:29:40,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 15:29:40,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:29:40,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 15:29:40,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:29:40,426 INFO L87 Difference]: Start difference. First operand 3654 states and 14109 transitions. Second operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 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) [2021-10-07 15:30:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:41,879 INFO L93 Difference]: Finished difference Result 34175 states and 134520 transitions. [2021-10-07 15:30:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:30:41,881 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 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 [2021-10-07 15:30:41,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:42,137 INFO L225 Difference]: With dead ends: 34175 [2021-10-07 15:30:42,137 INFO L226 Difference]: Without dead ends: 34175 [2021-10-07 15:30:42,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 18431.1ms TimeCoverageRelationStatistics Valid=339, Invalid=591, Unknown=0, NotChecked=0, Total=930 [2021-10-07 15:30:42,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34175 states. [2021-10-07 15:30:42,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34175 to 3685. [2021-10-07 15:30:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 3655 states have (on average 3.877154582763338) internal successors, (14171), 3684 states have internal predecessors, (14171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:42,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 14171 transitions. [2021-10-07 15:30:42,725 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 14171 transitions. Word has length 11 [2021-10-07 15:30:42,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:42,725 INFO L470 AbstractCegarLoop]: Abstraction has 3685 states and 14171 transitions. [2021-10-07 15:30:42,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 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) [2021-10-07 15:30:42,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 14171 transitions. [2021-10-07 15:30:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:30:42,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:42,727 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:42,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-07 15:30:42,941 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 [2021-10-07 15:30:42,941 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:30:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1155794079, now seen corresponding path program 1 times [2021-10-07 15:30:42,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:42,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336895690] [2021-10-07 15:30:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:30:42,942 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:42,943 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) [2021-10-07 15:30:42,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:30:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:30:43,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:30:43,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:43,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:30:43,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:30:43,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:43,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336895690] [2021-10-07 15:30:43,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336895690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:30:43,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:30:43,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:30:43,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75180246] [2021-10-07 15:30:43,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:30:43,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:30:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:30:43,416 INFO L87 Difference]: Start difference. First operand 3685 states and 14171 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:43,881 INFO L93 Difference]: Finished difference Result 3867 states and 14338 transitions. [2021-10-07 15:30:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:30:43,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 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 [2021-10-07 15:30:43,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:43,893 INFO L225 Difference]: With dead ends: 3867 [2021-10-07 15:30:43,894 INFO L226 Difference]: Without dead ends: 3867 [2021-10-07 15:30:43,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:30:43,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3867 states. [2021-10-07 15:30:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3867 to 3649. [2021-10-07 15:30:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3649 states, 3619 states have (on average 3.8201160541586074) internal successors, (13825), 3648 states have internal predecessors, (13825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3649 states to 3649 states and 13825 transitions. [2021-10-07 15:30:43,972 INFO L78 Accepts]: Start accepts. Automaton has 3649 states and 13825 transitions. Word has length 12 [2021-10-07 15:30:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:43,973 INFO L470 AbstractCegarLoop]: Abstraction has 3649 states and 13825 transitions. [2021-10-07 15:30:43,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3649 states and 13825 transitions. [2021-10-07 15:30:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:30:43,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:43,975 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:43,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:44,187 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 [2021-10-07 15:30:44,188 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:30:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:44,189 INFO L82 PathProgramCache]: Analyzing trace with hash -868444933, now seen corresponding path program 2 times [2021-10-07 15:30:44,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:44,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278432487] [2021-10-07 15:30:44,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:30:44,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:44,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:44,192 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) [2021-10-07 15:30:44,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:30:44,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:30:44,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:44,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:30:44,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:44,500 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 [2021-10-07 15:30:44,505 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 [2021-10-07 15:30:44,651 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-07 15:30:44,652 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 22 [2021-10-07 15:30:44,683 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:30:44,683 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 20 treesize of output 20 [2021-10-07 15:30:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:30:45,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:30:45,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:45,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278432487] [2021-10-07 15:30:45,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278432487] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:30:45,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:30:45,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2021-10-07 15:30:45,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856319667] [2021-10-07 15:30:45,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:30:45,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:45,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:30:45,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:30:45,697 INFO L87 Difference]: Start difference. First operand 3649 states and 13825 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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) [2021-10-07 15:30:47,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:47,216 INFO L93 Difference]: Finished difference Result 5563 states and 20514 transitions. [2021-10-07 15:30:47,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:30:47,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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 12 [2021-10-07 15:30:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:47,232 INFO L225 Difference]: With dead ends: 5563 [2021-10-07 15:30:47,232 INFO L226 Difference]: Without dead ends: 5563 [2021-10-07 15:30:47,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 736.1ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:30:47,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5563 states. [2021-10-07 15:30:47,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5563 to 3452. [2021-10-07 15:30:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3452 states, 3422 states have (on average 3.885154880187025) internal successors, (13295), 3451 states have internal predecessors, (13295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:47,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3452 states to 3452 states and 13295 transitions. [2021-10-07 15:30:47,309 INFO L78 Accepts]: Start accepts. Automaton has 3452 states and 13295 transitions. Word has length 12 [2021-10-07 15:30:47,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:47,310 INFO L470 AbstractCegarLoop]: Abstraction has 3452 states and 13295 transitions. [2021-10-07 15:30:47,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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) [2021-10-07 15:30:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3452 states and 13295 transitions. [2021-10-07 15:30:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:30:47,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:47,311 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:47,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:30:47,512 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 [2021-10-07 15:30:47,512 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:30:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1636492171, now seen corresponding path program 1 times [2021-10-07 15:30:47,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:47,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830364422] [2021-10-07 15:30:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:30:47,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:47,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:47,516 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) [2021-10-07 15:30:47,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:30:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:30:47,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:30:47,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:30:48,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:30:48,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:48,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830364422] [2021-10-07 15:30:48,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830364422] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:48,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:48,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:30:48,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306386650] [2021-10-07 15:30:48,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:30:48,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:30:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:30:48,169 INFO L87 Difference]: Start difference. First operand 3452 states and 13295 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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) [2021-10-07 15:30:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:30:48,960 INFO L93 Difference]: Finished difference Result 6175 states and 22666 transitions. [2021-10-07 15:30:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:30:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:30:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:30:48,977 INFO L225 Difference]: With dead ends: 6175 [2021-10-07 15:30:48,977 INFO L226 Difference]: Without dead ends: 6175 [2021-10-07 15:30:48,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 202.0ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:30:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2021-10-07 15:30:49,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 3735. [2021-10-07 15:30:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3735 states, 3705 states have (on average 3.9195681511470983) internal successors, (14522), 3734 states have internal predecessors, (14522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:30:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 14522 transitions. [2021-10-07 15:30:49,059 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 14522 transitions. Word has length 12 [2021-10-07 15:30:49,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:30:49,060 INFO L470 AbstractCegarLoop]: Abstraction has 3735 states and 14522 transitions. [2021-10-07 15:30:49,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 12 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) [2021-10-07 15:30:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 14522 transitions. [2021-10-07 15:30:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:30:49,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:30:49,061 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:30:49,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-07 15:30:49,261 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 [2021-10-07 15:30:49,262 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:30:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:30:49,263 INFO L82 PathProgramCache]: Analyzing trace with hash 751605745, now seen corresponding path program 2 times [2021-10-07 15:30:49,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:30:49,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365481913] [2021-10-07 15:30:49,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:30:49,265 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:30:49,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:30:49,265 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) [2021-10-07 15:30:49,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:30:49,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:30:49,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:30:49,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:30:49,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:30:49,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:30:49,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:30:49,843 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:30:49,843 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 [2021-10-07 15:30:49,928 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:30:49,928 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 [2021-10-07 15:30:50,086 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:30:50,087 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 37 treesize of output 39 [2021-10-07 15:30:50,113 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 15:30:50,113 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 36 treesize of output 43 [2021-10-07 15:30:50,299 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-10-07 15:30:50,300 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 64 treesize of output 69 [2021-10-07 15:30:50,330 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-10-07 15:30:50,331 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 63 treesize of output 65 [2021-10-07 15:30:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:30:56,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:30:58,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:58,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365481913] [2021-10-07 15:30:58,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365481913] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:30:58,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:30:58,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-10-07 15:30:58,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474649140] [2021-10-07 15:30:58,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:30:58,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:30:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=81, Unknown=1, NotChecked=0, Total=110 [2021-10-07 15:30:58,043 INFO L87 Difference]: Start difference. First operand 3735 states and 14522 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 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) [2021-10-07 15:31:08,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:08,397 INFO L93 Difference]: Finished difference Result 4715 states and 17085 transitions. [2021-10-07 15:31:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:31:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 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 12 [2021-10-07 15:31:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:08,413 INFO L225 Difference]: With dead ends: 4715 [2021-10-07 15:31:08,413 INFO L226 Difference]: Without dead ends: 4715 [2021-10-07 15:31:08,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 12898.7ms TimeCoverageRelationStatistics Valid=55, Invalid=126, Unknown=1, NotChecked=0, Total=182 [2021-10-07 15:31:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4715 states. [2021-10-07 15:31:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4715 to 3090. [2021-10-07 15:31:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 3060 states have (on average 3.784640522875817) internal successors, (11581), 3089 states have internal predecessors, (11581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 11581 transitions. [2021-10-07 15:31:08,476 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 11581 transitions. Word has length 12 [2021-10-07 15:31:08,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:08,476 INFO L470 AbstractCegarLoop]: Abstraction has 3090 states and 11581 transitions. [2021-10-07 15:31:08,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 10 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) [2021-10-07 15:31:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 11581 transitions. [2021-10-07 15:31:08,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:31:08,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:08,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:08,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:31:08,680 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 [2021-10-07 15:31:08,680 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:31:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:08,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1206489894, now seen corresponding path program 1 times [2021-10-07 15:31:08,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:08,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171968499] [2021-10-07 15:31:08,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:31:08,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:08,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:08,684 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) [2021-10-07 15:31:08,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:31:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:31:09,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:31:09,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:09,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:31:09,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:31:09,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:09,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171968499] [2021-10-07 15:31:09,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171968499] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:09,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:09,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:31:09,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289889104] [2021-10-07 15:31:09,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:31:09,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:09,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:31:09,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:31:09,395 INFO L87 Difference]: Start difference. First operand 3090 states and 11581 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:10,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:10,038 INFO L93 Difference]: Finished difference Result 4445 states and 15823 transitions. [2021-10-07 15:31:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:31:10,039 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:31:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:10,050 INFO L225 Difference]: With dead ends: 4445 [2021-10-07 15:31:10,050 INFO L226 Difference]: Without dead ends: 4445 [2021-10-07 15:31:10,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 213.7ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:31:10,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4445 states. [2021-10-07 15:31:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4445 to 3542. [2021-10-07 15:31:10,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3512 states have (on average 3.790717539863326) internal successors, (13313), 3541 states have internal predecessors, (13313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 13313 transitions. [2021-10-07 15:31:10,144 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 13313 transitions. Word has length 13 [2021-10-07 15:31:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:10,144 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 13313 transitions. [2021-10-07 15:31:10,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:31:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 13313 transitions. [2021-10-07 15:31:10,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:31:10,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:10,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:10,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:31:10,350 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 [2021-10-07 15:31:10,350 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:31:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash 209585389, now seen corresponding path program 1 times [2021-10-07 15:31:10,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:10,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096806558] [2021-10-07 15:31:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:31:10,352 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:10,353 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) [2021-10-07 15:31:10,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 15:31:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:31:10,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-07 15:31:10,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:10,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:31:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:31:11,048 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:31:11,049 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 [2021-10-07 15:31:11,130 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:31:11,130 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 [2021-10-07 15:31:11,318 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:31:11,318 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 42 treesize of output 44 [2021-10-07 15:31:11,330 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:31:11,333 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 41 treesize of output 41 [2021-10-07 15:31:11,518 INFO L354 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2021-10-07 15:31:11,518 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 47 [2021-10-07 15:31:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:12,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:14,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:31:14,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:14,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096806558] [2021-10-07 15:31:14,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096806558] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:14,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:14,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-10-07 15:31:14,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681943969] [2021-10-07 15:31:14,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:31:14,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:31:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:31:14,267 INFO L87 Difference]: Start difference. First operand 3542 states and 13313 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) [2021-10-07 15:31:21,233 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2021-10-07 15:31:36,536 WARN L207 SmtUtils]: Spent 8.92 s on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-10-07 15:31:43,531 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-10-07 15:32:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:21,271 INFO L93 Difference]: Finished difference Result 18437 states and 70420 transitions. [2021-10-07 15:32:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 15:32:21,273 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 13 [2021-10-07 15:32:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:21,330 INFO L225 Difference]: With dead ends: 18437 [2021-10-07 15:32:21,331 INFO L226 Difference]: Without dead ends: 18437 [2021-10-07 15:32:21,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 48490.3ms TimeCoverageRelationStatistics Valid=394, Invalid=1328, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 15:32:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18437 states. [2021-10-07 15:32:21,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18437 to 4785. [2021-10-07 15:32:21,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4785 states, 4755 states have (on average 3.9735015772870663) internal successors, (18894), 4784 states have internal predecessors, (18894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4785 states to 4785 states and 18894 transitions. [2021-10-07 15:32:21,624 INFO L78 Accepts]: Start accepts. Automaton has 4785 states and 18894 transitions. Word has length 13 [2021-10-07 15:32:21,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:21,625 INFO L470 AbstractCegarLoop]: Abstraction has 4785 states and 18894 transitions. [2021-10-07 15:32:21,625 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) [2021-10-07 15:32:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 4785 states and 18894 transitions. [2021-10-07 15:32:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:32:21,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:21,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:21,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-07 15:32:21,841 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 [2021-10-07 15:32:21,842 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:32:21,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:21,843 INFO L82 PathProgramCache]: Analyzing trace with hash 209585479, now seen corresponding path program 1 times [2021-10-07 15:32:21,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:21,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025721648] [2021-10-07 15:32:21,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:32:21,845 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:21,846 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) [2021-10-07 15:32:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 15:32:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:32:22,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:32:22,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:22,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:32:22,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:22,611 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 25 treesize of output 21 [2021-10-07 15:32:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:32:22,698 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:22,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025721648] [2021-10-07 15:32:22,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025721648] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:22,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:22,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:32:22,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294720455] [2021-10-07 15:32:22,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:32:22,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:32:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:32:22,700 INFO L87 Difference]: Start difference. First operand 4785 states and 18894 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:24,700 INFO L93 Difference]: Finished difference Result 10932 states and 42575 transitions. [2021-10-07 15:32:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:32:24,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2021-10-07 15:32:24,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:24,829 INFO L225 Difference]: With dead ends: 10932 [2021-10-07 15:32:24,829 INFO L226 Difference]: Without dead ends: 10932 [2021-10-07 15:32:24,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 521.6ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:32:24,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2021-10-07 15:32:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 5151. [2021-10-07 15:32:24,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5151 states, 5121 states have (on average 4.038664323374341) internal successors, (20682), 5150 states have internal predecessors, (20682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 20682 transitions. [2021-10-07 15:32:24,984 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 20682 transitions. Word has length 13 [2021-10-07 15:32:24,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:24,985 INFO L470 AbstractCegarLoop]: Abstraction has 5151 states and 20682 transitions. [2021-10-07 15:32:24,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 20682 transitions. [2021-10-07 15:32:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:32:24,988 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:24,988 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:25,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-07 15:32:25,203 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 [2021-10-07 15:32:25,204 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:32:25,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:25,206 INFO L82 PathProgramCache]: Analyzing trace with hash -387441277, now seen corresponding path program 2 times [2021-10-07 15:32:25,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:25,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236294392] [2021-10-07 15:32:25,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:32:25,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:25,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:25,208 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) [2021-10-07 15:32:25,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 15:32:25,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:32:25,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:32:25,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:32:25,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:25,776 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 [2021-10-07 15:32:25,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-10-07 15:32:28,368 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-07 15:32:28,368 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 27 [2021-10-07 15:32:28,399 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:32:28,399 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 18 treesize of output 18 [2021-10-07 15:32:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:32:33,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:32:34,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:34,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236294392] [2021-10-07 15:32:34,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236294392] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:34,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:34,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-10-07 15:32:34,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950528862] [2021-10-07 15:32:34,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:32:34,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:32:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:32:34,067 INFO L87 Difference]: Start difference. First operand 5151 states and 20682 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 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) [2021-10-07 15:32:43,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:43,471 INFO L93 Difference]: Finished difference Result 17513 states and 67325 transitions. [2021-10-07 15:32:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:32:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 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 14 [2021-10-07 15:32:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:43,584 INFO L225 Difference]: With dead ends: 17513 [2021-10-07 15:32:43,584 INFO L226 Difference]: Without dead ends: 17513 [2021-10-07 15:32:43,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 9250.9ms TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:32:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17513 states. [2021-10-07 15:32:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17513 to 5048. [2021-10-07 15:32:43,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5018 states have (on average 4.140095655639697) internal successors, (20775), 5047 states have internal predecessors, (20775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 20775 transitions. [2021-10-07 15:32:43,754 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 20775 transitions. Word has length 14 [2021-10-07 15:32:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:43,755 INFO L470 AbstractCegarLoop]: Abstraction has 5048 states and 20775 transitions. [2021-10-07 15:32:43,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 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) [2021-10-07 15:32:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 20775 transitions. [2021-10-07 15:32:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:32:43,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:43,757 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:43,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:43,963 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 [2021-10-07 15:32:43,963 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:32:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:43,964 INFO L82 PathProgramCache]: Analyzing trace with hash -387441189, now seen corresponding path program 1 times [2021-10-07 15:32:43,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:43,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399677054] [2021-10-07 15:32:43,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:32:43,965 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:43,967 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) [2021-10-07 15:32:43,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 15:32:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:32:44,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:32:44,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:44,368 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 [2021-10-07 15:32:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:32:44,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:32:45,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:45,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399677054] [2021-10-07 15:32:45,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399677054] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:45,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:45,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:32:45,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863782572] [2021-10-07 15:32:45,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:32:45,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:32:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:32:45,348 INFO L87 Difference]: Start difference. First operand 5048 states and 20775 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:47,724 INFO L93 Difference]: Finished difference Result 11214 states and 44624 transitions. [2021-10-07 15:32:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:32:47,725 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 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 [2021-10-07 15:32:47,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:47,760 INFO L225 Difference]: With dead ends: 11214 [2021-10-07 15:32:47,761 INFO L226 Difference]: Without dead ends: 11214 [2021-10-07 15:32:47,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1062.7ms TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:32:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11214 states. [2021-10-07 15:32:47,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11214 to 6312. [2021-10-07 15:32:47,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6312 states, 6282 states have (on average 4.352594715058898) internal successors, (27343), 6311 states have internal predecessors, (27343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6312 states to 6312 states and 27343 transitions. [2021-10-07 15:32:47,988 INFO L78 Accepts]: Start accepts. Automaton has 6312 states and 27343 transitions. Word has length 14 [2021-10-07 15:32:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:47,988 INFO L470 AbstractCegarLoop]: Abstraction has 6312 states and 27343 transitions. [2021-10-07 15:32:47,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6312 states and 27343 transitions. [2021-10-07 15:32:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:32:47,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:47,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:32:48,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:48,204 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 [2021-10-07 15:32:48,205 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:32:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2092781241, now seen corresponding path program 1 times [2021-10-07 15:32:48,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:48,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749019195] [2021-10-07 15:32:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:32:48,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:48,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:48,209 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) [2021-10-07 15:32:48,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 15:32:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:32:48,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:32:48,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:32:48,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:48,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:32:48,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:48,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749019195] [2021-10-07 15:32:48,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749019195] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:48,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:48,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:32:48,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234671517] [2021-10-07 15:32:48,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:32:48,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:32:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:32:48,990 INFO L87 Difference]: Start difference. First operand 6312 states and 27343 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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) [2021-10-07 15:32:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:32:49,852 INFO L93 Difference]: Finished difference Result 7937 states and 32418 transitions. [2021-10-07 15:32:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:32:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:32:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:32:49,877 INFO L225 Difference]: With dead ends: 7937 [2021-10-07 15:32:49,877 INFO L226 Difference]: Without dead ends: 7937 [2021-10-07 15:32:49,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 210.4ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:32:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2021-10-07 15:32:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 6846. [2021-10-07 15:32:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6846 states, 6816 states have (on average 4.282863849765258) internal successors, (29192), 6845 states have internal predecessors, (29192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:32:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 29192 transitions. [2021-10-07 15:32:50,081 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 29192 transitions. Word has length 14 [2021-10-07 15:32:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:32:50,082 INFO L470 AbstractCegarLoop]: Abstraction has 6846 states and 29192 transitions. [2021-10-07 15:32:50,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 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) [2021-10-07 15:32:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 29192 transitions. [2021-10-07 15:32:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:32:50,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:32:50,085 INFO L512 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2021-10-07 15:32:50,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 15:32:50,298 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 [2021-10-07 15:32:50,299 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:32:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:32:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1094142475, now seen corresponding path program 2 times [2021-10-07 15:32:50,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:32:50,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017963751] [2021-10-07 15:32:50,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:32:50,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:32:50,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:32:50,302 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) [2021-10-07 15:32:50,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 15:32:50,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:32:50,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:32:50,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 15:32:50,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:32:50,788 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 [2021-10-07 15:32:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:51,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:32:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:32:56,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:32:56,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017963751] [2021-10-07 15:32:56,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017963751] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:32:56,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:32:56,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-10-07 15:32:56,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647794326] [2021-10-07 15:32:56,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 15:32:56,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:32:56,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 15:32:56,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:32:56,265 INFO L87 Difference]: Start difference. First operand 6846 states and 29192 transitions. Second operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:34:27,360 INFO L93 Difference]: Finished difference Result 71739 states and 311161 transitions. [2021-10-07 15:34:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 15:34:27,364 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 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 [2021-10-07 15:34:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:34:28,466 INFO L225 Difference]: With dead ends: 71739 [2021-10-07 15:34:28,466 INFO L226 Difference]: Without dead ends: 71739 [2021-10-07 15:34:28,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 32543.9ms TimeCoverageRelationStatistics Valid=558, Invalid=1002, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 15:34:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71739 states. [2021-10-07 15:34:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71739 to 6929. [2021-10-07 15:34:29,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6929 states, 6899 states have (on average 4.255399333236701) internal successors, (29358), 6928 states have internal predecessors, (29358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:29,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 29358 transitions. [2021-10-07 15:34:29,538 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 29358 transitions. Word has length 15 [2021-10-07 15:34:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:34:29,538 INFO L470 AbstractCegarLoop]: Abstraction has 6929 states and 29358 transitions. [2021-10-07 15:34:29,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 29358 transitions. [2021-10-07 15:34:29,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:34:29,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:34:29,556 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:34:29,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 15:34:29,757 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 [2021-10-07 15:34:29,757 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:34:29,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:34:29,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1562502888, now seen corresponding path program 2 times [2021-10-07 15:34:29,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:34:29,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249555844] [2021-10-07 15:34:29,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:34:29,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:34:29,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:34:29,760 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) [2021-10-07 15:34:29,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 15:34:30,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:34:30,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:34:30,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:34:30,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:34:30,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:34:30,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:34:30,454 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 15:34:30,455 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 [2021-10-07 15:34:30,544 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 15:34:30,544 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 [2021-10-07 15:34:30,668 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:34:30,669 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 30 treesize of output 32 [2021-10-07 15:34:30,680 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:34:30,680 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 29 treesize of output 29 [2021-10-07 15:34:30,954 INFO L354 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2021-10-07 15:34:30,955 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 40 [2021-10-07 15:34:33,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:34:33,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:34:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 15:34:35,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:34:35,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249555844] [2021-10-07 15:34:35,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249555844] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:34:35,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:34:35,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-07 15:34:35,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622502306] [2021-10-07 15:34:35,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:34:35,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:34:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:34:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:34:35,441 INFO L87 Difference]: Start difference. First operand 6929 states and 29358 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:45,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:34:45,305 INFO L93 Difference]: Finished difference Result 8909 states and 36925 transitions. [2021-10-07 15:34:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:34:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:34:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:34:45,337 INFO L225 Difference]: With dead ends: 8909 [2021-10-07 15:34:45,338 INFO L226 Difference]: Without dead ends: 8909 [2021-10-07 15:34:45,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5592.8ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:34:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2021-10-07 15:34:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 5969. [2021-10-07 15:34:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5969 states, 5939 states have (on average 4.3047651119717125) internal successors, (25566), 5968 states have internal predecessors, (25566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5969 states to 5969 states and 25566 transitions. [2021-10-07 15:34:45,512 INFO L78 Accepts]: Start accepts. Automaton has 5969 states and 25566 transitions. Word has length 15 [2021-10-07 15:34:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:34:45,513 INFO L470 AbstractCegarLoop]: Abstraction has 5969 states and 25566 transitions. [2021-10-07 15:34:45,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:45,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5969 states and 25566 transitions. [2021-10-07 15:34:45,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:34:45,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:34:45,515 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:34:45,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-07 15:34:45,716 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 [2021-10-07 15:34:45,717 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting thread3Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:34:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:34:45,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1053007320, now seen corresponding path program 1 times [2021-10-07 15:34:45,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:34:45,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616253868] [2021-10-07 15:34:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:34:45,769 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:34:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:34:45,770 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) [2021-10-07 15:34:45,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 15:34:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:34:46,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:34:46,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:34:46,225 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 [2021-10-07 15:34:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:34:46,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:34:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:34:46,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:34:46,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616253868] [2021-10-07 15:34:46,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616253868] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:34:46,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:34:46,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:34:46,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228226139] [2021-10-07 15:34:46,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:34:46,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:34:46,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:34:46,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:34:46,993 INFO L87 Difference]: Start difference. First operand 5969 states and 25566 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:34:49,155 INFO L93 Difference]: Finished difference Result 9917 states and 41039 transitions. [2021-10-07 15:34:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:34:49,157 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:34:49,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:34:49,189 INFO L225 Difference]: With dead ends: 9917 [2021-10-07 15:34:49,189 INFO L226 Difference]: Without dead ends: 9917 [2021-10-07 15:34:49,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 857.4ms TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:34:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9917 states. [2021-10-07 15:34:49,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9917 to 6893. [2021-10-07 15:34:49,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6893 states, 6863 states have (on average 4.5082325513623775) internal successors, (30940), 6892 states have internal predecessors, (30940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:49,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6893 states to 6893 states and 30940 transitions. [2021-10-07 15:34:49,431 INFO L78 Accepts]: Start accepts. Automaton has 6893 states and 30940 transitions. Word has length 15 [2021-10-07 15:34:49,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:34:49,431 INFO L470 AbstractCegarLoop]: Abstraction has 6893 states and 30940 transitions. [2021-10-07 15:34:49,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:34:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 6893 states and 30940 transitions. [2021-10-07 15:34:49,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:34:49,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:34:49,434 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:34:49,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 15:34:49,643 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 [2021-10-07 15:34:49,644 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 67 more)] === [2021-10-07 15:34:49,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:34:49,645 INFO L82 PathProgramCache]: Analyzing trace with hash -860036198, now seen corresponding path program 2 times [2021-10-07 15:34:49,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:34:49,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108405924] [2021-10-07 15:34:49,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:34:49,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:34:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:34:49,648 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) [2021-10-07 15:34:49,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 15:34:50,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:34:50,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:34:50,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:34:50,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:34:50,202 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 [2021-10-07 15:34:50,208 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 [2021-10-07 15:34:50,294 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-07 15:34:50,294 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 22 [2021-10-07 15:34:50,320 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:34:50,320 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 18 treesize of output 18 Received shutdown request... [2021-10-07 15:34:51,796 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 [2021-10-07 15:34:51,803 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:34:52,407 WARN L223 SmtUtils]: Removed 4 from assertion stack [2021-10-07 15:34:52,409 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 15:34:52,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-07 15:34:52,610 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 [2021-10-07 15:34:52,610 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. [2021-10-07 15:34:52,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:34:52,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:34:52,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 15:34:52,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 15:34:52,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 15:34:52,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 15:34:52,614 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6REQUIRES_VIOLATION [2021-10-07 15:34:52,615 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6REQUIRES_VIOLATION [2021-10-07 15:34:52,616 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7REQUIRES_VIOLATION [2021-10-07 15:34:52,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:34:52,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:34:52,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:34:52,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:34:52,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:34:52,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:34:52,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 15:34:52,618 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 15:34:52,619 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 15:34:52,620 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err4REQUIRES_VIOLATION [2021-10-07 15:34:52,621 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err5REQUIRES_VIOLATION [2021-10-07 15:34:52,622 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err6REQUIRES_VIOLATION [2021-10-07 15:34:52,622 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err7REQUIRES_VIOLATION [2021-10-07 15:34:52,629 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:34:52,629 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:34:52,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:34:52 BasicIcfg [2021-10-07 15:34:52,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:34:52,632 INFO L168 Benchmark]: Toolchain (without parser) took 833641.64 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 889.2 MB). Free memory was 126.6 MB in the beginning and 584.5 MB in the end (delta: -457.9 MB). Peak memory consumption was 431.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:34:52,632 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:34:52,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.35 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 112.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:34:52,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.33 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 110.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:34:52,633 INFO L168 Benchmark]: Boogie Preprocessor took 46.59 ms. Allocated memory is still 151.0 MB. Free memory was 110.3 MB in the beginning and 108.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:34:52,633 INFO L168 Benchmark]: RCFGBuilder took 1185.45 ms. Allocated memory is still 151.0 MB. Free memory was 108.4 MB in the beginning and 116.5 MB in the end (delta: -8.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:34:52,634 INFO L168 Benchmark]: TraceAbstraction took 831961.84 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 889.2 MB). Free memory was 116.0 MB in the beginning and 584.5 MB in the end (delta: -468.6 MB). Peak memory consumption was 420.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:34:52,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.35 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 112.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.33 ms. Allocated memory is still 151.0 MB. Free memory was 112.4 MB in the beginning and 110.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.59 ms. Allocated memory is still 151.0 MB. Free memory was 110.3 MB in the beginning and 108.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1185.45 ms. Allocated memory is still 151.0 MB. Free memory was 108.4 MB in the beginning and 116.5 MB in the end (delta: -8.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 831961.84 ms. Allocated memory was 151.0 MB in the beginning and 1.0 GB in the end (delta: 889.2 MB). Free memory was 116.0 MB in the beginning and 584.5 MB in the end (delta: -468.6 MB). Peak memory consumption was 420.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 48860.6ms, 273 PlacesBefore, 85 PlacesAfterwards, 285 TransitionsBefore, 83 TransitionsAfterwards, 9114 CoEnabledTransitionPairs, 7 FixpointIterations, 154 TrivialSequentialCompositions, 119 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 14 ConcurrentYvCompositions, 14 ChoiceCompositions, 321 TotalNumberOfCompositions, 19044 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14095, positive: 13864, positive conditional: 0, positive unconditional: 13864, negative: 231, negative conditional: 0, negative unconditional: 231, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6159, positive: 6105, positive conditional: 0, positive unconditional: 6105, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6159, positive: 6105, positive conditional: 0, positive unconditional: 6105, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2841, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2841, negative conditional: 0, negative unconditional: 2841, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14095, positive: 7759, positive conditional: 0, positive unconditional: 7759, negative: 177, negative conditional: 0, negative unconditional: 177, unknown: 6159, unknown conditional: 0, unknown unconditional: 6159] , Statistics on independence cache: Total cache size (in pairs): 725, Positive cache size: 702, Positive conditional cache size: 0, Positive unconditional cache size: 702, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - 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 BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 22 for 2008ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 354 locations, 71 error locations. Started 1 CEGAR loops. OverallTime: 831733.5ms, OverallIterations: 37, TraceHistogramMax: 12, EmptinessCheckTime: 143.8ms, AutomataDifference: 574813.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 49311.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1940 SDtfs, 18767 SDslu, 9158 SDs, 0 SdLazy, 20069 SolverSat, 1630 SolverUnsat, 84 SolverUnknown, 0 SolverNotchecked, 290253.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 849 GetRequests, 339 SyntacticMatches, 13 SemanticMatches, 497 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2247 ImplicationChecksByTransitivity, 365609.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10140occurred in iteration=0, InterpolantAutomatonStates: 415, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9918.9ms AutomataMinimizationTime, 36 MinimizatonAttempts, 283665 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 409.1ms SsaConstructionTime, 3099.1ms SatisfiabilityAnalysisTime, 140846.0ms InterpolantComputationTime, 356 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 640 ConstructedInterpolants, 138 QuantifiedInterpolants, 12688 SizeOfPredicates, 253 NumberOfNonLiveVariables, 3744 ConjunctsInSsa, 450 ConjunctsInUnsatCore, 72 InterpolantComputations, 38 PerfectInterpolantSequences, 112/434 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