/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:11:36,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:11:36,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:11:36,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:11:36,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 16:11:36,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 16:11:36,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 16:11:36,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 16:11:36,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 16:11:36,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 16:11:36,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 16:11:36,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 16:11:36,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 16:11:36,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 16:11:36,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 16:11:36,401 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 16:11:36,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 16:11:36,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-07 16:11:36,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-07 16:11:36,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-07 16:11:36,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-07 16:11:36,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-07 16:11:36,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-07 16:11:36,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-07 16:11:36,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-07 16:11:36,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:11:36,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:11:36,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:11:36,419 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 16:11:36,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:11:36,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:11:36,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:11:36,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:11:36,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:11:36,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:11:36,456 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:11:36,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:11:36,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:11:36,458 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:11:36,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:11:36,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:11:36,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:11:36,459 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:11:36,459 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:11:36,460 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:11:36,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:11:36,461 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:11:36,461 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:11:36,461 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:11:36,462 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:11:36,462 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:11:36,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:11:36,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:11:36,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:11:36,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:11:36,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:11:36,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:11:36,465 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:11:36,465 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:11:36,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:11:36,465 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:11:36,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:11:36,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:11:36,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:11:36,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:11:36,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:11:36,992 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:11:36,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2021-10-07 16:11:37,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1a47a9a/110934c164364991941e1caf8f6d14ac/FLAG812559824 [2021-10-07 16:11:37,776 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:11:37,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c [2021-10-07 16:11:37,788 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1a47a9a/110934c164364991941e1caf8f6d14ac/FLAG812559824 [2021-10-07 16:11:38,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac1a47a9a/110934c164364991941e1caf8f6d14ac [2021-10-07 16:11:38,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:11:38,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:11:38,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:11:38,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:11:38,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:11:38,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3f4307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38, skipping insertion in model container [2021-10-07 16:11:38,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:11:38,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:11:38,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2352,2365] [2021-10-07 16:11:38,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:11:38,376 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 16:11:38,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:11:38,399 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2352,2365] [2021-10-07 16:11:38,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:11:38,411 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:11:38,439 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum.wvr.c[2352,2365] [2021-10-07 16:11:38,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:11:38,468 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:11:38,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38 WrapperNode [2021-10-07 16:11:38,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:11:38,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:11:38,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:11:38,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:11:38,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:11:38,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:11:38,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:11:38,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:11:38,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:11:38,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:11:38,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:11:38,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:11:38,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (1/1) ... [2021-10-07 16:11:38,593 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:11:38,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:11:38,623 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 16:11:38,647 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 16:11:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:11:38,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:11:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:11:38,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:11:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-07 16:11:38,691 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-07 16:11:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:11:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:11:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 16:11:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:11:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:11:38,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:11:38,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:11:38,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:11:38,695 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 16:11:39,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:11:39,490 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-10-07 16:11:39,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:11:39 BoogieIcfgContainer [2021-10-07 16:11:39,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:11:39,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:11:39,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:11:39,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:11:39,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:11:38" (1/3) ... [2021-10-07 16:11:39,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52af5637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:11:39, skipping insertion in model container [2021-10-07 16:11:39,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:11:38" (2/3) ... [2021-10-07 16:11:39,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52af5637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:11:39, skipping insertion in model container [2021-10-07 16:11:39,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:11:39" (3/3) ... [2021-10-07 16:11:39,504 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2021-10-07 16:11:39,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:11:39,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-07 16:11:39,511 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:11:39,561 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,561 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,561 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,562 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,562 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,562 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,562 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,562 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,563 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,563 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,563 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,563 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,564 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,564 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,564 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,564 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,565 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,565 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,565 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,565 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,566 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,566 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,566 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,568 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,568 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,569 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,569 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,570 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,571 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,572 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,572 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,573 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,573 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,573 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,573 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,574 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,575 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,575 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,575 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,576 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,576 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,577 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,578 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,578 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,578 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,579 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,579 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,580 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,580 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,581 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,581 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,581 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,581 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,582 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,582 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,582 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,582 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,582 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,583 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,583 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,583 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,583 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,584 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,584 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,584 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,584 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,585 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,585 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,585 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,586 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,587 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,587 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,588 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,588 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,588 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,588 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,588 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,589 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,589 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,589 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,593 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,594 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,594 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,599 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,600 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,600 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,600 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,600 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,600 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,603 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,603 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,603 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,604 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,604 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,604 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:11:39,612 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-07 16:11:39,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:11:39,676 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 16:11:39,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-10-07 16:11:39,711 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:11:39,731 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 213 transitions, 450 flow [2021-10-07 16:11:39,741 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 213 transitions, 450 flow [2021-10-07 16:11:39,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 207 places, 213 transitions, 450 flow [2021-10-07 16:11:39,901 INFO L129 PetriNetUnfolder]: 16/210 cut-off events. [2021-10-07 16:11:39,901 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-07 16:11:39,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 210 events. 16/210 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 310 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2021-10-07 16:11:39,919 INFO L116 LiptonReduction]: Number of co-enabled transitions 3888 [2021-10-07 16:12:11,890 INFO L131 LiptonReduction]: Checked pairs total: 5752 [2021-10-07 16:12:11,890 INFO L133 LiptonReduction]: Total number of compositions: 222 [2021-10-07 16:12:11,906 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 66 places, 61 transitions, 146 flow [2021-10-07 16:12:12,032 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2345 states, 1843 states have (on average 4.500813890396094) internal successors, (8295), 2344 states have internal predecessors, (8295), 0 states have call successors, (0), 0 states 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 16:12:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 2345 states, 1843 states have (on average 4.500813890396094) internal successors, (8295), 2344 states have internal predecessors, (8295), 0 states have call successors, (0), 0 states 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 16:12:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:12:12,050 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:12,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:12:12,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:12,058 INFO L82 PathProgramCache]: Analyzing trace with hash 25696, now seen corresponding path program 1 times [2021-10-07 16:12:12,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:12,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754378879] [2021-10-07 16:12:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:12,074 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:12,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:12,078 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 16:12:12,087 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 16:12:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:12,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:12:12,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:12,407 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:12:12,408 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 16:12:12,478 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 16:12:12,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:12,484 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 16:12:12,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:12,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754378879] [2021-10-07 16:12:12,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754378879] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:12:12,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:12:12,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:12:12,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398334341] [2021-10-07 16:12:12,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:12:12,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:12:12,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:12:12,540 INFO L87 Difference]: Start difference. First operand has 2345 states, 1843 states have (on average 4.500813890396094) internal successors, (8295), 2344 states have internal predecessors, (8295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:12:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:12,900 INFO L93 Difference]: Finished difference Result 2342 states and 8292 transitions. [2021-10-07 16:12:12,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:12:12,903 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 16:12:12,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:12,951 INFO L225 Difference]: With dead ends: 2342 [2021-10-07 16:12:12,952 INFO L226 Difference]: Without dead ends: 2342 [2021-10-07 16:12:12,953 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:12:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-10-07 16:12:13,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2342. [2021-10-07 16:12:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 1843 states have (on average 4.499186109603906) internal successors, (8292), 2341 states have internal predecessors, (8292), 0 states have call successors, (0), 0 states 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 16:12:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 8292 transitions. [2021-10-07 16:12:13,135 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 8292 transitions. Word has length 2 [2021-10-07 16:12:13,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:13,136 INFO L470 AbstractCegarLoop]: Abstraction has 2342 states and 8292 transitions. [2021-10-07 16:12:13,136 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 16:12:13,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 8292 transitions. [2021-10-07 16:12:13,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 16:12:13,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:13,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 16:12:13,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:12:13,353 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 16:12:13,354 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:13,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:13,356 INFO L82 PathProgramCache]: Analyzing trace with hash 25697, now seen corresponding path program 1 times [2021-10-07 16:12:13,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:13,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622831567] [2021-10-07 16:12:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:13,357 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:13,359 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 16:12:13,367 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 16:12:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:13,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:12:13,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:13,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:12:13,791 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:12:13,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:12:13,923 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 16:12:13,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:14,044 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 16:12:14,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:14,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622831567] [2021-10-07 16:12:14,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622831567] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:12:14,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:12:14,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:12:14,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621094936] [2021-10-07 16:12:14,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:12:14,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:12:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:12:14,052 INFO L87 Difference]: Start difference. First operand 2342 states and 8292 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:12:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:15,078 INFO L93 Difference]: Finished difference Result 4683 states and 16587 transitions. [2021-10-07 16:12:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:12:15,081 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 16:12:15,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:15,140 INFO L225 Difference]: With dead ends: 4683 [2021-10-07 16:12:15,141 INFO L226 Difference]: Without dead ends: 4683 [2021-10-07 16:12:15,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:12:15,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2021-10-07 16:12:15,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 2346. [2021-10-07 16:12:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 1847 states have (on average 4.49593936112615) internal successors, (8304), 2345 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states 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 16:12:15,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 8304 transitions. [2021-10-07 16:12:15,292 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 8304 transitions. Word has length 2 [2021-10-07 16:12:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:15,293 INFO L470 AbstractCegarLoop]: Abstraction has 2346 states and 8304 transitions. [2021-10-07 16:12:15,293 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 16:12:15,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 8304 transitions. [2021-10-07 16:12:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:12:15,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:15,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:12:15,307 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 16:12:15,507 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 16:12:15,508 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:15,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:15,510 INFO L82 PathProgramCache]: Analyzing trace with hash 801198, now seen corresponding path program 1 times [2021-10-07 16:12:15,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:15,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040277873] [2021-10-07 16:12:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:15,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:15,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:15,513 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 16:12:15,514 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 16:12:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:15,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:12:15,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:15,650 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 16:12:15,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:15,701 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 16:12:15,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:15,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040277873] [2021-10-07 16:12:15,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040277873] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:12:15,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:12:15,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:12:15,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517741494] [2021-10-07 16:12:15,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:12:15,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:15,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:12:15,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:12:15,707 INFO L87 Difference]: Start difference. First operand 2346 states and 8304 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:12:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:16,065 INFO L93 Difference]: Finished difference Result 2347 states and 8301 transitions. [2021-10-07 16:12:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:12:16,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:12:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:16,094 INFO L225 Difference]: With dead ends: 2347 [2021-10-07 16:12:16,094 INFO L226 Difference]: Without dead ends: 2346 [2021-10-07 16:12:16,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.2ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:12:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-10-07 16:12:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2346. [2021-10-07 16:12:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2346 states, 1847 states have (on average 4.493773687060098) internal successors, (8300), 2345 states have internal predecessors, (8300), 0 states have call successors, (0), 0 states 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 16:12:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2346 states to 2346 states and 8300 transitions. [2021-10-07 16:12:16,277 INFO L78 Accepts]: Start accepts. Automaton has 2346 states and 8300 transitions. Word has length 3 [2021-10-07 16:12:16,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:16,277 INFO L470 AbstractCegarLoop]: Abstraction has 2346 states and 8300 transitions. [2021-10-07 16:12:16,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:12:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2346 states and 8300 transitions. [2021-10-07 16:12:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 16:12:16,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:16,279 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 16:12:16,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 16:12:16,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:12:16,491 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:16,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:16,492 INFO L82 PathProgramCache]: Analyzing trace with hash 24786017, now seen corresponding path program 1 times [2021-10-07 16:12:16,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:16,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935810305] [2021-10-07 16:12:16,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:16,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:16,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:16,494 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:12:16,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:12:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:16,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:12:16,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:16,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:12:16,922 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:12:16,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:12:17,113 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 16:12:17,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:17,757 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 16:12:17,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:17,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935810305] [2021-10-07 16:12:17,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935810305] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:12:17,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:12:17,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:12:17,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646000622] [2021-10-07 16:12:17,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:12:17,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:12:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:12:17,761 INFO L87 Difference]: Start difference. First operand 2346 states and 8300 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 16:12:23,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:23,273 INFO L93 Difference]: Finished difference Result 11702 states and 41456 transitions. [2021-10-07 16:12:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:12:23,279 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 16:12:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:23,409 INFO L225 Difference]: With dead ends: 11702 [2021-10-07 16:12:23,409 INFO L226 Difference]: Without dead ends: 11702 [2021-10-07 16:12:23,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1029.2ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:12:23,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11702 states. [2021-10-07 16:12:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11702 to 2354. [2021-10-07 16:12:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2354 states, 1855 states have (on average 4.48733153638814) internal successors, (8324), 2353 states have internal predecessors, (8324), 0 states have call successors, (0), 0 states 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 16:12:23,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2354 states to 2354 states and 8324 transitions. [2021-10-07 16:12:23,717 INFO L78 Accepts]: Start accepts. Automaton has 2354 states and 8324 transitions. Word has length 4 [2021-10-07 16:12:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:23,717 INFO L470 AbstractCegarLoop]: Abstraction has 2354 states and 8324 transitions. [2021-10-07 16:12:23,717 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 16:12:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2354 states and 8324 transitions. [2021-10-07 16:12:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:12:23,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:23,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:12:23,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:12:23,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:12:23,933 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:23,934 INFO L82 PathProgramCache]: Analyzing trace with hash 768421648, now seen corresponding path program 1 times [2021-10-07 16:12:23,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:23,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658650038] [2021-10-07 16:12:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:23,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:23,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:23,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:12:23,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:12:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:24,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:12:24,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:24,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:12:24,482 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:12:24,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 103 [2021-10-07 16:12:24,515 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 16:12:24,516 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 106 treesize of output 102 [2021-10-07 16:12:27,324 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:12:27,325 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 67 treesize of output 78 [2021-10-07 16:12:27,876 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 16:12:27,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:28,217 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 16:12:28,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:28,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658650038] [2021-10-07 16:12:28,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658650038] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:12:28,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:12:28,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:12:28,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100444161] [2021-10-07 16:12:28,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:12:28,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:12:28,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:12:28,220 INFO L87 Difference]: Start difference. First operand 2354 states and 8324 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 16:12:34,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:34,688 INFO L93 Difference]: Finished difference Result 9475 states and 32536 transitions. [2021-10-07 16:12:34,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:12:34,689 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:12:34,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:34,751 INFO L225 Difference]: With dead ends: 9475 [2021-10-07 16:12:34,752 INFO L226 Difference]: Without dead ends: 9475 [2021-10-07 16:12:34,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2714.6ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:12:34,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9475 states. [2021-10-07 16:12:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9475 to 1913. [2021-10-07 16:12:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1539 states have (on average 4.257309941520468) internal successors, (6552), 1912 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states 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 16:12:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 6552 transitions. [2021-10-07 16:12:34,933 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 6552 transitions. Word has length 5 [2021-10-07 16:12:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:34,934 INFO L470 AbstractCegarLoop]: Abstraction has 1913 states and 6552 transitions. [2021-10-07 16:12:34,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 16:12:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 6552 transitions. [2021-10-07 16:12:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:12:34,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:34,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:12:34,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:12:35,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:12:35,149 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:35,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:35,150 INFO L82 PathProgramCache]: Analyzing trace with hash 768421649, now seen corresponding path program 1 times [2021-10-07 16:12:35,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:35,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26830731] [2021-10-07 16:12:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:35,152 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:35,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:35,153 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 16:12:35,161 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 16:12:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:35,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:12:35,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:35,386 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:12:35,387 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 35 treesize of output 47 [2021-10-07 16:12:35,539 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 16:12:35,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-10-07 16:12:35,658 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 16:12:35,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:35,689 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 16:12:35,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:35,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26830731] [2021-10-07 16:12:35,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26830731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:12:35,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:12:35,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:12:35,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472967531] [2021-10-07 16:12:35,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:12:35,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:35,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:12:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:12:35,693 INFO L87 Difference]: Start difference. First operand 1913 states and 6552 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 16:12:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:35,885 INFO L93 Difference]: Finished difference Result 1464 states and 4748 transitions. [2021-10-07 16:12:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:12:35,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:12:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:35,893 INFO L225 Difference]: With dead ends: 1464 [2021-10-07 16:12:35,894 INFO L226 Difference]: Without dead ends: 1464 [2021-10-07 16:12:35,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:12:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2021-10-07 16:12:35,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2021-10-07 16:12:35,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1216 states have (on average 3.9046052631578947) internal successors, (4748), 1463 states have internal predecessors, (4748), 0 states have call successors, (0), 0 states 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 16:12:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 4748 transitions. [2021-10-07 16:12:35,947 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 4748 transitions. Word has length 5 [2021-10-07 16:12:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:35,947 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 4748 transitions. [2021-10-07 16:12:35,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 16:12:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 4748 transitions. [2021-10-07 16:12:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:12:35,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:35,948 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:12:35,962 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 16:12:36,162 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 16:12:36,162 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash -281151541, now seen corresponding path program 1 times [2021-10-07 16:12:36,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:36,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474707428] [2021-10-07 16:12:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:36,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:36,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:36,165 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 16:12:36,201 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 16:12:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:36,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:12:36,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:36,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:12:36,632 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:12:36,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 91 [2021-10-07 16:12:36,640 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 93 treesize of output 91 [2021-10-07 16:12:38,878 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:12:38,879 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 63 treesize of output 74 [2021-10-07 16:12:39,556 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 16:12:39,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:40,025 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 16:12:40,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:40,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474707428] [2021-10-07 16:12:40,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474707428] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:12:40,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:12:40,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:12:40,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708388858] [2021-10-07 16:12:40,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:12:40,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:12:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:12:40,028 INFO L87 Difference]: Start difference. First operand 1464 states and 4748 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 16:12:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:44,804 INFO L93 Difference]: Finished difference Result 6934 states and 22687 transitions. [2021-10-07 16:12:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:12:44,805 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 16:12:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:44,875 INFO L225 Difference]: With dead ends: 6934 [2021-10-07 16:12:44,875 INFO L226 Difference]: Without dead ends: 6934 [2021-10-07 16:12:44,876 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1945.7ms TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:12:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6934 states. [2021-10-07 16:12:44,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6934 to 1417. [2021-10-07 16:12:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 1194 states have (on average 3.85678391959799) internal successors, (4605), 1416 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states 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 16:12:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 4605 transitions. [2021-10-07 16:12:44,997 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 4605 transitions. Word has length 7 [2021-10-07 16:12:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:44,998 INFO L470 AbstractCegarLoop]: Abstraction has 1417 states and 4605 transitions. [2021-10-07 16:12:44,998 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 16:12:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 4605 transitions. [2021-10-07 16:12:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 16:12:45,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:45,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:12:45,014 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 16:12:45,213 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 16:12:45,214 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:45,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:45,216 INFO L82 PathProgramCache]: Analyzing trace with hash -281151539, now seen corresponding path program 1 times [2021-10-07 16:12:45,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:45,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210584016] [2021-10-07 16:12:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:12:45,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:45,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:45,218 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 16:12:45,219 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 16:12:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:12:45,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:12:45,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:45,432 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:12:45,433 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 39 treesize of output 51 [2021-10-07 16:12:45,603 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 16:12:45,604 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 31 treesize of output 42 [2021-10-07 16:12:45,763 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 16:12:45,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:45,800 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 16:12:45,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:45,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210584016] [2021-10-07 16:12:45,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210584016] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:12:45,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:12:45,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:12:45,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865239410] [2021-10-07 16:12:45,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:12:45,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:45,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:12:45,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:12:45,804 INFO L87 Difference]: Start difference. First operand 1417 states and 4605 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 16:12:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:12:45,987 INFO L93 Difference]: Finished difference Result 1353 states and 4413 transitions. [2021-10-07 16:12:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:12:45,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 16:12:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:12:45,994 INFO L225 Difference]: With dead ends: 1353 [2021-10-07 16:12:45,994 INFO L226 Difference]: Without dead ends: 1353 [2021-10-07 16:12:45,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:12:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-10-07 16:12:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1353. [2021-10-07 16:12:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1160 states have (on average 3.804310344827586) internal successors, (4413), 1352 states have internal predecessors, (4413), 0 states have call successors, (0), 0 states 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 16:12:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 4413 transitions. [2021-10-07 16:12:46,059 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 4413 transitions. Word has length 7 [2021-10-07 16:12:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:12:46,059 INFO L470 AbstractCegarLoop]: Abstraction has 1353 states and 4413 transitions. [2021-10-07 16:12:46,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 16:12:46,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 4413 transitions. [2021-10-07 16:12:46,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:12:46,060 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:12:46,060 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 16:12:46,076 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 16:12:46,273 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 16:12:46,274 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:12:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:12:46,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1680747423, now seen corresponding path program 2 times [2021-10-07 16:12:46,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:12:46,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796276106] [2021-10-07 16:12:46,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:12:46,277 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:12:46,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:12:46,278 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 16:12:46,280 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 16:12:46,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:12:46,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:12:46,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:12:46,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:12:46,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:12:46,731 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:12:46,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:12:47,049 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:12:47,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:12:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:12:48,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:12:48,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796276106] [2021-10-07 16:12:48,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796276106] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:12:48,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:12:48,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:12:48,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051021620] [2021-10-07 16:12:48,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:12:48,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:12:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:12:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:12:48,830 INFO L87 Difference]: Start difference. First operand 1353 states and 4413 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:09,617 INFO L93 Difference]: Finished difference Result 10670 states and 34992 transitions. [2021-10-07 16:13:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:13:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:13:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:09,707 INFO L225 Difference]: With dead ends: 10670 [2021-10-07 16:13:09,707 INFO L226 Difference]: Without dead ends: 10670 [2021-10-07 16:13:09,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5369.3ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:13:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2021-10-07 16:13:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 1367. [2021-10-07 16:13:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1174 states have (on average 3.7853492333901193) internal successors, (4444), 1366 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states 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 16:13:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 4444 transitions. [2021-10-07 16:13:09,891 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 4444 transitions. Word has length 8 [2021-10-07 16:13:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:09,892 INFO L470 AbstractCegarLoop]: Abstraction has 1367 states and 4444 transitions. [2021-10-07 16:13:09,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:13:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 4444 transitions. [2021-10-07 16:13:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:13:09,893 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:09,893 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-07 16:13:09,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:13:10,107 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 16:13:10,108 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:13:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:10,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1680695152, now seen corresponding path program 2 times [2021-10-07 16:13:10,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:10,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135451572] [2021-10-07 16:13:10,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:13:10,109 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:10,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:10,110 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 16:13:10,115 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 16:13:10,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:13:10,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:13:10,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:13:10,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:10,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:13:10,631 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:13:10,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 103 [2021-10-07 16:13:10,640 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 16:13:10,641 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 106 treesize of output 102 [2021-10-07 16:13:16,623 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:13:16,624 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 16:13:23,581 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 16:13:23,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:23,838 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 16:13:23,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:23,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135451572] [2021-10-07 16:13:23,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135451572] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:23,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:23,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 16:13:23,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892133484] [2021-10-07 16:13:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 16:13:23,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:23,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 16:13:23,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:13:23,841 INFO L87 Difference]: Start difference. First operand 1367 states and 4444 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 16:13:26,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:26,161 INFO L93 Difference]: Finished difference Result 1366 states and 4435 transitions. [2021-10-07 16:13:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:13:26,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 16:13:26,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:26,170 INFO L225 Difference]: With dead ends: 1366 [2021-10-07 16:13:26,170 INFO L226 Difference]: Without dead ends: 1366 [2021-10-07 16:13:26,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 368.0ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-07 16:13:26,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2021-10-07 16:13:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 1366. [2021-10-07 16:13:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1174 states have (on average 3.7776831345826234) internal successors, (4435), 1365 states have internal predecessors, (4435), 0 states have call successors, (0), 0 states 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 16:13:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4435 transitions. [2021-10-07 16:13:26,238 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4435 transitions. Word has length 8 [2021-10-07 16:13:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:26,238 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 4435 transitions. [2021-10-07 16:13:26,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states 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 16:13:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4435 transitions. [2021-10-07 16:13:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:13:26,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:26,240 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:26,257 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 16:13:26,453 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 16:13:26,454 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:13:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:26,455 INFO L82 PathProgramCache]: Analyzing trace with hash -125769988, now seen corresponding path program 1 times [2021-10-07 16:13:26,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:26,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368074331] [2021-10-07 16:13:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:26,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:26,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:26,457 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 16:13:26,470 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 16:13:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:26,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:13:26,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:26,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:13:26,954 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:13:26,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:13:27,039 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:13:27,040 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 16:13:27,187 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:13:27,188 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 21 treesize of output 21 [2021-10-07 16:13:27,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-10-07 16:13:30,999 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 16:13:30,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:31,487 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 16:13:31,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:31,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368074331] [2021-10-07 16:13:31,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1368074331] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:13:31,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:13:31,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2021-10-07 16:13:31,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883579899] [2021-10-07 16:13:31,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:13:31,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:31,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:13:31,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:13:31,490 INFO L87 Difference]: Start difference. First operand 1366 states and 4435 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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 16:13:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:43,116 INFO L93 Difference]: Finished difference Result 16667 states and 55642 transitions. [2021-10-07 16:13:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:13:43,123 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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 16:13:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:43,224 INFO L225 Difference]: With dead ends: 16667 [2021-10-07 16:13:43,224 INFO L226 Difference]: Without dead ends: 16667 [2021-10-07 16:13:43,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 11624.6ms TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 16:13:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16667 states. [2021-10-07 16:13:43,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16667 to 1657. [2021-10-07 16:13:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1465 states have (on average 4.096245733788396) internal successors, (6001), 1656 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states 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 16:13:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 6001 transitions. [2021-10-07 16:13:43,543 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 6001 transitions. Word has length 8 [2021-10-07 16:13:43,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:43,544 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 6001 transitions. [2021-10-07 16:13:43,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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 16:13:43,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 6001 transitions. [2021-10-07 16:13:43,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:13:43,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:43,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:43,564 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 16:13:43,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:13:43,765 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:13:43,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:43,766 INFO L82 PathProgramCache]: Analyzing trace with hash -125769987, now seen corresponding path program 1 times [2021-10-07 16:13:43,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:43,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419808876] [2021-10-07 16:13:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:43,767 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:43,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:43,769 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:13:43,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:13:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:43,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:13:43,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:44,018 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:13:44,019 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 16:13:44,071 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 16:13:44,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-10-07 16:13:44,164 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 16:13:44,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:48,924 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 16:13:48,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:48,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419808876] [2021-10-07 16:13:48,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419808876] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:48,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:48,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 5 [2021-10-07 16:13:48,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029839883] [2021-10-07 16:13:48,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 16:13:48,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 16:13:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:13:48,926 INFO L87 Difference]: Start difference. First operand 1657 states and 6001 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 16:13:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:49,154 INFO L93 Difference]: Finished difference Result 1189 states and 4181 transitions. [2021-10-07 16:13:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:13:49,155 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 16:13:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:49,159 INFO L225 Difference]: With dead ends: 1189 [2021-10-07 16:13:49,159 INFO L226 Difference]: Without dead ends: 1189 [2021-10-07 16:13:49,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4754.8ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 16:13:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-10-07 16:13:49,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-10-07 16:13:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 1079 states have (on average 3.874884151992586) internal successors, (4181), 1188 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states 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 16:13:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 4181 transitions. [2021-10-07 16:13:49,194 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 4181 transitions. Word has length 8 [2021-10-07 16:13:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:49,195 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 4181 transitions. [2021-10-07 16:13:49,195 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 16:13:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 4181 transitions. [2021-10-07 16:13:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:13:49,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:49,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:49,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:13:49,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:13:49,409 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:13:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:49,410 INFO L82 PathProgramCache]: Analyzing trace with hash -125769937, now seen corresponding path program 1 times [2021-10-07 16:13:49,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:49,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074307834] [2021-10-07 16:13:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:49,411 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:49,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:49,413 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:13:49,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:13:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:49,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:13:49,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:49,568 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 16:13:49,643 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 16:13:49,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:49,665 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 16:13:49,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:49,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074307834] [2021-10-07 16:13:49,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074307834] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:49,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:49,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 16:13:49,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176560322] [2021-10-07 16:13:49,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:13:49,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:49,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:13:49,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:13:49,667 INFO L87 Difference]: Start difference. First operand 1189 states and 4181 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 16:13:49,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:49,880 INFO L93 Difference]: Finished difference Result 821 states and 2777 transitions. [2021-10-07 16:13:49,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 16:13:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 16:13:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:49,882 INFO L225 Difference]: With dead ends: 821 [2021-10-07 16:13:49,883 INFO L226 Difference]: Without dead ends: 821 [2021-10-07 16:13:49,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 16:13:49,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2021-10-07 16:13:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2021-10-07 16:13:49,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 765 states have (on average 3.630065359477124) internal successors, (2777), 820 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states 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 16:13:49,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 2777 transitions. [2021-10-07 16:13:49,904 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 2777 transitions. Word has length 8 [2021-10-07 16:13:49,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:49,904 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 2777 transitions. [2021-10-07 16:13:49,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 16:13:49,905 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 2777 transitions. [2021-10-07 16:13:49,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 16:13:49,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:49,906 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:49,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:13:50,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:13:50,120 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:13:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:50,120 INFO L82 PathProgramCache]: Analyzing trace with hash -125769936, now seen corresponding path program 1 times [2021-10-07 16:13:50,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:50,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602517900] [2021-10-07 16:13:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:50,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:50,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:50,122 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 16:13:50,128 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 16:13:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:50,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:13:50,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:50,385 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 16:13:50,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:50,595 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 16:13:50,675 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 16:13:50,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:50,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602517900] [2021-10-07 16:13:50,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602517900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:13:50,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:13:50,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:13:50,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855344799] [2021-10-07 16:13:50,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:13:50,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:50,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:13:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:13:50,678 INFO L87 Difference]: Start difference. First operand 821 states and 2777 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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 16:13:51,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:51,832 INFO L93 Difference]: Finished difference Result 2468 states and 8065 transitions. [2021-10-07 16:13:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:13:51,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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 16:13:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:51,848 INFO L225 Difference]: With dead ends: 2468 [2021-10-07 16:13:51,848 INFO L226 Difference]: Without dead ends: 2468 [2021-10-07 16:13:51,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 480.6ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:13:51,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2021-10-07 16:13:51,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 908. [2021-10-07 16:13:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 852 states have (on average 3.7007042253521125) internal successors, (3153), 907 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states 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 16:13:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 3153 transitions. [2021-10-07 16:13:51,918 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 3153 transitions. Word has length 8 [2021-10-07 16:13:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:51,918 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 3153 transitions. [2021-10-07 16:13:51,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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 16:13:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 3153 transitions. [2021-10-07 16:13:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:13:51,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:51,922 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:51,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-07 16:13:52,134 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 16:13:52,135 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:13:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:52,135 INFO L82 PathProgramCache]: Analyzing trace with hash 396327535, now seen corresponding path program 1 times [2021-10-07 16:13:52,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:52,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259585870] [2021-10-07 16:13:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:52,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:52,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:52,137 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 16:13:52,139 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 16:13:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:52,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:13:52,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:52,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:13:52,672 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 16:13:52,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:13:52,679 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 16:13:53,093 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-10-07 16:13:53,094 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 64 [2021-10-07 16:13:54,032 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 16:13:54,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:54,410 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 16:13:54,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:54,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259585870] [2021-10-07 16:13:54,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259585870] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:13:54,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:13:54,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 16:13:54,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389444501] [2021-10-07 16:13:54,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:13:54,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:13:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:13:54,412 INFO L87 Difference]: Start difference. First operand 908 states and 3153 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 16:13:58,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:13:58,570 INFO L93 Difference]: Finished difference Result 3693 states and 12710 transitions. [2021-10-07 16:13:58,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:13:58,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 16:13:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:13:58,583 INFO L225 Difference]: With dead ends: 3693 [2021-10-07 16:13:58,583 INFO L226 Difference]: Without dead ends: 3693 [2021-10-07 16:13:58,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1918.3ms TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:13:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2021-10-07 16:13:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 948. [2021-10-07 16:13:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 895 states have (on average 3.7106145251396647) internal successors, (3321), 947 states have internal predecessors, (3321), 0 states have call successors, (0), 0 states 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 16:13:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 3321 transitions. [2021-10-07 16:13:58,640 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 3321 transitions. Word has length 9 [2021-10-07 16:13:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:13:58,640 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 3321 transitions. [2021-10-07 16:13:58,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 16:13:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 3321 transitions. [2021-10-07 16:13:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 16:13:58,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:13:58,641 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:13:58,660 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 16:13:58,855 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 16:13:58,856 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:13:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:13:58,856 INFO L82 PathProgramCache]: Analyzing trace with hash 396327536, now seen corresponding path program 1 times [2021-10-07 16:13:58,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:13:58,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437515634] [2021-10-07 16:13:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:13:58,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:13:58,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:13:58,859 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 16:13:58,860 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 16:13:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:13:59,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 16:13:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:13:59,142 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:13:59,142 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 37 treesize of output 49 [2021-10-07 16:13:59,363 INFO L354 Elim1Store]: treesize reduction 92, result has 26.4 percent of original size [2021-10-07 16:13:59,364 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 52 treesize of output 75 [2021-10-07 16:13:59,832 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 16:13:59,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:13:59,881 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 16:13:59,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:13:59,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437515634] [2021-10-07 16:13:59,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437515634] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:13:59,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:13:59,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:13:59,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254861153] [2021-10-07 16:13:59,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:13:59,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:13:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:13:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:13:59,885 INFO L87 Difference]: Start difference. First operand 948 states and 3321 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 16:14:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:00,050 INFO L93 Difference]: Finished difference Result 889 states and 3089 transitions. [2021-10-07 16:14:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:14:00,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 16:14:00,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:00,054 INFO L225 Difference]: With dead ends: 889 [2021-10-07 16:14:00,054 INFO L226 Difference]: Without dead ends: 889 [2021-10-07 16:14:00,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:14:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-10-07 16:14:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 889. [2021-10-07 16:14:00,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 848 states have (on average 3.642688679245283) internal successors, (3089), 888 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states 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 16:14:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 3089 transitions. [2021-10-07 16:14:00,080 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 3089 transitions. Word has length 9 [2021-10-07 16:14:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:00,080 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 3089 transitions. [2021-10-07 16:14:00,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 16:14:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 3089 transitions. [2021-10-07 16:14:00,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:14:00,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:00,081 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:00,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-07 16:14:00,294 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 16:14:00,295 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:00,295 INFO L82 PathProgramCache]: Analyzing trace with hash -240318133, now seen corresponding path program 2 times [2021-10-07 16:14:00,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:00,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666553064] [2021-10-07 16:14:00,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:14:00,297 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:00,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:00,298 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 16:14:00,299 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 16:14:00,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:14:00,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:14:00,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:14:00,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:00,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:14:00,825 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-07 16:14:00,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 45 treesize of output 91 [2021-10-07 16:14:00,834 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 93 treesize of output 91 [2021-10-07 16:14:04,973 INFO L354 Elim1Store]: treesize reduction 84, result has 36.8 percent of original size [2021-10-07 16:14:04,973 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 16:14:19,256 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 16:14:19,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:19,591 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 16:14:19,591 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:19,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666553064] [2021-10-07 16:14:19,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666553064] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:14:19,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:14:19,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:14:19,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28943188] [2021-10-07 16:14:19,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:14:19,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:14:19,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:14:19,594 INFO L87 Difference]: Start difference. First operand 889 states and 3089 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 16:14:27,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:27,227 INFO L93 Difference]: Finished difference Result 882 states and 3066 transitions. [2021-10-07 16:14:27,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:14:27,229 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 16:14:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:27,234 INFO L225 Difference]: With dead ends: 882 [2021-10-07 16:14:27,234 INFO L226 Difference]: Without dead ends: 882 [2021-10-07 16:14:27,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 514.1ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:14:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-10-07 16:14:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 877. [2021-10-07 16:14:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 839 states have (on average 3.642431466030989) internal successors, (3056), 876 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states 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 16:14:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 3056 transitions. [2021-10-07 16:14:27,261 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 3056 transitions. Word has length 10 [2021-10-07 16:14:27,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:27,261 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 3056 transitions. [2021-10-07 16:14:27,261 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 16:14:27,261 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 3056 transitions. [2021-10-07 16:14:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:14:27,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:27,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:27,277 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 16:14:27,476 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 16:14:27,477 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:27,478 INFO L82 PathProgramCache]: Analyzing trace with hash -605851570, now seen corresponding path program 1 times [2021-10-07 16:14:27,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:27,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137452375] [2021-10-07 16:14:27,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:14:27,479 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:27,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:27,481 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 16:14:27,482 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 16:14:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:14:27,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:14:27,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:27,901 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 16:14:27,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:28,070 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 16:14:28,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:28,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137452375] [2021-10-07 16:14:28,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137452375] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:14:28,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:14:28,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:14:28,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561702359] [2021-10-07 16:14:28,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:14:28,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:28,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:14:28,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:14:28,073 INFO L87 Difference]: Start difference. First operand 877 states and 3056 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:28,923 INFO L93 Difference]: Finished difference Result 1528 states and 5127 transitions. [2021-10-07 16:14:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:14:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 16:14:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:28,928 INFO L225 Difference]: With dead ends: 1528 [2021-10-07 16:14:28,928 INFO L226 Difference]: Without dead ends: 1528 [2021-10-07 16:14:28,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 370.0ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:14:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-10-07 16:14:28,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1308. [2021-10-07 16:14:28,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1270 states have (on average 3.600787401574803) internal successors, (4573), 1307 states have internal predecessors, (4573), 0 states have call successors, (0), 0 states 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 16:14:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 4573 transitions. [2021-10-07 16:14:28,968 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 4573 transitions. Word has length 10 [2021-10-07 16:14:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:28,969 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 4573 transitions. [2021-10-07 16:14:28,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 4573 transitions. [2021-10-07 16:14:28,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:14:28,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:28,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:28,983 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 16:14:29,183 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 16:14:29,184 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:29,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:29,185 INFO L82 PathProgramCache]: Analyzing trace with hash -598753923, now seen corresponding path program 1 times [2021-10-07 16:14:29,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:29,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295920249] [2021-10-07 16:14:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:14:29,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:29,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:29,187 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 16:14:29,191 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 16:14:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:14:29,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 16:14:29,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:29,538 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 16:14:29,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:29,795 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 16:14:29,913 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 16:14:29,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:29,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295920249] [2021-10-07 16:14:29,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295920249] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:14:29,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:14:29,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:14:29,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800190111] [2021-10-07 16:14:29,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:14:29,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:29,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:14:29,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:14:29,916 INFO L87 Difference]: Start difference. First operand 1308 states and 4573 transitions. Second operand has 10 states, 9 states have (on average 2.0) 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 16:14:31,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:31,189 INFO L93 Difference]: Finished difference Result 2496 states and 8447 transitions. [2021-10-07 16:14:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:14:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) 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 10 [2021-10-07 16:14:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:31,201 INFO L225 Difference]: With dead ends: 2496 [2021-10-07 16:14:31,202 INFO L226 Difference]: Without dead ends: 2496 [2021-10-07 16:14:31,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 607.8ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:14:31,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-10-07 16:14:31,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1510. [2021-10-07 16:14:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1472 states have (on average 3.8777173913043477) internal successors, (5708), 1509 states have internal predecessors, (5708), 0 states have call successors, (0), 0 states 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 16:14:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 5708 transitions. [2021-10-07 16:14:31,261 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 5708 transitions. Word has length 10 [2021-10-07 16:14:31,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:31,264 INFO L470 AbstractCegarLoop]: Abstraction has 1510 states and 5708 transitions. [2021-10-07 16:14:31,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) 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 16:14:31,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 5708 transitions. [2021-10-07 16:14:31,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 16:14:31,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:31,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:31,284 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 16:14:31,478 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 16:14:31,478 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:31,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:31,480 INFO L82 PathProgramCache]: Analyzing trace with hash -598753982, now seen corresponding path program 1 times [2021-10-07 16:14:31,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:31,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356296287] [2021-10-07 16:14:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:14:31,482 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:31,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:31,483 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 16:14:31,522 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 16:14:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:14:31,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:14:31,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:31,919 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 16:14:31,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:32,171 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 16:14:32,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:32,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356296287] [2021-10-07 16:14:32,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356296287] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:14:32,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:14:32,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:14:32,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043617092] [2021-10-07 16:14:32,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:14:32,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:32,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:14:32,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:14:32,173 INFO L87 Difference]: Start difference. First operand 1510 states and 5708 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:33,281 INFO L93 Difference]: Finished difference Result 1340 states and 4716 transitions. [2021-10-07 16:14:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:14:33,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 16:14:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:33,286 INFO L225 Difference]: With dead ends: 1340 [2021-10-07 16:14:33,286 INFO L226 Difference]: Without dead ends: 1340 [2021-10-07 16:14:33,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 446.0ms TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:14:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2021-10-07 16:14:33,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1294. [2021-10-07 16:14:33,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1256 states have (on average 3.694267515923567) internal successors, (4640), 1293 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states 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 16:14:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 4640 transitions. [2021-10-07 16:14:33,314 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 4640 transitions. Word has length 10 [2021-10-07 16:14:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:33,315 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 4640 transitions. [2021-10-07 16:14:33,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:14:33,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 4640 transitions. [2021-10-07 16:14:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 16:14:33,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:33,316 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:33,328 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 16:14:33,523 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 16:14:33,524 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:33,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:33,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1140065660, now seen corresponding path program 2 times [2021-10-07 16:14:33,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:33,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685871749] [2021-10-07 16:14:33,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:14:33,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:33,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:33,528 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 16:14:33,545 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 16:14:33,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:14:33,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:14:33,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:14:33,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:33,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:14:34,035 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:14:34,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:14:34,121 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:14:34,121 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 16:14:34,310 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:14:34,311 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 16:14:34,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-10-07 16:14:38,616 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 16:14:38,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:39,248 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 16:14:39,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:39,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685871749] [2021-10-07 16:14:39,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685871749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:14:39,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:14:39,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-07 16:14:39,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865836701] [2021-10-07 16:14:39,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:14:39,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:14:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:14:39,251 INFO L87 Difference]: Start difference. First operand 1294 states and 4640 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) 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 16:14:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:40,247 INFO L93 Difference]: Finished difference Result 1370 states and 4635 transitions. [2021-10-07 16:14:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:14:40,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) 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 11 [2021-10-07 16:14:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:40,252 INFO L225 Difference]: With dead ends: 1370 [2021-10-07 16:14:40,252 INFO L226 Difference]: Without dead ends: 1370 [2021-10-07 16:14:40,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 4740.5ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:14:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-10-07 16:14:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1037. [2021-10-07 16:14:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 999 states have (on average 3.4664664664664664) internal successors, (3463), 1036 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states 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 16:14:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 3463 transitions. [2021-10-07 16:14:40,286 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 3463 transitions. Word has length 11 [2021-10-07 16:14:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:40,288 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 3463 transitions. [2021-10-07 16:14:40,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) 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 16:14:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 3463 transitions. [2021-10-07 16:14:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:14:40,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:40,290 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:40,305 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 16:14:40,503 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 16:14:40,503 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:40,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1514730544, now seen corresponding path program 2 times [2021-10-07 16:14:40,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:40,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189575316] [2021-10-07 16:14:40,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:14:40,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:40,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:40,506 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 16:14:40,543 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 16:14:40,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:14:40,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:14:40,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:14:40,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:41,100 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:14:41,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-07 16:14:41,188 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:14:41,189 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 16:14:41,555 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-07 16:14:41,556 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 21 treesize of output 25 [2021-10-07 16:14:41,590 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:14:41,591 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 16:14:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:14:43,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:14:44,993 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:44,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189575316] [2021-10-07 16:14:44,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189575316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:14:44,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:14:44,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2021-10-07 16:14:44,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521160676] [2021-10-07 16:14:44,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:14:44,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:44,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:14:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:14:44,995 INFO L87 Difference]: Start difference. First operand 1037 states and 3463 transitions. Second operand has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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 16:14:52,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:52,909 INFO L93 Difference]: Finished difference Result 1896 states and 6239 transitions. [2021-10-07 16:14:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:14:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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 12 [2021-10-07 16:14:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:52,917 INFO L225 Difference]: With dead ends: 1896 [2021-10-07 16:14:52,917 INFO L226 Difference]: Without dead ends: 1896 [2021-10-07 16:14:52,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 8411.3ms TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:14:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2021-10-07 16:14:52,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1241. [2021-10-07 16:14:52,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1203 states have (on average 3.6550290939318373) internal successors, (4397), 1240 states have internal predecessors, (4397), 0 states have call successors, (0), 0 states 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 16:14:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4397 transitions. [2021-10-07 16:14:52,955 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4397 transitions. Word has length 12 [2021-10-07 16:14:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:52,955 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 4397 transitions. [2021-10-07 16:14:52,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 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 16:14:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4397 transitions. [2021-10-07 16:14:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:14:52,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:52,956 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:52,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-07 16:14:53,170 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 16:14:53,170 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:53,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:53,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1514730596, now seen corresponding path program 1 times [2021-10-07 16:14:53,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:53,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450842390] [2021-10-07 16:14:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:14:53,173 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:53,173 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 16:14:53,174 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 16:14:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:14:53,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 16:14:53,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:14:53,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:14:54,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-10-07 16:14:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:14:54,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:14:54,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450842390] [2021-10-07 16:14:54,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450842390] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:14:54,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:14:54,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:14:54,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037745355] [2021-10-07 16:14:54,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:14:54,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:14:54,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:14:54,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:14:54,380 INFO L87 Difference]: Start difference. First operand 1241 states and 4397 transitions. Second operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 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 16:14:57,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:14:57,306 INFO L93 Difference]: Finished difference Result 4137 states and 14276 transitions. [2021-10-07 16:14:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:14:57,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 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 16:14:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:14:57,320 INFO L225 Difference]: With dead ends: 4137 [2021-10-07 16:14:57,320 INFO L226 Difference]: Without dead ends: 4137 [2021-10-07 16:14:57,320 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1450.0ms TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:14:57,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2021-10-07 16:14:57,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 1241. [2021-10-07 16:14:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1203 states have (on average 3.57024106400665) internal successors, (4295), 1240 states have internal predecessors, (4295), 0 states have call successors, (0), 0 states 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 16:14:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4295 transitions. [2021-10-07 16:14:57,381 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4295 transitions. Word has length 12 [2021-10-07 16:14:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:14:57,381 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 4295 transitions. [2021-10-07 16:14:57,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 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 16:14:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4295 transitions. [2021-10-07 16:14:57,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:14:57,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:14:57,383 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:14:57,397 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 16:14:57,596 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 16:14:57,597 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:14:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:14:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1521828132, now seen corresponding path program 2 times [2021-10-07 16:14:57,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:14:57,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879747035] [2021-10-07 16:14:57,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:14:57,599 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:14:57,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:14:57,601 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 16:14:57,602 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 16:14:57,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:14:57,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:14:57,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:14:57,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:14:57,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:14:58,129 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:14:58,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:14:58,219 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:14:58,220 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 16:14:58,352 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:14:58,353 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 15 treesize of output 15 [2021-10-07 16:14:58,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-10-07 16:15:00,713 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 16:15:00,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:15:01,231 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 16:15:01,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:15:01,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879747035] [2021-10-07 16:15:01,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879747035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:15:01,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:15:01,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-07 16:15:01,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301675008] [2021-10-07 16:15:01,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:15:01,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:15:01,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:15:01,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:15:01,234 INFO L87 Difference]: Start difference. First operand 1241 states and 4295 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:15:02,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:15:02,399 INFO L93 Difference]: Finished difference Result 1525 states and 4979 transitions. [2021-10-07 16:15:02,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:15:02,400 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:15:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:15:02,404 INFO L225 Difference]: With dead ends: 1525 [2021-10-07 16:15:02,404 INFO L226 Difference]: Without dead ends: 1525 [2021-10-07 16:15:02,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2708.6ms TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:15:02,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1525 states. [2021-10-07 16:15:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1525 to 1241. [2021-10-07 16:15:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1203 states have (on average 3.457190357439734) internal successors, (4159), 1240 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states 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 16:15:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 4159 transitions. [2021-10-07 16:15:02,428 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 4159 transitions. Word has length 12 [2021-10-07 16:15:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:15:02,428 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 4159 transitions. [2021-10-07 16:15:02,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:15:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 4159 transitions. [2021-10-07 16:15:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:15:02,429 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:15:02,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:15:02,440 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 16:15:02,630 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 16:15:02,631 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:15:02,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:15:02,632 INFO L82 PathProgramCache]: Analyzing trace with hash 129103578, now seen corresponding path program 1 times [2021-10-07 16:15:02,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:15:02,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409519015] [2021-10-07 16:15:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:15:02,633 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:15:02,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:15:02,634 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 16:15:02,636 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 16:15:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:15:02,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:15:02,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:15:03,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:15:03,304 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:15:03,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:15:03,398 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:15:03,399 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 16:15:03,580 INFO L354 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2021-10-07 16:15:03,580 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 16:15:03,607 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:15:03,607 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 17 treesize of output 17 [2021-10-07 16:15:06,736 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 16:15:06,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:15:09,024 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 16:15:09,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:15:09,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409519015] [2021-10-07 16:15:09,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409519015] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:15:09,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:15:09,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:15:09,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121740509] [2021-10-07 16:15:09,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:15:09,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:15:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:15:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:15:09,026 INFO L87 Difference]: Start difference. First operand 1241 states and 4159 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:15:48,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:15:48,037 INFO L93 Difference]: Finished difference Result 5020 states and 17475 transitions. [2021-10-07 16:15:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-07 16:15:48,043 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:15:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:15:48,060 INFO L225 Difference]: With dead ends: 5020 [2021-10-07 16:15:48,060 INFO L226 Difference]: Without dead ends: 5020 [2021-10-07 16:15:48,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 31417.2ms TimeCoverageRelationStatistics Valid=245, Invalid=685, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:15:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2021-10-07 16:15:48,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 1809. [2021-10-07 16:15:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1771 states have (on average 3.608695652173913) internal successors, (6391), 1808 states have internal predecessors, (6391), 0 states have call successors, (0), 0 states 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 16:15:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 6391 transitions. [2021-10-07 16:15:48,118 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 6391 transitions. Word has length 12 [2021-10-07 16:15:48,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:15:48,119 INFO L470 AbstractCegarLoop]: Abstraction has 1809 states and 6391 transitions. [2021-10-07 16:15:48,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:15:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 6391 transitions. [2021-10-07 16:15:48,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 16:15:48,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:15:48,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:15:48,131 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 16:15:48,322 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 16:15:48,322 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:15:48,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:15:48,323 INFO L82 PathProgramCache]: Analyzing trace with hash 129103690, now seen corresponding path program 1 times [2021-10-07 16:15:48,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:15:48,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011478396] [2021-10-07 16:15:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:15:48,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:15:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:15:48,326 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 16:15:48,333 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 16:15:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:15:48,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:15:48,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:15:48,726 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 16:15:49,120 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 16:15:49,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:15:54,464 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 16:15:54,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:15:54,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011478396] [2021-10-07 16:15:54,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011478396] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:15:54,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:15:54,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 16:15:54,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726289505] [2021-10-07 16:15:54,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:15:54,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:15:54,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:15:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=100, Unknown=2, NotChecked=0, Total=132 [2021-10-07 16:15:54,465 INFO L87 Difference]: Start difference. First operand 1809 states and 6391 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:16:29,938 WARN L207 SmtUtils]: Spent 32.66 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-10-07 16:16:44,514 WARN L207 SmtUtils]: Spent 8.17 s on a formula simplification that was a NOOP. DAG size: 32 [2021-10-07 16:17:26,564 WARN L207 SmtUtils]: Spent 32.87 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-10-07 16:17:53,525 WARN L207 SmtUtils]: Spent 12.36 s on a formula simplification that was a NOOP. DAG size: 43 [2021-10-07 16:18:47,082 WARN L207 SmtUtils]: Spent 33.20 s on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2021-10-07 16:19:26,026 WARN L207 SmtUtils]: Spent 12.46 s on a formula simplification that was a NOOP. DAG size: 49 [2021-10-07 16:20:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:20:47,986 INFO L93 Difference]: Finished difference Result 4331 states and 15058 transitions. [2021-10-07 16:20:48,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:20:48,028 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 16:20:48,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:20:48,040 INFO L225 Difference]: With dead ends: 4331 [2021-10-07 16:20:48,040 INFO L226 Difference]: Without dead ends: 4331 [2021-10-07 16:20:48,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 167918.7ms TimeCoverageRelationStatistics Valid=177, Invalid=460, Unknown=13, NotChecked=0, Total=650 [2021-10-07 16:20:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2021-10-07 16:20:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 1983. [2021-10-07 16:20:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1945 states have (on average 3.6740359897172237) internal successors, (7146), 1982 states have internal predecessors, (7146), 0 states have call successors, (0), 0 states 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 16:20:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 7146 transitions. [2021-10-07 16:20:48,113 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 7146 transitions. Word has length 12 [2021-10-07 16:20:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:20:48,113 INFO L470 AbstractCegarLoop]: Abstraction has 1983 states and 7146 transitions. [2021-10-07 16:20:48,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:20:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 7146 transitions. [2021-10-07 16:20:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:20:48,114 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:20:48,115 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:20:48,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 16:20:48,321 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 16:20:48,321 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:20:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:20:48,322 INFO L82 PathProgramCache]: Analyzing trace with hash 888742477, now seen corresponding path program 2 times [2021-10-07 16:20:48,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:20:48,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303097403] [2021-10-07 16:20:48,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:20:48,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:20:48,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:20:48,325 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 16:20:48,327 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 16:20:48,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:20:48,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:20:48,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:20:48,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:20:48,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:20:49,001 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-07 16:20:49,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:20:49,008 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 16:20:49,934 INFO L354 Elim1Store]: treesize reduction 100, result has 24.8 percent of original size [2021-10-07 16:20:49,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 43 treesize of output 66 [2021-10-07 16:21:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 16:21:05,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 16:21:05,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:05,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303097403] [2021-10-07 16:21:05,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303097403] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:21:05,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:21:05,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 16:21:05,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415962332] [2021-10-07 16:21:05,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 16:21:05,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 16:21:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:21:05,568 INFO L87 Difference]: Start difference. First operand 1983 states and 7146 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 16:21:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:06,797 INFO L93 Difference]: Finished difference Result 1920 states and 6941 transitions. [2021-10-07 16:21:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:21:06,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 13 [2021-10-07 16:21:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:06,804 INFO L225 Difference]: With dead ends: 1920 [2021-10-07 16:21:06,804 INFO L226 Difference]: Without dead ends: 1920 [2021-10-07 16:21:06,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 519.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:21:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2021-10-07 16:21:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1919. [2021-10-07 16:21:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1890 states have (on average 3.671957671957672) internal successors, (6940), 1918 states have internal predecessors, (6940), 0 states have call successors, (0), 0 states 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 16:21:06,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 6940 transitions. [2021-10-07 16:21:06,836 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 6940 transitions. Word has length 13 [2021-10-07 16:21:06,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:06,836 INFO L470 AbstractCegarLoop]: Abstraction has 1919 states and 6940 transitions. [2021-10-07 16:21:06,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 16:21:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 6940 transitions. [2021-10-07 16:21:06,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:21:06,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:06,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:06,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 16:21:07,040 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 16:21:07,040 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:21:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:07,041 INFO L82 PathProgramCache]: Analyzing trace with hash -292749984, now seen corresponding path program 1 times [2021-10-07 16:21:07,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:07,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572672117] [2021-10-07 16:21:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:21:07,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:07,046 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 16:21:07,051 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 16:21:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:21:07,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:21:07,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:07,763 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 16:21:07,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:08,292 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 16:21:08,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:08,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572672117] [2021-10-07 16:21:08,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572672117] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:08,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:08,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 16:21:08,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409179710] [2021-10-07 16:21:08,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 16:21:08,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 16:21:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:21:08,294 INFO L87 Difference]: Start difference. First operand 1919 states and 6940 transitions. Second operand has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 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 16:21:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:09,993 INFO L93 Difference]: Finished difference Result 1935 states and 6791 transitions. [2021-10-07 16:21:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 16:21:09,995 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 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 16:21:09,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:10,000 INFO L225 Difference]: With dead ends: 1935 [2021-10-07 16:21:10,001 INFO L226 Difference]: Without dead ends: 1935 [2021-10-07 16:21:10,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 977.2ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:21:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2021-10-07 16:21:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1804. [2021-10-07 16:21:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1775 states have (on average 3.643943661971831) internal successors, (6468), 1803 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states 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 16:21:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 6468 transitions. [2021-10-07 16:21:10,052 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 6468 transitions. Word has length 13 [2021-10-07 16:21:10,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:10,053 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 6468 transitions. [2021-10-07 16:21:10,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.0) internal successors, (26), 13 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 16:21:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 6468 transitions. [2021-10-07 16:21:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:21:10,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:10,054 INFO L512 BasicCegarLoop]: trace histogram [9, 2, 1, 1, 1] [2021-10-07 16:21:10,065 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 16:21:10,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:21:10,255 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:21:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:10,256 INFO L82 PathProgramCache]: Analyzing trace with hash 253704, now seen corresponding path program 1 times [2021-10-07 16:21:10,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:10,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553342216] [2021-10-07 16:21:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:21:10,257 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:10,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:10,258 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:21:10,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 16:21:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:21:10,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 16:21:10,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:10,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-10-07 16:21:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:21:11,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:15,824 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:15,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553342216] [2021-10-07 16:21:15,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553342216] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:15,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:15,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2021-10-07 16:21:15,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556002456] [2021-10-07 16:21:15,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-07 16:21:15,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-07 16:21:15,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:21:15,826 INFO L87 Difference]: Start difference. First operand 1804 states and 6468 transitions. Second operand has 26 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 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 16:21:43,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:21:43,322 INFO L93 Difference]: Finished difference Result 16876 states and 63486 transitions. [2021-10-07 16:21:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 16:21:43,325 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 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 16:21:43,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:21:43,384 INFO L225 Difference]: With dead ends: 16876 [2021-10-07 16:21:43,385 INFO L226 Difference]: Without dead ends: 16876 [2021-10-07 16:21:43,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 8313.2ms TimeCoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2021-10-07 16:21:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16876 states. [2021-10-07 16:21:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16876 to 1811. [2021-10-07 16:21:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1782 states have (on average 3.6358024691358026) internal successors, (6479), 1810 states have internal predecessors, (6479), 0 states have call successors, (0), 0 states 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 16:21:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6479 transitions. [2021-10-07 16:21:43,595 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6479 transitions. Word has length 14 [2021-10-07 16:21:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:21:43,596 INFO L470 AbstractCegarLoop]: Abstraction has 1811 states and 6479 transitions. [2021-10-07 16:21:43,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 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 16:21:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6479 transitions. [2021-10-07 16:21:43,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:21:43,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:21:43,597 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 16:21:43,609 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 16:21:43,803 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 16:21:43,803 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:21:43,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:21:43,804 INFO L82 PathProgramCache]: Analyzing trace with hash -337837950, now seen corresponding path program 3 times [2021-10-07 16:21:43,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:21:43,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267514582] [2021-10-07 16:21:43,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:21:43,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:21:43,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:21:43,807 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 16:21:43,808 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 16:21:44,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:21:44,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:21:44,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-07 16:21:44,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:21:44,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:21:44,780 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:21:44,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:21:44,909 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:21:44,910 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 16:21:45,217 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:21:45,218 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 23 [2021-10-07 16:21:45,264 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:21:45,265 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 16:21:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:21:46,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:21:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:21:49,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:21:49,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267514582] [2021-10-07 16:21:49,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267514582] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:21:49,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:21:49,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2021-10-07 16:21:49,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291689986] [2021-10-07 16:21:49,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:21:49,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:21:49,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:21:49,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:21:49,723 INFO L87 Difference]: Start difference. First operand 1811 states and 6479 transitions. Second operand has 19 states, 18 states have (on average 1.5) internal successors, (27), 19 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 16:22:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:18,979 INFO L93 Difference]: Finished difference Result 4550 states and 17009 transitions. [2021-10-07 16:22:18,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-07 16:22:18,986 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 19 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 16:22:18,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:19,005 INFO L225 Difference]: With dead ends: 4550 [2021-10-07 16:22:19,006 INFO L226 Difference]: Without dead ends: 4550 [2021-10-07 16:22:19,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 21205.1ms TimeCoverageRelationStatistics Valid=419, Invalid=1743, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:22:19,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4550 states. [2021-10-07 16:22:19,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4550 to 3292. [2021-10-07 16:22:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 3263 states have (on average 3.812749003984064) internal successors, (12441), 3291 states have internal predecessors, (12441), 0 states have call successors, (0), 0 states 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 16:22:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 12441 transitions. [2021-10-07 16:22:19,121 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 12441 transitions. Word has length 14 [2021-10-07 16:22:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:19,123 INFO L470 AbstractCegarLoop]: Abstraction has 3292 states and 12441 transitions. [2021-10-07 16:22:19,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.5) internal successors, (27), 19 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 16:22:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 12441 transitions. [2021-10-07 16:22:19,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:22:19,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:19,125 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:19,143 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 16:22:19,340 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 16:22:19,340 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:22:19,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2106934381, now seen corresponding path program 1 times [2021-10-07 16:22:19,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:19,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424618005] [2021-10-07 16:22:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:22:19,342 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:19,343 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 16:22:19,361 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 16:22:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:22:19,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:22:19,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:19,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:22:20,235 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:22:20,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:22:20,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-07 16:22:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:22:20,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 16:22:21,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:21,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424618005] [2021-10-07 16:22:21,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424618005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:21,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:21,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-07 16:22:21,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150248151] [2021-10-07 16:22:21,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:22:21,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:21,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:22:21,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:22:21,785 INFO L87 Difference]: Start difference. First operand 3292 states and 12441 transitions. Second operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 16:22:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:22:26,514 INFO L93 Difference]: Finished difference Result 3342 states and 12255 transitions. [2021-10-07 16:22:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-07 16:22:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 14 [2021-10-07 16:22:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:22:26,524 INFO L225 Difference]: With dead ends: 3342 [2021-10-07 16:22:26,524 INFO L226 Difference]: Without dead ends: 3342 [2021-10-07 16:22:26,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2436.1ms TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:22:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2021-10-07 16:22:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 3166. [2021-10-07 16:22:26,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 3137 states have (on average 3.7892891297417917) internal successors, (11887), 3165 states have internal predecessors, (11887), 0 states have call successors, (0), 0 states 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 16:22:26,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 11887 transitions. [2021-10-07 16:22:26,591 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 11887 transitions. Word has length 14 [2021-10-07 16:22:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:22:26,592 INFO L470 AbstractCegarLoop]: Abstraction has 3166 states and 11887 transitions. [2021-10-07 16:22:26,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 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 16:22:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 11887 transitions. [2021-10-07 16:22:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:22:26,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:22:26,594 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:22:26,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-07 16:22:26,808 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 16:22:26,808 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:22:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:22:26,809 INFO L82 PathProgramCache]: Analyzing trace with hash -704948674, now seen corresponding path program 2 times [2021-10-07 16:22:26,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:22:26,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102871852] [2021-10-07 16:22:26,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:22:26,810 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:22:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:22:26,811 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 16:22:26,812 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 16:22:27,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:22:27,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:22:27,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-07 16:22:27,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:22:27,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:22:27,759 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:22:27,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:22:27,894 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:22:27,894 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 16:22:28,257 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:22:28,257 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 21 treesize of output 21 [2021-10-07 16:22:28,308 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:22:28,309 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 15 treesize of output 15 [2021-10-07 16:22:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:29,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:22:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:22:37,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:22:37,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102871852] [2021-10-07 16:22:37,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102871852] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:22:37,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:22:37,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:22:37,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513790782] [2021-10-07 16:22:37,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:22:37,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:22:37,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:22:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:22:37,257 INFO L87 Difference]: Start difference. First operand 3166 states and 11887 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:22:44,287 WARN L207 SmtUtils]: Spent 6.28 s on a formula simplification that was a NOOP. DAG size: 56 [2021-10-07 16:23:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:23:26,369 INFO L93 Difference]: Finished difference Result 7279 states and 27406 transitions. [2021-10-07 16:23:26,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 16:23:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:23:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:23:26,396 INFO L225 Difference]: With dead ends: 7279 [2021-10-07 16:23:26,396 INFO L226 Difference]: Without dead ends: 7279 [2021-10-07 16:23:26,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 24613.9ms TimeCoverageRelationStatistics Valid=392, Invalid=1330, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:23:26,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2021-10-07 16:23:26,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 3828. [2021-10-07 16:23:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3799 states have (on average 3.759673598315346) internal successors, (14283), 3827 states have internal predecessors, (14283), 0 states have call successors, (0), 0 states 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 16:23:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 14283 transitions. [2021-10-07 16:23:26,529 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 14283 transitions. Word has length 15 [2021-10-07 16:23:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:23:26,530 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 14283 transitions. [2021-10-07 16:23:26,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:23:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 14283 transitions. [2021-10-07 16:23:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:23:26,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:23:26,532 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-07 16:23:26,545 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 16:23:26,744 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 16:23:26,745 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:23:26,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:23:26,746 INFO L82 PathProgramCache]: Analyzing trace with hash 437326945, now seen corresponding path program 3 times [2021-10-07 16:23:26,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:23:26,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068575477] [2021-10-07 16:23:26,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:23:26,747 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:23:26,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:23:26,749 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 16:23:26,756 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 16:23:27,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 16:23:27,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:23:27,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:23:27,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:23:27,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:23:27,805 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:23:27,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:23:29,052 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:29,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:23:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:23:36,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:23:36,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068575477] [2021-10-07 16:23:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068575477] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:23:36,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:23:36,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 16:23:36,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380171781] [2021-10-07 16:23:36,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 16:23:36,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:23:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 16:23:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:23:36,245 INFO L87 Difference]: Start difference. First operand 3828 states and 14283 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:23:50,878 WARN L207 SmtUtils]: Spent 9.95 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 16:24:01,966 WARN L207 SmtUtils]: Spent 9.57 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 16:24:12,165 WARN L207 SmtUtils]: Spent 8.55 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 16:24:18,984 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-07 16:25:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:21,964 INFO L93 Difference]: Finished difference Result 22460 states and 86249 transitions. [2021-10-07 16:25:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 16:25:21,966 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:25:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:22,134 INFO L225 Difference]: With dead ends: 22460 [2021-10-07 16:25:22,135 INFO L226 Difference]: Without dead ends: 22460 [2021-10-07 16:25:22,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 67306.3ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 16:25:22,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22460 states. [2021-10-07 16:25:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22460 to 3853. [2021-10-07 16:25:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3853 states, 3824 states have (on average 3.7481694560669454) internal successors, (14333), 3852 states have internal predecessors, (14333), 0 states have call successors, (0), 0 states 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 16:25:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3853 states to 3853 states and 14333 transitions. [2021-10-07 16:25:22,435 INFO L78 Accepts]: Start accepts. Automaton has 3853 states and 14333 transitions. Word has length 16 [2021-10-07 16:25:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:22,435 INFO L470 AbstractCegarLoop]: Abstraction has 3853 states and 14333 transitions. [2021-10-07 16:25:22,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3853 states and 14333 transitions. [2021-10-07 16:25:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:25:22,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:22,437 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:25:22,449 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 16:25:22,637 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 16:25:22,638 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:25:22,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:22,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1945642436, now seen corresponding path program 2 times [2021-10-07 16:25:22,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:22,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995697136] [2021-10-07 16:25:22,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:25:22,640 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:22,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:22,641 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 16:25:22,644 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 16:25:23,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:25:23,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:25:23,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:25:23,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:23,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 16:25:23,562 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:25:23,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 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 16:25:23,695 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:25:23,695 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 16:25:23,989 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:25:23,990 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 15 treesize of output 15 [2021-10-07 16:25:24,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-10-07 16:25:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 16:25:24,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:25:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-07 16:25:29,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:25:29,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995697136] [2021-10-07 16:25:29,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995697136] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:25:29,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:25:29,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-07 16:25:29,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409547001] [2021-10-07 16:25:29,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:25:29,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:25:29,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:25:29,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:25:29,142 INFO L87 Difference]: Start difference. First operand 3853 states and 14333 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:25:30,837 INFO L93 Difference]: Finished difference Result 4325 states and 15701 transitions. [2021-10-07 16:25:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:25:30,839 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:25:30,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:25:30,856 INFO L225 Difference]: With dead ends: 4325 [2021-10-07 16:25:30,856 INFO L226 Difference]: Without dead ends: 4325 [2021-10-07 16:25:30,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1854.9ms TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:25:30,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2021-10-07 16:25:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 2949. [2021-10-07 16:25:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2920 states have (on average 3.7356164383561645) internal successors, (10908), 2948 states have internal predecessors, (10908), 0 states have call successors, (0), 0 states 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 16:25:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 10908 transitions. [2021-10-07 16:25:30,937 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 10908 transitions. Word has length 16 [2021-10-07 16:25:30,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:25:30,938 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 10908 transitions. [2021-10-07 16:25:30,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:25:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 10908 transitions. [2021-10-07 16:25:30,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:25:30,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:25:30,940 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 16:25:30,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 16:25:31,153 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 16:25:31,154 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 41 more)] === [2021-10-07 16:25:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:25:31,155 INFO L82 PathProgramCache]: Analyzing trace with hash -45549164, now seen corresponding path program 2 times [2021-10-07 16:25:31,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:25:31,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284259141] [2021-10-07 16:25:31,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:25:31,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:25:31,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:25:31,157 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 16:25:31,158 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 16:25:31,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:25:31,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:25:31,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:25:31,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:25:32,064 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-07 16:25:32,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 89 [2021-10-07 16:25:32,196 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-07 16:25:32,196 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 16:25:32,379 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 16:25:32,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-10-07 16:25:32,408 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 16:25:32,409 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 17 treesize of output 17 [2021-10-07 16:25:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-07 16:25:32,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2021-10-07 16:25:36,156 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-07 16:25:36,158 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:25:36,163 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 16:25:36,165 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 16:25:36,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-07 16:25:36,361 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 16:25:36,362 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. [2021-10-07 16:25:36,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:25:36,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:25:36,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:25:36,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 16:25:36,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:25:36,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:25:36,365 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:25:36,366 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 16:25:36,367 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:25:36,368 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 16:25:36,369 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-07 16:25:36,370 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-07 16:25:36,370 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err2REQUIRES_VIOLATION [2021-10-07 16:25:36,370 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err3REQUIRES_VIOLATION [2021-10-07 16:25:36,376 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:25:36,376 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:25:36,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:25:36 BasicIcfg [2021-10-07 16:25:36,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:25:36,379 INFO L168 Benchmark]: Toolchain (without parser) took 838271.77 ms. Allocated memory was 175.1 MB in the beginning and 263.2 MB in the end (delta: 88.1 MB). Free memory was 149.7 MB in the beginning and 138.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 100.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:25:36,380 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 175.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:25:36,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.06 ms. Allocated memory is still 175.1 MB. Free memory was 149.3 MB in the beginning and 136.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:25:36,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 175.1 MB. Free memory was 136.3 MB in the beginning and 134.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 16:25:36,381 INFO L168 Benchmark]: Boogie Preprocessor took 42.64 ms. Allocated memory is still 175.1 MB. Free memory was 134.4 MB in the beginning and 132.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:25:36,381 INFO L168 Benchmark]: RCFGBuilder took 926.43 ms. Allocated memory is still 175.1 MB. Free memory was 132.5 MB in the beginning and 146.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2021-10-07 16:25:36,381 INFO L168 Benchmark]: TraceAbstraction took 836884.09 ms. Allocated memory was 175.1 MB in the beginning and 263.2 MB in the end (delta: 88.1 MB). Free memory was 145.8 MB in the beginning and 138.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 95.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:25:36,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 175.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 352.06 ms. Allocated memory is still 175.1 MB. Free memory was 149.3 MB in the beginning and 136.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 51.99 ms. Allocated memory is still 175.1 MB. Free memory was 136.3 MB in the beginning and 134.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.64 ms. Allocated memory is still 175.1 MB. Free memory was 134.4 MB in the beginning and 132.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 926.43 ms. Allocated memory is still 175.1 MB. Free memory was 132.5 MB in the beginning and 146.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 836884.09 ms. Allocated memory was 175.1 MB in the beginning and 263.2 MB in the end (delta: 88.1 MB). Free memory was 145.8 MB in the beginning and 138.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 95.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32149.7ms, 207 PlacesBefore, 66 PlacesAfterwards, 213 TransitionsBefore, 61 TransitionsAfterwards, 3888 CoEnabledTransitionPairs, 8 FixpointIterations, 122 TrivialSequentialCompositions, 65 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 6 ConcurrentYvCompositions, 11 ChoiceCompositions, 222 TotalNumberOfCompositions, 5752 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4926, positive: 4858, positive conditional: 0, positive unconditional: 4858, negative: 68, negative conditional: 0, negative unconditional: 68, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2349, positive: 2330, positive conditional: 0, positive unconditional: 2330, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2349, positive: 2328, positive conditional: 0, positive unconditional: 2328, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1422, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 1404, negative conditional: 0, negative unconditional: 1404, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4926, positive: 2528, positive conditional: 0, positive unconditional: 2528, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 2349, unknown conditional: 0, unknown unconditional: 2349] , Statistics on independence cache: Total cache size (in pairs): 233, Positive cache size: 227, Positive conditional cache size: 0, Positive unconditional cache size: 227, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 83]: 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 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 82]: 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 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - TimeoutResultAtElement [Line: 84]: 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 17 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 1ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 252 locations, 45 error locations. Started 1 CEGAR loops. OverallTime: 836708.5ms, OverallIterations: 35, TraceHistogramMax: 14, EmptinessCheckTime: 49.1ms, AutomataDifference: 638091.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32356.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1241 SDtfs, 14478 SDslu, 8277 SDs, 0 SdLazy, 15391 SolverSat, 1166 SolverUnsat, 86 SolverUnknown, 0 SolverNotchecked, 301654.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 835 GetRequests, 280 SyntacticMatches, 6 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 376397.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3853occurred in iteration=33, InterpolantAutomatonStates: 429, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3412.8ms AutomataMinimizationTime, 34 MinimizatonAttempts, 104431 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 332.8ms SsaConstructionTime, 3117.1ms SatisfiabilityAnalysisTime, 141714.8ms InterpolantComputationTime, 327 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 586 ConstructedInterpolants, 216 QuantifiedInterpolants, 14414 SizeOfPredicates, 356 NumberOfNonLiveVariables, 3073 ConjunctsInSsa, 513 ConjunctsInUnsatCore, 68 InterpolantComputations, 28 PerfectInterpolantSequences, 213/628 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